hw 8 done (Thank You!)

labs/lab6/src/App.tsx

@@ -2,7 +2,7 @@ import NavBar from './components/Navbar'
 import Gallery from "./components/Gallery";
 import Content from "./components/Content";
 import CustomFooter from "./components/CustomFooter";
-
+import Task from "./Task"
 
 import './styles/App.css'
 
@@ -13,6 +13,7 @@ function App() {
       <Gallery/>
       <Content/>
       <CustomFooter/>
+      <Task/>
     </>
   )
 }

labs/lab6/src/Task.tsx

@@ -0,0 +1,38 @@
+import { useState,useEffect } from "react"
+import type {ReactElement} from "react"
+const lines = [
+    "Ночь, улица, фонарь, аптека,",
+    "Бессмыссленный и тусклый свет.",
+    "Живи ещё хоть четверть века - ",
+    "Всё будет так. Исхода нет.",
+    "Умрёшь -  начнёшь опять сначала",
+    "И повториться всё как встарь:",
+    "Ночь, ледяная рябь канала",
+    "Аптека, Улица, фонарь."
+];
+
+interface ComponentProps {
+    Inputinterval: number
+}
+
+
+const Task = ({Inputinterval}:ComponentProps): ReactElement =>{
+    const [interval, updateInterval] = useState<number>(Inputinterval);
+    const [lineIdx, updateLineIdx] = useState<number>(0);
+    const updateLine = ():void =>{
+        updateLineIdx((lineIdx+1)%lines.length);
+    }
+    useEffect(()=>{
+        const intervalId = setInterval(updateLine,Number(interval));
+        return ()=>{ clearInterval(intervalId)}
+    })
+    return(
+        <>
+        <input type="number" value={interval} onChange={(event)=>{updateInterval(Number(event.target.value))}}></input>
+        <div className="blackDiv">
+            <h2 className="bigWhite">{lines[lineIdx]}</h2>
+        </div>
+        </>
+    )
+}
+export default Task;

labs/lab6/src/components/BuildCard.tsx

@@ -24,8 +24,10 @@ interface ComponentProps {
 
 
 function BuildCard({ building,cardNum} : ComponentProps) {
+    const reverseModifier = cardNum % 2 == 0 ? "-reverse" : "";
+
     return (
-      <Card  style={cardNum%2==0?{'flexDirection':'row-reverse'}:{}}sx={{  display: 'flex' }} >
+      <Card sx={{  display: 'flex', flexDirection:{xs:"column", sm:"row"+reverseModifier} }} >
         <CardMedia
             component="img"
             alt={ building.title }

site/src/chart/components/GroupChart.tsx

@@ -10,21 +10,43 @@ type GroupProps = {
 };
 
