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Submission #1045961

# Submission time Handle Problem Language Result Execution time Memory
1045961 2024-08-06T08:45:43 Z vjudge1 Rectangles (IOI19_rect) C++17
72 / 100
 5000 ms 998404 KB 
#include "rect.h"
#include<bits/stdc++.h>
using namespace std;
set<int>pos[2501][2501],pos2[2501][2501],stb[2501][20];
set<int> operator & (const set<int>&a,const set<int>&b){
    set<int>c;
    if(a.size()<b.size()){
        for(auto i:a)
            if(b.count(i))
                c.insert(i);
    } else for(auto i:b)
        if(a.count(i))
            c.insert(i);
    return c;
}
vector<array<int,4>> ops;
int CC;
vector<int>res;
int calc(int r1,int r2,int beg){
    /*for(int i=20;i--;)
        if(stb[beg][i].count(r2))
            beg+=1<<i;
    return beg;*/
    while(stb[++beg][0].count(r2));
    return beg-1;
}
int cnt(int l,int r,int col){
    /*int x=31-__builtin_clz(r-l+1);
    set<int>k=stb[l][x]&stb[r-(1<<x)+1][x];*/
    set<int>k=pos[l][col];
    for(int i=l;i++<r;)
        k=k&pos[i][col];
    return distance(k.begin(),k.upper_bound(res[CC++]));
}
long long count_rectangles(std::vector<std::vector<int> > a) {
    int n=a.size(),m=a[0].size();
    int ans=0;
    for(int i=1;i<n-1;i++){
        stack<int>stk;
        stk.push(m-1);
        for(int j=m-1;j--;){
            while(stk.size()&&a[i][j]>a[i][stk.top()])
                pos[i][j+1].insert(stk.top()-1),stk.pop();
            if(stk.size()){
                pos[i][j+1].insert(stk.top()-1);
                if(a[i][stk.top()]==a[i][j])
                    stk.pop();
            }
            stk.push(j);
            pos[i][j+1].erase(j);
        }
    }
    for(int j=1;j<m-1;j++){
        stack<int>stk;
        stk.push(n-1);
        for(int i=n-1;i--;){
            while(stk.size()&&a[i][j]>a[stk.top()][j])
                pos2[i+1][j].insert(stk.top()-1),stk.pop(); 
            if(stk.size()){
                pos2[i+1][j].insert(stk.top()-1);
                if(a[stk.top()][j]==a[i][j])
                    stk.pop();
            }
            stk.push(i);
            pos2[i+1][j].erase(i);
        }
    }
    for(int j=1;j<m-1;j++)
        for(int i=1;i<n-1;i++)
            for(auto x:pos2[i][j])
                ops.push_back({i,x,j,CC++});
    res.resize(CC);
    CC=0;
    sort(ops.begin(),ops.end());
    int currr=0;
    for(auto[r1,r2,col,id]:ops){
        if(r1-currr) {
            currr=r1;
            for(int i=1;i<m-1;i++)
                stb[i][0]=pos2[r1][i];
            for(int j=1;j<20;j++) for(int i=1;i+(1<<j)<m;i++)
                stb[i][j]=stb[i][j-1]&stb[i+(1<<j-1)][j-1];
        }
        res[id]=calc(r1,r2,col);
    }
    ops.clear();
    for(int col=1;col<m-1;col++){
        for(int i=1;i<n-1;i++)
            stb[i][0]=pos[i][col];
        for(int j=1;j<20;j++) for(int i=1;i+(1<<j)<n;i++)
            stb[i][j]=stb[i][j-1]&stb[i+(1<<j-1)][j-1];
        for(int row1=1;row1<n-1;row1++)
            for(auto row2:pos2[row1][col])
                ans+=cnt(row1,row2,col);
    }
    return ans;
}

Compilation message

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:82:50: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   82 |                 stb[i][j]=stb[i][j-1]&stb[i+(1<<j-1)][j-1];
      |                                                 ~^~
rect.cpp:91:46: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   91 |             stb[i][j]=stb[i][j-1]&stb[i+(1<<j-1)][j-1];
      |                                             ~^~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 161 ms 590160 KB Output is correct
2 Correct 162 ms 590404 KB Output is correct
