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Submission #1045955

# Submission time Handle Problem Language Result Execution time Memory
1045955 2024-08-06T08:43:20 Z vjudge1 Rectangles (IOI19_rect) C++17
72 / 100
 5000 ms 999276 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(pos2[r1][++beg].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:92:46: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   92 |             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 166 ms 590164 KB Output is correct
2 Correct 162 ms 590208 KB Output is correct
3 Correct 184 ms 590176 KB Output is correct
4 Correct 160 ms 590240 KB Output is correct
5 Correct 154 ms 590184 KB Output is correct
6 Correct 163 ms 590160 KB Output is correct
7 Correct 159 ms 590164 KB Output is correct
8 Correct 157 ms 590160 KB Output is correct
9 Correct 155 ms 590164 KB Output is correct
10 Correct 156 ms 590160 KB Output is correct
11 Correct 155 ms 590188 KB Output is correct
12 Correct 157 ms 590168 KB Output is correct
13 Correct 158 ms 590236 KB Output is correct
14 Correct 161 ms 590164 KB Output is correct
15 Correct 161 ms 590204 KB Output is correct
16 Correct 164 ms 590160 KB Output is correct
17 Correct 157 ms 590160 KB Output is correct
18 Correct 157 ms 590188 KB Output is correct
19 Correct 158 ms 590260 KB Output is correct
20 Correct 158 ms 590428 KB Output is correct
21 Correct 157 ms 590268 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 166 ms 590164 KB Output is correct
2 Correct 162 ms 590208 KB Output is correct
3 Correct 184 ms 590176 KB Output is correct
4 Correct 160 ms 590240 KB Output is correct
5 Correct 154 ms 590184 KB Output is correct
6 Correct 163 ms 590160 KB Output is correct
7 Correct 159 ms 590164 KB Output is correct
8 Correct 157 ms 590160 KB Output is correct
9 Correct 155 ms 590164 KB Output is correct
10 Correct 156 ms 590160 KB Output is correct
11 Correct 155 ms 590188 KB Output is correct
12 Correct 157 ms 590168 KB Output is correct
13 Correct 158 ms 590236 KB Output is correct
14 Correct 161 ms 590164 KB Output is correct
15 Correct 161 ms 590204 KB Output is correct
16 Correct 164 ms 590160 KB Output is correct
17 Correct 157 ms 590160 KB Output is correct
18 Correct 157 ms 590188 KB Output is correct
19 Correct 158 ms 590260 KB Output is correct
20 Correct 158 ms 590428 KB Output is correct
21 Correct 157 ms 590268 KB Output is correct
22 Correct 168 ms 591184 KB Output is correct
23 Correct 176 ms 591188 KB Output is correct
24 Correct 177 ms 591184 KB Output is correct
25 Correct 156 ms 590676 KB Output is correct
26 Correct 158 ms 590932 KB Output is correct
27 Correct 159 ms 590932 KB Output is correct
28 Correct 158 ms 590932 KB Output is correct
29 Correct 156 ms 590556 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 166 ms 590164 KB Output is correct
2 Correct 162 ms 590208 KB Output is correct
3 Correct 184 ms 590176 KB Output is correct
4 Correct 160 ms 590240 KB Output is correct
5 Correct 154 ms 590184 KB Output is correct
6 Correct 163 ms 590160 KB Output is correct
7 Correct 159 ms 590164 KB Output is correct
8 Correct 157 ms 590160 KB Output is correct
9 Correct 155 ms 590164 KB Output is correct
10 Correct 156 ms 590160 KB Output is correct
11 Correct 155 ms 590188 KB Output is correct
12 Correct 157 ms 590168 KB Output is correct
13 Correct 158 ms 590236 KB Output is correct
14 Correct 161 ms 590164 KB Output is correct
15 Correct 161 ms 590204 KB Output is correct
16 Correct 164 ms 590160 KB Output is correct
17 Correct 168 ms 591184 KB Output is correct
18 Correct 176 ms 591188 KB Output is correct
19 Correct 177 ms 591184 KB Output is correct
20 Correct 156 ms 590676 KB Output is correct
21 Correct 158 ms 590932 KB Output is correct
22 Correct 159 ms 590932 KB Output is correct