 
+
+
 function GroupChart({ data }: GroupProps) {
     const [isBar, setIsBar] = useState(true);
+    const [doStack, setDoStack] = useState(false);
     const [series, setSeries] = useState({
-        'max': true,
-        'mean': false,
         'min': false,
+        'mean': false,
+        'max': true,
     });
+
+    const deltas = data.map((val) => {
+        const out = { ...val };
+        const deltaMinMean = (val["mean"] - (Number(series["min"])?val["min"]:0));
+        const deltaMeanMax = (val["max"] - (Number(series["mean"])?val["mean"]:(series["min"]?val["min"]:0)));
+        out["mean"] = deltaMinMean;
+        out["max"] = deltaMeanMax;
+        return out;
+    })
+    const formatLabel =  (key:string)=>(value:number,didx:{dataIndex:number}):number => {
+        const idx= didx["dataIndex"]
+        return String(data[idx][key]);
+    }
+
     const selectedSeries = Object.entries(series).filter(item => item[1] === true);
+
     let seriesY = selectedSeries.map(item => {
         return {
             dataKey: item[0],
             label: item[0],
-            barLabel: selectedSeries.length === 1 ? ('value' as const) : undefined,
+            barLabel: (selectedSeries.length === 1) && (data.length < 20) ? ('value' as const) : undefined,
+            stack: doStack && isBar ? 'prices' : undefined,
+            valueFormatter: (doStack && isBar)? formatLabel(item[0]):(v:number)=>String(v) 
         }
     });
+        console.log(seriesY)
+    console.log(doStack)
     const chartSetting = {
         yAxis: [{ label: 'Price ($)' }],
         height: 400,
@@ -33,7 +55,7 @@ function GroupChart({ data }: GroupProps) {
     return (
         <Container maxWidth="lg">
             {isBar && <BarChart
-                dataset={data}
+                dataset={doStack ? deltas : data}
                 xAxis={[{ scaleType: 'band', dataKey: 'group' }]}
                 series={seriesY}
                 slotProps={{
@@ -43,7 +65,7 @@ function GroupChart({ data }: GroupProps) {
                 }}
                 {...chartSetting}
             />}
-            {!isBar &&<LineChart
+            {!isBar && <LineChart
                 dataset={data}
                 xAxis={[{ scaleType: 'band', dataKey: 'group' }]}
                 series={seriesY}
@@ -54,7 +76,7 @@ function GroupChart({ data }: GroupProps) {
                 }}
                 {...chartSetting}
             />}
-            <SettingChart series={series} setSeries={setSeries} isBar={isBar} setIsBar={setIsBar} />
+            <SettingChart series={series} setSeries={setSeries} isBar={isBar} setIsBar={setIsBar} doStack={doStack} setDoStack={setDoStack} />
         </Container>
     )
 };

site/src/chart/components/SettingChart.tsx

@@ -7,6 +7,8 @@ import Stack from '@mui/material/Stack';
 import Divider from '@mui/material/Divider';
 import RadioGroup from '@mui/material/RadioGroup';
 import Radio from '@mui/material/Radio';
+import Switch from '@mui/material/Switch';
+
 
 
 type tSeries = {
@@ -19,9 +21,12 @@ type CheckboxProps = {
   setSeries: React.Dispatch<React.SetStateAction<tSeries>>;
   isBar: boolean;
   setIsBar: React.Dispatch<React.SetStateAction<boolean>>
+  doStack: boolean;
+  setDoStack: React.Dispatch<React.SetStateAction<boolean>>
+
 };
 
-function SettingChart({ series, setSeries, isBar, setIsBar }: CheckboxProps) {
+function SettingChart({ series, setSeries, isBar, setIsBar, doStack, setDoStack }: CheckboxProps) {
   const handleChange = (event: React.ChangeEvent<HTMLInputElement>) => {
     setSeries({
       ...series,
@@ -29,6 +34,10 @@ function SettingChart({ series, setSeries, isBar, setIsBar }: CheckboxProps) {
     });
   };
 
+  const changeDoStack =(event:React.ChangeEvent<HTMLInputElement>)=>{
+    setDoStack(event.target.checked)
+  }
+
   const handleRadioButtonChange = (event: React.ChangeEvent<HTMLInputElement>) => {
     setIsBar(event.target.value === "bar");
   };
@@ -89,6 +98,17 @@ function SettingChart({ series, setSeries, isBar, setIsBar }: CheckboxProps) {
           }
           label="Min price"
         />
+        
+       <FormControlLabel
+          control={
+        <Switch 
+          checked={doStack}
+          onChange={changeDoStack} 
+          
+          />
+          }
+           label="Do Stack"
+        />
       </FormControl>
     </Stack>
   )

site/src/data.tsx

@@ -173,8 +173,8 @@ type GroupedRamPrice =Array<{
     id: number;
     group: string | number;
     min:number;
-    max:number;
     mean:number;
+    max:number;
 }>;
 
 const gropuedPrices = groupBycolumns.map((col) => {
@@ -184,9 +184,10 @@ const gropuedPrices = groupBycolumns.map((col) => {
         out.push({
             id: out.length + 1,
             group: key,
-            min: d3.min(prices) ?? 0,
-            max: d3.max(prices) ?? 0,
             mean: Math.round((d3.mean(prices) ?? 0)*1000)/1000,
+            max: d3.max(prices) ?? 0,
+            min: d3.min(prices) ?? 0,
+
         });
     });
 