3 Correct 158 ms 590252 KB Output is correct
4 Correct 174 ms 590372 KB Output is correct
5 Correct 166 ms 590160 KB Output is correct
6 Correct 174 ms 590420 KB Output is correct
7 Correct 156 ms 590160 KB Output is correct
8 Correct 158 ms 590112 KB Output is correct
9 Correct 162 ms 590352 KB Output is correct
10 Correct 162 ms 590232 KB Output is correct
11 Correct 167 ms 590252 KB Output is correct
12 Correct 157 ms 590456 KB Output is correct
13 Correct 203 ms 590144 KB Output is correct
14 Correct 172 ms 590164 KB Output is correct
15 Correct 163 ms 590164 KB Output is correct
16 Correct 157 ms 590128 KB Output is correct
17 Correct 159 ms 590240 KB Output is correct
18 Correct 154 ms 590312 KB Output is correct
19 Correct 161 ms 590260 KB Output is correct
20 Correct 155 ms 590212 KB Output is correct
21 Correct 156 ms 590164 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 161 ms 590160 KB Output is correct
2 Correct 162 ms 590404 KB Output is correct
3 Correct 158 ms 590252 KB Output is correct
4 Correct 174 ms 590372 KB Output is correct
5 Correct 166 ms 590160 KB Output is correct
6 Correct 174 ms 590420 KB Output is correct
7 Correct 156 ms 590160 KB Output is correct
8 Correct 158 ms 590112 KB Output is correct
9 Correct 162 ms 590352 KB Output is correct
10 Correct 162 ms 590232 KB Output is correct
11 Correct 167 ms 590252 KB Output is correct
12 Correct 157 ms 590456 KB Output is correct
13 Correct 203 ms 590144 KB Output is correct
14 Correct 172 ms 590164 KB Output is correct
15 Correct 163 ms 590164 KB Output is correct
16 Correct 157 ms 590128 KB Output is correct
17 Correct 159 ms 590240 KB Output is correct
18 Correct 154 ms 590312 KB Output is correct
19 Correct 161 ms 590260 KB Output is correct
20 Correct 155 ms 590212 KB Output is correct
21 Correct 156 ms 590164 KB Output is correct
22 Correct 164 ms 591188 KB Output is correct
23 Correct 191 ms 591124 KB Output is correct
24 Correct 162 ms 591188 KB Output is correct
25 Correct 161 ms 590672 KB Output is correct
26 Correct 162 ms 590972 KB Output is correct
27 Correct 156 ms 591048 KB Output is correct
28 Correct 157 ms 590928 KB Output is correct
29 Correct 161 ms 590504 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 161 ms 590160 KB Output is correct
2 Correct 162 ms 590404 KB Output is correct
3 Correct 158 ms 590252 KB Output is correct
4 Correct 174 ms 590372 KB Output is correct
5 Correct 166 ms 590160 KB Output is correct
6 Correct 174 ms 590420 KB Output is correct
7 Correct 156 ms 590160 KB Output is correct
8 Correct 158 ms 590112 KB Output is correct
9 Correct 162 ms 590352 KB Output is correct
10 Correct 162 ms 590232 KB Output is correct
11 Correct 167 ms 590252 KB Output is correct
12 Correct 157 ms 590456 KB Output is correct
13 Correct 203 ms 590144 KB Output is correct
14 Correct 172 ms 590164 KB Output is correct
15 Correct 163 ms 590164 KB Output is correct
16 Correct 157 ms 590128 KB Output is correct
17 Correct 164 ms 591188 KB Output is correct
18 Correct 191 ms 591124 KB Output is correct
19 Correct 162 ms 591188 KB Output is correct
20 Correct 161 ms 590672 KB Output is correct
21 Correct 162 ms 590972 KB Output is correct
22 Correct 156 ms 591048 KB Output is correct
23 Correct 157 ms 590928 KB Output is correct
24 Correct 161 ms 590504 KB Output is correct
25 Correct 159 ms 590240 KB Output is correct
26 Correct 154 ms 590312 KB Output is correct
27 Correct 161 ms 590260 KB Output is correct
28 Correct 155 ms 590212 KB Output is correct
29 Correct 156 ms 590164 KB Output is correct
30 Correct 286 ms 595656 KB Output is correct
31 Correct 268 ms 595676 KB Output is correct