23 Correct 158 ms 590932 KB Output is correct
24 Correct 156 ms 590556 KB Output is correct
25 Correct 157 ms 590160 KB Output is correct
26 Correct 157 ms 590188 KB Output is correct
27 Correct 158 ms 590260 KB Output is correct
28 Correct 158 ms 590428 KB Output is correct
29 Correct 157 ms 590268 KB Output is correct
30 Correct 267 ms 595632 KB Output is correct
31 Correct 261 ms 595656 KB Output is correct
32 Correct 266 ms 595656 KB Output is correct
33 Correct 168 ms 592464 KB Output is correct
34 Correct 176 ms 595404 KB Output is correct
35 Correct 183 ms 595404 KB Output is correct
36 Correct 187 ms 595172 KB Output is correct
37 Correct 176 ms 595152 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 166 ms 590164 KB Output is correct
2 Correct 162 ms 590208 KB Output is correct
3 Correct 184 ms 590176 KB Output is correct
4 Correct 160 ms 590240 KB Output is correct
5 Correct 154 ms 590184 KB Output is correct
6 Correct 163 ms 590160 KB Output is correct
7 Correct 159 ms 590164 KB Output is correct
8 Correct 157 ms 590160 KB Output is correct
9 Correct 155 ms 590164 KB Output is correct
10 Correct 156 ms 590160 KB Output is correct
11 Correct 155 ms 590188 KB Output is correct
12 Correct 157 ms 590168 KB Output is correct
13 Correct 158 ms 590236 KB Output is correct
14 Correct 161 ms 590164 KB Output is correct
15 Correct 161 ms 590204 KB Output is correct
16 Correct 164 ms 590160 KB Output is correct
17 Correct 168 ms 591184 KB Output is correct
18 Correct 176 ms 591188 KB Output is correct
19 Correct 177 ms 591184 KB Output is correct
20 Correct 156 ms 590676 KB Output is correct
21 Correct 158 ms 590932 KB Output is correct
22 Correct 159 ms 590932 KB Output is correct
23 Correct 158 ms 590932 KB Output is correct
24 Correct 156 ms 590556 KB Output is correct
25 Correct 267 ms 595632 KB Output is correct
26 Correct 261 ms 595656 KB Output is correct
27 Correct 266 ms 595656 KB Output is correct
28 Correct 168 ms 592464 KB Output is correct
29 Correct 176 ms 595404 KB Output is correct
30 Correct 183 ms 595404 KB Output is correct
31 Correct 187 ms 595172 KB Output is correct
32 Correct 176 ms 595152 KB Output is correct
33 Correct 157 ms 590160 KB Output is correct
34 Correct 157 ms 590188 KB Output is correct
35 Correct 158 ms 590260 KB Output is correct
36 Correct 158 ms 590428 KB Output is correct
37 Correct 157 ms 590268 KB Output is correct
38 Correct 517 ms 625188 KB Output is correct
39 Correct 527 ms 624944 KB Output is correct
40 Correct 536 ms 625040 KB Output is correct
41 Correct 2200 ms 625104 KB Output is correct
42 Correct 4361 ms 653224 KB Output is correct
43 Correct 4387 ms 652972 KB Output is correct
44 Correct 4374 ms 653352 KB Output is correct
45 Correct 3975 ms 649396 KB Output is correct
46 Correct 301 ms 608960 KB Output is correct
47 Correct 319 ms 616924 KB Output is correct
48 Correct 514 ms 649664 KB Output is correct
49 Correct 542 ms 652360 KB Output is correct
50 Correct 325 ms 621272 KB Output is correct
51 Correct 309 ms 621040 KB Output is correct
52 Correct 537 ms 648024 KB Output is correct
53 Correct 517 ms 648576 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 591700 KB Output is correct
2 Correct 162 ms 591440 KB Output is correct
3 Correct 158 ms 590160 KB Output is correct
4 Correct 155 ms 590284 KB Output is correct
5 Correct 167 ms 590416 KB Output is correct
6 Correct 161 ms 590440 KB Output is correct
7 Correct 160 ms 590484 KB Output is correct
8 Correct 155 ms 590416 KB Output is correct
9 Correct 159 ms 590416 KB Output is correct
10 Correct 156 ms 590164 KB Output is correct
11 Correct 155 ms 590160 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 157 ms 590160 KB Output is correct
2 Correct 157 ms 590188 KB Output is correct
3 Correct 158 ms 590260 KB Output is correct
4 Correct 158 ms 590428 KB Output is correct