site/src/main/components/Gallery.tsx

@@ -15,7 +15,7 @@ function Gallery() {
           sx={{
             columnCount: {
               xs: '1 !important',
-              sm: '3 !important',
+              sm: '1 !important',
               md: '3 !important',
               lg: '3 !important',
             },

site/src/quiz/components/SortableItem.tsx

@@ -30,6 +30,7 @@ export function SortableItem({ item ,isDisabled}: SortableItemProps) {
               sx={{
               border: '1px solid gray',
               borderRadius: '5px',
+              height:"4.4em"
             }}>
             <ListItemIcon>
               <DragIndicatorIcon />

site/src/quiz/features/Choosing.tsx

@@ -0,0 +1,72 @@
+import { Grid, List, ListItem, ListItemButton, ListItemText } from '@mui/material';
+import { useDispatch, useSelector } from 'react-redux';
+import type { tTasks } from "../quizData"
+import { useEffect } from 'react';
+import { addList, mixUp } from './quizSlice';
+import Checkbox from '@mui/material/Checkbox';
+import type { RootState } from '../../store';
+import type { ChangeEvent } from 'react';
+import { setCheckedItems } from './quizSlice';
+
+
+interface ComponentProps {
+  tasks: tTasks;
+  index: number;
+}
+
+function Matching({ tasks, index }: ComponentProps) {
+  const dispatch = useDispatch();
+  const answers: boolean[] = tasks.map((item) => Boolean(item.answer));
+  const items: string[] = tasks.map((item) => String(item.answer));
+  const arr = useSelector((state: RootState) => state.quiz.userAnswers[index]);
+  // const correctAnswers = useSelector((state: RootState) => state.quiz.correctAnswers[index]);
+  const questions = useSelector((state: RootState) => state.quiz.questions[index]);
+  const isDisabled = useSelector((state: RootState) => state.quiz.isTestingDone);
+  useEffect(() => {
+    dispatch(addList({ index, items: items,questions:tasks.map((item) => String(item.question)), answers: answers, quizType: "M" }));
+  }, []);
+
+  useEffect(() => {
+    dispatch(mixUp());
+  }, []);
+
+
+  const handleCheckboxAction = (checkboxIndex: number) => (_: ChangeEvent<HTMLInputElement, Element>, checked: boolean) => {
+    let answersCopy = arr.map((x)=>(Boolean(x)));
+    answersCopy[checkboxIndex] = checked;
+    dispatch(setCheckedItems({ index, items: answersCopy }));
+  };
+  
+  // console.log(arr);
+
+  return (
+    <Grid container spacing={2}>
+      <Grid size={12}>
+        <List>
+          {tasks.map((_, itemIndex) => (
+            <ListItem key={itemIndex}>
+              <ListItemButton
+                sx={{
+                  border: '1px solid gray',
+                  borderRadius: '5px',
+                  textAlign: 'right',
+                }}>
+                <ListItemText primary={arr == undefined ? "loading": questions[itemIndex]} />
+                <Checkbox
+                  onChange={isDisabled ? (..._) => { _ } : handleCheckboxAction(itemIndex)}
+                  checked={Boolean(arr == undefined ? false : arr[itemIndex])}
+                  sx={{ '& .MuiSvgIcon-root': { fontSize: 28 } }}
+                />
+              </ListItemButton>
+            </ListItem>
+          ))}
+        </List>
+      </Grid>
+      <Grid size={12}>
+
+      </Grid>
+    </Grid>
+  );
+}
+
+export default Matching

site/src/quiz/features/Matching.tsx

@@ -1,51 +1,52 @@
 import { Grid, List, ListItem, ListItemButton, ListItemText } from '@mui/material';
-import type {tTasks} from "../quizData"
+import type { tTasks } from "../quizData"
 import SortableList from '../features/SortableList';
 import { useEffect } from 'react';
 import { useDispatch } from 'react-redux';
-import { addList,mixUp } from './quizSlice';
+import { addList, mixUp } from './quizSlice';
 interface ComponentProps {
-    tasks: tTasks;
-    index: number;
-  }
+  tasks: tTasks;
+  index: number;
+}
 
