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Submission #1045987

# Submission time Handle Problem Language Result Execution time Memory
1045987 2024-08-06T08:50:27 Z vjudge1 Rectangles (IOI19_rect) C++17
72 / 100
 2875 ms 1048576 KB 
#include "rect.h"
#include<bits/stdc++.h>
using namespace std;
#pragma GCC optimize(2)
set<short>pos[2500][2500],pos2[2500][2500],stb[2500][20];
set<short> operator & (const set<short>&a,const set<short>&b){
    set<short>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-1;
}
int cnt(int l,int r,int col){
    int x=31-__builtin_clz(r-l+1);
    set<short>k=stb[l][x]&stb[r-(1<<x)+1][x];
    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:78:50: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   78 |                 stb[i][j]=stb[i][j-1]&stb[i+(1<<j-1)][j-1];
      |                                                 ~^~
rect.cpp:87:46: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   87 |             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 162 ms 589780 KB Output is correct
2 Correct 167 ms 589908 KB Output is correct
3 Correct 169 ms 589796 KB Output is correct
4 Correct 164 ms 590160 KB Output is correct
5 Correct 163 ms 589684 KB Output is correct
6 Correct 164 ms 589908 KB Output is correct
7 Correct 165 ms 589652 KB Output is correct
8 Correct 175 ms 589748 KB Output is correct
9 Correct 169 ms 589908 KB Output is correct
10 Correct 170 ms 589712 KB Output is correct
11 Correct 182 ms 589896 KB Output is correct
12 Correct 175 ms 590012 KB Output is correct
13 Correct 162 ms 589648 KB Output is correct
14 Correct 164 ms 589836 KB Output is correct
15 Correct 167 ms 589788 KB Output is correct
16 Correct 161 ms 589676 KB Output is correct
17 Correct 203 ms 589652 KB Output is correct
18 Correct 165 ms 589648 KB Output is correct
19 Correct 162 ms 589892 KB Output is correct
20 Correct 162 ms 589808 KB Output is correct
21 Correct 165 ms 589652 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 589780 KB Output is correct
2 Correct 167 ms 589908 KB Output is correct
3 Correct 169 ms 589796 KB Output is correct
4 Correct 164 ms 590160 KB Output is correct
5 Correct 163 ms 589684 KB Output is correct
6 Correct 164 ms 589908 KB Output is correct
7 Correct 165 ms 589652 KB Output is correct
8 Correct 175 ms 589748 KB Output is correct
9 Correct 169 ms 589908 KB Output is correct
10 Correct 170 ms 589712 KB Output is correct
11 Correct 182 ms 589896 KB Output is correct
12 Correct 175 ms 590012 KB Output is correct
13 Correct 162 ms 589648 KB Output is correct
14 Correct 164 ms 589836 KB Output is correct
15 Correct 167 ms 589788 KB Output is correct
16 Correct 161 ms 589676 KB Output is correct
17 Correct 203 ms 589652 KB Output is correct
18 Correct 165 ms 589648 KB Output is correct
19 Correct 162 ms 589892 KB Output is correct
20 Correct 162 ms 589808 KB Output is correct
21 Correct 165 ms 589652 KB Output is correct
22 Correct 173 ms 590676 KB Output is correct
23 Correct 183 ms 590672 KB Output is correct
24 Correct 181 ms 590704 KB Output is correct
25 Correct 176 ms 590228 KB Output is correct
26 Correct 169 ms 590576 KB Output is correct
27 Correct 164 ms 590672 KB Output is correct
28 Correct 169 ms 590508 KB Output is correct
29 Correct 162 ms 590160 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 589780 KB Output is correct
2 Correct 167 ms 589908 KB Output is correct
3 Correct 169 ms 589796 KB Output is correct
4 Correct 164 ms 590160 KB Output is correct
5 Correct 163 ms 589684 KB Output is correct
6 Correct 164 ms 589908 KB Output is correct
7 Correct 165 ms 589652 KB Output is correct
8 Correct 175 ms 589748 KB Output is correct
9 Correct 169 ms 589908 KB Output is correct
10 Correct 170 ms 589712 KB Output is correct
11 Correct 182 ms 589896 KB Output is correct