5 Correct 157 ms 590268 KB Output is correct
6 Correct 156 ms 590264 KB Output is correct
7 Correct 1010 ms 696272 KB Output is correct
8 Correct 2149 ms 829476 KB Output is correct
9 Correct 2186 ms 830428 KB Output is correct
10 Correct 2153 ms 830464 KB Output is correct
11 Correct 496 ms 620612 KB Output is correct
12 Correct 880 ms 647636 KB Output is correct
13 Correct 903 ms 651208 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 166 ms 590164 KB Output is correct
2 Correct 162 ms 590208 KB Output is correct
3 Correct 184 ms 590176 KB Output is correct
4 Correct 160 ms 590240 KB Output is correct
5 Correct 154 ms 590184 KB Output is correct
6 Correct 163 ms 590160 KB Output is correct
7 Correct 159 ms 590164 KB Output is correct
8 Correct 157 ms 590160 KB Output is correct
9 Correct 155 ms 590164 KB Output is correct
10 Correct 156 ms 590160 KB Output is correct
11 Correct 155 ms 590188 KB Output is correct
12 Correct 157 ms 590168 KB Output is correct
13 Correct 158 ms 590236 KB Output is correct
14 Correct 161 ms 590164 KB Output is correct
15 Correct 161 ms 590204 KB Output is correct
16 Correct 164 ms 590160 KB Output is correct
17 Correct 168 ms 591184 KB Output is correct
18 Correct 176 ms 591188 KB Output is correct
19 Correct 177 ms 591184 KB Output is correct
20 Correct 156 ms 590676 KB Output is correct
21 Correct 158 ms 590932 KB Output is correct
22 Correct 159 ms 590932 KB Output is correct
23 Correct 158 ms 590932 KB Output is correct
24 Correct 156 ms 590556 KB Output is correct
25 Correct 267 ms 595632 KB Output is correct
26 Correct 261 ms 595656 KB Output is correct
27 Correct 266 ms 595656 KB Output is correct
28 Correct 168 ms 592464 KB Output is correct
29 Correct 176 ms 595404 KB Output is correct
30 Correct 183 ms 595404 KB Output is correct
31 Correct 187 ms 595172 KB Output is correct
32 Correct 176 ms 595152 KB Output is correct
33 Correct 517 ms 625188 KB Output is correct
34 Correct 527 ms 624944 KB Output is correct
35 Correct 536 ms 625040 KB Output is correct
36 Correct 2200 ms 625104 KB Output is correct
37 Correct 4361 ms 653224 KB Output is correct
38 Correct 4387 ms 652972 KB Output is correct
39 Correct 4374 ms 653352 KB Output is correct
40 Correct 3975 ms 649396 KB Output is correct
41 Correct 301 ms 608960 KB Output is correct
42 Correct 319 ms 616924 KB Output is correct
43 Correct 514 ms 649664 KB Output is correct
44 Correct 542 ms 652360 KB Output is correct
45 Correct 325 ms 621272 KB Output is correct
46 Correct 309 ms 621040 KB Output is correct
47 Correct 537 ms 648024 KB Output is correct
48 Correct 517 ms 648576 KB Output is correct
49 Correct 162 ms 591700 KB Output is correct
50 Correct 162 ms 591440 KB Output is correct
51 Correct 158 ms 590160 KB Output is correct
52 Correct 155 ms 590284 KB Output is correct
53 Correct 167 ms 590416 KB Output is correct
54 Correct 161 ms 590440 KB Output is correct
55 Correct 160 ms 590484 KB Output is correct
56 Correct 155 ms 590416 KB Output is correct
57 Correct 159 ms 590416 KB Output is correct
58 Correct 156 ms 590164 KB Output is correct
59 Correct 155 ms 590160 KB Output is correct
60 Correct 156 ms 590264 KB Output is correct
61 Correct 1010 ms 696272 KB Output is correct
62 Correct 2149 ms 829476 KB Output is correct
63 Correct 2186 ms 830428 KB Output is correct
64 Correct 2153 ms 830464 KB Output is correct
65 Correct 496 ms 620612 KB Output is correct
66 Correct 880 ms 647636 KB Output is correct
67 Correct 903 ms 651208 KB Output is correct
68 Correct 157 ms 590160 KB Output is correct
69 Correct 157 ms 590188 KB Output is correct
70 Correct 158 ms 590260 KB Output is correct
71 Correct 158 ms 590428 KB Output is correct
72 Correct 157 ms 590268 KB Output is correct
73 Execution timed out 5082 ms 999276 KB Time limit exceeded
74 Halted 0 ms 0 KB -