-function Matching({tasks,index}: ComponentProps) {
+function Matching({ tasks, index }: ComponentProps) {
   const dispatch = useDispatch();
-  
+  const answers: string[] = tasks.map((item) => String(item.answer));
   // Добавляем список ответов очередного задания в хранилище
   useEffect(() => {
-     dispatch(addList({ index, items: answers }));
+    dispatch(addList({ index, items: answers, answers:answers, questions:tasks.map((item) => String(item.question)), quizType: "M" }));
   }, []);
 
   useEffect(() => {
-     dispatch(mixUp());
+    dispatch(mixUp());
   }, []);
-  
 
-  const answers: string[] = tasks.map((item) => String(item.answer));
+
+
   return (
     <Grid container spacing={2}>
       <Grid size={6}>
         <List>
           {tasks.map((item, index) => (
-          <ListItem key={index}>
-            <ListItemButton 
-              sx={{
-                border: '1px solid gray',
-                borderRadius: '5px',
-                textAlign: 'right',
-            }}>
-              <ListItemText primary={item.question} />
-           </ListItemButton>
-          </ListItem> 
+            <ListItem key={index}>
+              <ListItemButton
+                sx={{
+                  border: '1px solid gray',
+                  borderRadius: '5px',
+                  textAlign: 'right',
+                  height:"4.4em"
+                }}>
+                <ListItemText primary={item.question} />
+              </ListItemButton>
+            </ListItem>
           ))}
         </List>
       </Grid>
 
-          <Grid size={6}>
-        <SortableList index={index} answers={answers}/>
+      <Grid size={6}>
+        <SortableList index={index} answers={answers} />
       </Grid>
-    </Grid> 
+    </Grid>
   );
 }
 

site/src/quiz/features/Quiz.tsx

@@ -1,35 +1,50 @@
 import { Box, Button, Container, Typography } from '@mui/material';
 import { quiz } from "../quizData";
 import { useSelector } from 'react-redux';
-import {useState } from 'react';
+import { useState } from 'react';
 import Matching from './Matching';
+import Sorting from './Sorting';
+import Choosing from './Choosing';
 import type { RootState } from '../../store';
 import store from '../../store';
 import { useDispatch } from 'react-redux';
 import { mixUp, startTesting, stopTesting } from './quizSlice';
 
 function QuizStats() {
+  let correctAnswers = useSelector((state: RootState) => state.quiz.correctAnswers);
+  const userAnswers = useSelector((state: RootState) => state.quiz.userAnswers);
 
-  const correctCount = (index: number):number => {
-    let quiz = useSelector((state: RootState) => state.quiz);
+  const correctCount = (index: number): number => {
     let state = store.getState();
     if (state.quiz.correctAnswers.length <= index) {
       return 0;
     }
-    return quiz.userAnswers[index].reduce((prev, answ, i) => prev + Number(quiz.correctAnswers[index][i] === answ), 0);
+    return userAnswers[index].reduce((prev, answ, i) => prev + Number(correctAnswers[index][i] === answ), 0);
   }
 