32 Correct 271 ms 595656 KB Output is correct
33 Correct 189 ms 592464 KB Output is correct
34 Correct 181 ms 595408 KB Output is correct
35 Correct 190 ms 595508 KB Output is correct
36 Correct 176 ms 595168 KB Output is correct
37 Correct 220 ms 595192 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 161 ms 590160 KB Output is correct
2 Correct 162 ms 590404 KB Output is correct
3 Correct 158 ms 590252 KB Output is correct
4 Correct 174 ms 590372 KB Output is correct
5 Correct 166 ms 590160 KB Output is correct
6 Correct 174 ms 590420 KB Output is correct
7 Correct 156 ms 590160 KB Output is correct
8 Correct 158 ms 590112 KB Output is correct
9 Correct 162 ms 590352 KB Output is correct
10 Correct 162 ms 590232 KB Output is correct
11 Correct 167 ms 590252 KB Output is correct
12 Correct 157 ms 590456 KB Output is correct
13 Correct 203 ms 590144 KB Output is correct
14 Correct 172 ms 590164 KB Output is correct
15 Correct 163 ms 590164 KB Output is correct
16 Correct 157 ms 590128 KB Output is correct
17 Correct 164 ms 591188 KB Output is correct
18 Correct 191 ms 591124 KB Output is correct
19 Correct 162 ms 591188 KB Output is correct
20 Correct 161 ms 590672 KB Output is correct
21 Correct 162 ms 590972 KB Output is correct
22 Correct 156 ms 591048 KB Output is correct
23 Correct 157 ms 590928 KB Output is correct
24 Correct 161 ms 590504 KB Output is correct
25 Correct 286 ms 595656 KB Output is correct
26 Correct 268 ms 595676 KB Output is correct
27 Correct 271 ms 595656 KB Output is correct
28 Correct 189 ms 592464 KB Output is correct
29 Correct 181 ms 595408 KB Output is correct
30 Correct 190 ms 595508 KB Output is correct
31 Correct 176 ms 595168 KB Output is correct
32 Correct 220 ms 595192 KB Output is correct
33 Correct 159 ms 590240 KB Output is correct
34 Correct 154 ms 590312 KB Output is correct
35 Correct 161 ms 590260 KB Output is correct
36 Correct 155 ms 590212 KB Output is correct
37 Correct 156 ms 590164 KB Output is correct
38 Correct 572 ms 623896 KB Output is correct
39 Correct 533 ms 623768 KB Output is correct
40 Correct 526 ms 623556 KB Output is correct
41 Correct 2288 ms 623764 KB Output is correct
42 Correct 4712 ms 651432 KB Output is correct
43 Correct 4629 ms 651512 KB Output is correct
44 Correct 4510 ms 651852 KB Output is correct
45 Correct 4147 ms 647940 KB Output is correct
46 Correct 298 ms 608716 KB Output is correct
47 Correct 322 ms 616928 KB Output is correct
48 Correct 476 ms 649044 KB Output is correct
49 Correct 489 ms 650680 KB Output is correct
50 Correct 348 ms 620600 KB Output is correct
51 Correct 349 ms 620488 KB Output is correct
52 Correct 532 ms 647104 KB Output is correct
53 Correct 562 ms 647144 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 591696 KB Output is correct
2 Correct 171 ms 591444 KB Output is correct
3 Correct 165 ms 590360 KB Output is correct
4 Correct 159 ms 590252 KB Output is correct
5 Correct 159 ms 590416 KB Output is correct
6 Correct 205 ms 590504 KB Output is correct
7 Correct 177 ms 590672 KB Output is correct
8 Correct 158 ms 590416 KB Output is correct
9 Correct 180 ms 590640 KB Output is correct
10 Correct 165 ms 590144 KB Output is correct
11 Correct 158 ms 590244 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 159 ms 590240 KB Output is correct
2 Correct 154 ms 590312 KB Output is correct
3 Correct 161 ms 590260 KB Output is correct
4 Correct 155 ms 590212 KB Output is correct
5 Correct 156 ms 590164 KB Output is correct
6 Correct 159 ms 590320 KB Output is correct
7 Correct 1037 ms 696196 KB Output is correct
8 Correct 2189 ms 823720 KB Output is correct