-  const quizPartText = (counter:number, len:number):string=>{
+  const counts = userAnswers.map((_,index)=>correctCount(index));
+  const questionCounts = userAnswers.map((answers)=>answers.length);
+
+  const total= counts.reduce((x,c)=>c+x,0);
+  const totalQuestionCount= questionCounts.reduce((x,c)=>c+x,0);
+
+  const donePercentage = Math.round(total/totalQuestionCount*100*100)/100;
+
+  const quizPartText = (counter: number, len: number, taskIndex:number) => {
     if (counter == len) {
-      return "все ответы верные"
+      return <Typography key={taskIndex}>Task {taskIndex+1}: everethyng is correct</Typography>
     }
-    return `верно ${counter}/${len}`
+    return  <Typography key={taskIndex}>Task {taskIndex+1}: correct {counter}/{len}</Typography>
   }
+
+
   return (
-    <Container sx={{ margin: "auto" }}>
-      <h3>Результаты теста</h3>
-      {/* <Typography>Задание 1: {checkTask(0)}</Typography> */}
-      {/* <Typography>Задание 2: {checkTask(1)}</Typography> */}
+    <Container sx={{ margin: "auto", d:"flex",flexDirection:"column" }}>
+      <h2>Результаты теста</h2>
+      {
+        counts.map((count,idx)=>quizPartText(count,questionCounts[idx],idx))
+      }
+      <h3>Итого {donePercentage}% Верно</h3>
     </Container>
   )
 }
@@ -53,18 +68,27 @@ function Quiz() {
   return (
     <Container maxWidth="md">
       {quiz.map((item, index) => (
-        <Box key={item.id} component="section" sx={{ m: 2, p: 2 }}>
+        <Box key={item.id} component="section" sx={{ m: 2, p: 2}}>
           <Typography variant="h5" gutterBottom>
             {index + 1}. {item.title}
           </Typography>
-          {[<Matching index={index} tasks={item.tasks} />,<>S</>,<>c</>][(["M","S","C"].indexOf(item.type))]}
-        </Box>
-      ))}
+          {[
+
+            <Matching index={index} tasks={item.tasks} key={index}/>, 
+            
+            <Sorting index={index} tasks={item.tasks} key={index}/>,
+            
+            <Choosing index={index} tasks={item.tasks} key={index}/>
+             
+             ][(["M", "S", "C"].indexOf(item.type))]}
+        </Box>
+        
+      ))}
+        <Box sx={{ display: 'flex', justifyContent: 'space-around' }}>
+                <Button onClick={checkQuiz} variant="contained">Check</Button>
+                <Button onClick={resetQuiz} variant="contained">Reset</Button>
+              </Box>
 
-      <Box sx={{ display: 'flex', justifyContent: 'space-around' }}>
-        <Button onClick={checkQuiz} variant="contained">Проверить</Button>
-        <Button onClick={resetQuiz} variant="contained">Начать снова</Button>
-      </Box>
       {displayingResults && <QuizStats />}
 
     </Container>

site/src/quiz/features/SortableList.tsx

@@ -4,8 +4,7 @@ import { useDispatch, useSelector } from 'react-redux';
 import { setDraggedItems } from './quizSlice';
 import type { RootState } from '../../store';
 import List from '@mui/material/List';
-import { SortableItem } from '../components/SortableItem'
-
+import { SortableItem } from '../components/SortableItem';
 interface ComponentProps {
   index: number;
   answers: string[];
@@ -34,7 +33,7 @@ function SortableList({ index}: ComponentProps) {
         strategy={verticalListSortingStrategy}>
         <List>
           {draggedItems.map((item) => (
-            <SortableItem key={String(item)} item={String(item)} id={String(item)} isDisabled={isDisabled}/>
+            <SortableItem key={String(item)} item={String(item)} id={String(item)} isDisabled={isDisabled} />
           ))}
         </List>
       </SortableContext>

site/src/quiz/features/Sorting.tsx

@@ -0,0 +1,35 @@
+import { Grid} from '@mui/material';
+import type { tTasks } from "../quizData"
+import SortableList from '../features/SortableList';
+import { useEffect } from 'react';
+import { useDispatch } from 'react-redux';
+import { addList, mixUp } from './quizSlice';
+interface ComponentProps {
+  tasks: tTasks;
+  index: number;
+}
+
+function Matching({ tasks, index }: ComponentProps) {
+  const dispatch = useDispatch();
+  const answers: string[] = tasks.map((item) => String(item.answer));
+  // Добавляем список ответов очередного задания в хранилище
+  useEffect(() => {
+    dispatch(addList({ index, items: answers, answers:answers,questions:tasks.map((item) => String(item.question)), quizType: "M" }));
+  }, []);
+
+  useEffect(() => {
+    dispatch(mixUp());
+  }, []);
+
+
+
+  return (
+    <Grid container spacing={2}>
+      <Grid size={12}>
+        <SortableList index={index} answers={answers} />
+      </Grid>
+    </Grid>
+  );
+}
+
+export default Matching

site/src/quiz/features/quizSlice.tsx

@@ -20,6 +20,7 @@ function shuffle<T>(array: Array<T>): Array<T> {
 
 interface QuizState {
   userAnswers: (string | boolean)[][]; // хранит перемещаемые элементы каждого списка ответов
+  questions: string[][];
   correctAnswers: (string | boolean)[][];// ответы для вопрсов, в случае с matching просто правильная последоавтельность, для sorting аналогично, для choosе последоватеьность boolean 
   quizTypes: Array<"M" | "S" | "C">;
   isTestingDone: boolean// запрет на взаимодействие с квизом после окончания тестирования, чтобю юзер не наглел
@@ -29,6 +30,7 @@ const initialState: QuizState = {
   userAnswers: [],
   correctAnswers: [],
   quizTypes: [],
+  questions:[],
   isTestingDone: false,
 };
 
@@ -36,8 +38,9 @@ const listsSlice = createSlice({
   name: 'lists',
   initialState,
   reducers: {
-    addList: (state, action: PayloadAction<{ index: number; items: string[]; answers: (string|boolean)[]; quizType : "S" | "M" | "C"}>) => {
-      const { index, items,answers,quizType} = action.payload;
+    addList: (state, action: PayloadAction<{ index: number; items: string[]; questions: string[]; answers: (string|boolean)[]; quizType : "S" | "M" | "C"}>) => {
+      const { index, items,questions,answers,quizType} = action.payload;
+      state.questions.splice(index, 1, questions); 
       state.userAnswers.splice(index, 1, items); // с нулём создаётся по 2 экземпляра, видно в отладке
       state.quizTypes.splice(index, 1, quizType); //
       state.correctAnswers.splice(index, 1, answers);
@@ -49,16 +52,20 @@ const listsSlice = createSlice({
         state.userAnswers[index] = items; // обновляем конкретный список
       }
     },
-    setCheckedItems: (state, action: PayloadAction<{ index: number; items:  (string|boolean)[] }>) => {
+    setCheckedItems: (state, action: PayloadAction<{ index: number; items:  boolean[] }>) => {
       const { index, items } = action.payload;
       if (index >= 0 && index < state.userAnswers.length) {
         state.userAnswers[index] = items; // обновляем конкретный список
       }
     },
     mixUp: (state) => {
-      state.userAnswers = state.userAnswers.map((list) => {
-        if(typeof(list[0])==="boolean"){
-          return list.map(()=>false);
+      state.userAnswers = state.userAnswers.map((list,index) => {
+        if(typeof(state.correctAnswers[index][0])==="boolean"){
+          list.map(()=>false);
+          let indexes = shuffle( list.map((_,idx)=>idx));
+          state.correctAnswers[index]=state.correctAnswers[index].map((_,i,arr)=>arr[indexes[i]])
+          state.questions[index]=state.questions[index].map((_,i,arr)=>arr[indexes[i]])
+          return list.map(()=>false)
         }
         return shuffle<string|boolean>(list);
       })
@@ -73,6 +80,6 @@ const listsSlice = createSlice({
 });
 