9 Correct 2196 ms 824904 KB Output is correct
10 Correct 2242 ms 824816 KB Output is correct
11 Correct 502 ms 617812 KB Output is correct
12 Correct 903 ms 642132 KB Output is correct
13 Correct 990 ms 645456 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 161 ms 590160 KB Output is correct
2 Correct 162 ms 590404 KB Output is correct
3 Correct 158 ms 590252 KB Output is correct
4 Correct 174 ms 590372 KB Output is correct
5 Correct 166 ms 590160 KB Output is correct
6 Correct 174 ms 590420 KB Output is correct
7 Correct 156 ms 590160 KB Output is correct
8 Correct 158 ms 590112 KB Output is correct
9 Correct 162 ms 590352 KB Output is correct
10 Correct 162 ms 590232 KB Output is correct
11 Correct 167 ms 590252 KB Output is correct
12 Correct 157 ms 590456 KB Output is correct
13 Correct 203 ms 590144 KB Output is correct
14 Correct 172 ms 590164 KB Output is correct
15 Correct 163 ms 590164 KB Output is correct
16 Correct 157 ms 590128 KB Output is correct
17 Correct 164 ms 591188 KB Output is correct
18 Correct 191 ms 591124 KB Output is correct
19 Correct 162 ms 591188 KB Output is correct
20 Correct 161 ms 590672 KB Output is correct
21 Correct 162 ms 590972 KB Output is correct
22 Correct 156 ms 591048 KB Output is correct
23 Correct 157 ms 590928 KB Output is correct
24 Correct 161 ms 590504 KB Output is correct
25 Correct 286 ms 595656 KB Output is correct
26 Correct 268 ms 595676 KB Output is correct
27 Correct 271 ms 595656 KB Output is correct
28 Correct 189 ms 592464 KB Output is correct
29 Correct 181 ms 595408 KB Output is correct
30 Correct 190 ms 595508 KB Output is correct
31 Correct 176 ms 595168 KB Output is correct
32 Correct 220 ms 595192 KB Output is correct
33 Correct 572 ms 623896 KB Output is correct
34 Correct 533 ms 623768 KB Output is correct
35 Correct 526 ms 623556 KB Output is correct
36 Correct 2288 ms 623764 KB Output is correct
37 Correct 4712 ms 651432 KB Output is correct
38 Correct 4629 ms 651512 KB Output is correct
39 Correct 4510 ms 651852 KB Output is correct
40 Correct 4147 ms 647940 KB Output is correct
41 Correct 298 ms 608716 KB Output is correct
42 Correct 322 ms 616928 KB Output is correct
43 Correct 476 ms 649044 KB Output is correct
44 Correct 489 ms 650680 KB Output is correct
45 Correct 348 ms 620600 KB Output is correct
46 Correct 349 ms 620488 KB Output is correct
47 Correct 532 ms 647104 KB Output is correct
48 Correct 562 ms 647144 KB Output is correct
49 Correct 167 ms 591696 KB Output is correct
50 Correct 171 ms 591444 KB Output is correct
51 Correct 165 ms 590360 KB Output is correct
52 Correct 159 ms 590252 KB Output is correct
53 Correct 159 ms 590416 KB Output is correct
54 Correct 205 ms 590504 KB Output is correct
55 Correct 177 ms 590672 KB Output is correct
56 Correct 158 ms 590416 KB Output is correct
57 Correct 180 ms 590640 KB Output is correct
58 Correct 165 ms 590144 KB Output is correct
59 Correct 158 ms 590244 KB Output is correct
60 Correct 159 ms 590320 KB Output is correct
61 Correct 1037 ms 696196 KB Output is correct
62 Correct 2189 ms 823720 KB Output is correct
63 Correct 2196 ms 824904 KB Output is correct
64 Correct 2242 ms 824816 KB Output is correct
65 Correct 502 ms 617812 KB Output is correct
66 Correct 903 ms 642132 KB Output is correct
67 Correct 990 ms 645456 KB Output is correct
68 Correct 159 ms 590240 KB Output is correct
69 Correct 154 ms 590312 KB Output is correct
70 Correct 161 ms 590260 KB Output is correct
71 Correct 155 ms 590212 KB Output is correct
72 Correct 156 ms 590164 KB Output is correct
73 Execution timed out 5111 ms 998404 KB Time limit exceeded
74 Halted 0 ms 0 KB -