 // Экспортируем действия и редьюсер
-export const { addList, setDraggedItems, mixUp, startTesting, stopTesting } = listsSlice.actions;
+export const { addList, setDraggedItems,setCheckedItems, mixUp, startTesting, stopTesting } = listsSlice.actions;
 export type { QuizState }
 export default listsSlice.reducer;

site/src/quiz/quizData.tsx

@@ -12,81 +12,141 @@ export type tQuizzes = {
 
 export const quiz: tQuizzes = [
   {
-    "id": 1,
-    "type": "M",
-    "title": "вопросй",
+    "id": 0,
+    "type": "C",
+    "title": "RAM price jump: pick true statements",
     "tasks": [
       {
-        "question": "адын?",
-        "answer": "адын"
+        "question": "AI server demand pushed DRAM contracts up in 2024-2025",
+        "answer": true
       },
       {
-        "question": "2",
-        "answer": "2"
+        "question": "Laptop DDR5 demand was the main global driver",
+        "answer": false
       },
       {
-        "question": "3",
-        "answer": "3"
+        "question": "HBM supply limits affected overall memory pricing",
+        "answer": true
       },
       {
-        "question": "4",
-        "answer": "4"
+        "question": "Memory prices stayed flat through 2025",
+        "answer": false
+      }
+    ]
+  },
+  {
+    "id": 1,
+    "type": "M",
+    "title": "Match RAM market terms",
+    "tasks": [
+      {
+        "question": "HBM",
+        "answer": "High Bandwidth Memory"
       },
+      {
+        "question": "DRAM",
+        "answer": "Dynamic Random Access Memory"
+      },
+      {
+        "question": "NAND",
+        "answer": "Flash storage memory"
+      },
+      {
+        "question": "Contract price",
+        "answer": "Long-term negotiated memory price"
+      }
     ]
   },
   {
     "id": 2,
     "type": "S",
-    "title": "Вопрос 2 СОРТИРУЙ",
+    "title": "Sort AI stack by deployment flow",
     "tasks": [
       {
         "question": "1",
-        "answer": 1
+        "answer": "Collect and clean data"
       },
       {
-        "question": "22",
-        "answer": 2
+        "question": "2",
+        "answer": "Train model"
       },
       {
-        "question": "333",
-        "answer": 3
+        "question": "3",
+        "answer": "Optimize for inference"
       },
       {
-        "question": "4444",
-        "answer": 4
-      },
-      {
-        "question": "5555",
-        "answer": 5
-      },
+        "question": "4",
+        "answer": "Deploy and monitor"
+      }
     ]
-  }
-,
+  },
   {
     "id": 3,
     "type": "C",
-    "title": "Вопрос 3 Выбирай!",
+    "title": "AI trends: choose true",
     "tasks": [
       {
-        "question": "да",
+        "question": "Edge AI adoption grew in 2024-2026",
         "answer": true
       },
       {
-        "question": "нет",
+        "question": "LLMs removed the need for GPUs",
         "answer": false
       },
       {
-        "question": "и снова да",
+        "question": "Smaller task-specific models are still widely used",
         "answer": true
       },
       {
-        "question": "нет",
+        "question": "AI inference always runs only in cloud",
         "answer": false
+      }
+    ]
+  },
+  {
+    "id": 4,
+    "type": "M",
+    "title": "Match low-energy embedded methods",
+    "tasks": [
+      {
+        "question": "Sleep mode",
+        "answer": "Turns off CPU blocks between events"
       },
       {
-        "question": "дааа",
-        "answer": true
+        "question": "DVFS",
+        "answer": "Adjusts voltage and frequency to save power"
       },
+      {
+        "question": "Interrupt wakeup",
+        "answer": "Wakes MCU only on external/internal trigger"
+      },
+      {
+        "question": "Duty cycling",
+        "answer": "Runs sensors and radio in short active bursts"
+      }
+    ]
+  },
+  {
+    "id": 5,
+    "type": "S",
+    "title": "Sort low-energy embedded design steps",
+    "tasks": [
+      {
+        "question": "1",
+        "answer": "Measure baseline current"
+      },
+      {
+        "question": "2",
+        "answer": "Set sleep and wake strategy"
+      },
+      {
+        "question": "3",
+        "answer": "Tune radio and sensor duty cycle"
+      },
+      {
+        "question": "4",
+        "answer": "Validate battery-life target"
+      }
     ]
   }
 ]