12 Correct 175 ms 590012 KB Output is correct
13 Correct 162 ms 589648 KB Output is correct
14 Correct 164 ms 589836 KB Output is correct
15 Correct 167 ms 589788 KB Output is correct
16 Correct 161 ms 589676 KB Output is correct
17 Correct 173 ms 590676 KB Output is correct
18 Correct 183 ms 590672 KB Output is correct
19 Correct 181 ms 590704 KB Output is correct
20 Correct 176 ms 590228 KB Output is correct
21 Correct 169 ms 590576 KB Output is correct
22 Correct 164 ms 590672 KB Output is correct
23 Correct 169 ms 590508 KB Output is correct
24 Correct 162 ms 590160 KB Output is correct
25 Correct 203 ms 589652 KB Output is correct
26 Correct 165 ms 589648 KB Output is correct
27 Correct 162 ms 589892 KB Output is correct
28 Correct 162 ms 589808 KB Output is correct
29 Correct 165 ms 589652 KB Output is correct
30 Correct 188 ms 595144 KB Output is correct
31 Correct 198 ms 595228 KB Output is correct
32 Correct 184 ms 595148 KB Output is correct
33 Correct 176 ms 591948 KB Output is correct
34 Correct 197 ms 594868 KB Output is correct
35 Correct 195 ms 595004 KB Output is correct
36 Correct 201 ms 594888 KB Output is correct
37 Correct 206 ms 594640 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 589780 KB Output is correct
2 Correct 167 ms 589908 KB Output is correct
3 Correct 169 ms 589796 KB Output is correct
4 Correct 164 ms 590160 KB Output is correct
5 Correct 163 ms 589684 KB Output is correct
6 Correct 164 ms 589908 KB Output is correct
7 Correct 165 ms 589652 KB Output is correct
8 Correct 175 ms 589748 KB Output is correct
9 Correct 169 ms 589908 KB Output is correct
10 Correct 170 ms 589712 KB Output is correct
11 Correct 182 ms 589896 KB Output is correct
12 Correct 175 ms 590012 KB Output is correct
13 Correct 162 ms 589648 KB Output is correct
14 Correct 164 ms 589836 KB Output is correct
15 Correct 167 ms 589788 KB Output is correct
16 Correct 161 ms 589676 KB Output is correct
17 Correct 173 ms 590676 KB Output is correct
18 Correct 183 ms 590672 KB Output is correct
19 Correct 181 ms 590704 KB Output is correct
20 Correct 176 ms 590228 KB Output is correct
21 Correct 169 ms 590576 KB Output is correct
22 Correct 164 ms 590672 KB Output is correct
23 Correct 169 ms 590508 KB Output is correct
24 Correct 162 ms 590160 KB Output is correct
25 Correct 188 ms 595144 KB Output is correct
26 Correct 198 ms 595228 KB Output is correct
27 Correct 184 ms 595148 KB Output is correct
28 Correct 176 ms 591948 KB Output is correct
29 Correct 197 ms 594868 KB Output is correct
30 Correct 195 ms 595004 KB Output is correct
31 Correct 201 ms 594888 KB Output is correct
32 Correct 206 ms 594640 KB Output is correct
33 Correct 203 ms 589652 KB Output is correct
34 Correct 165 ms 589648 KB Output is correct
35 Correct 162 ms 589892 KB Output is correct
36 Correct 162 ms 589808 KB Output is correct
37 Correct 165 ms 589652 KB Output is correct
38 Correct 323 ms 624072 KB Output is correct
39 Correct 330 ms 624316 KB Output is correct
40 Correct 334 ms 624176 KB Output is correct
41 Correct 359 ms 624196 KB Output is correct
42 Correct 533 ms 651940 KB Output is correct
43 Correct 533 ms 652244 KB Output is correct
44 Correct 567 ms 652192 KB Output is correct
45 Correct 538 ms 648304 KB Output is correct
46 Correct 315 ms 608456 KB Output is correct
47 Correct 348 ms 616512 KB Output is correct
48 Correct 505 ms 649024 KB Output is correct
49 Correct 479 ms 651268 KB Output is correct
50 Correct 346 ms 620648 KB Output is correct
51 Correct 313 ms 620348 KB Output is correct
52 Correct 495 ms 646976 KB Output is correct
53 Correct 642 ms 647632 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 204 ms 591364 KB Output is correct
2 Correct 185 ms 591192 KB Output is correct
3 Correct 164 ms 589756 KB Output is correct
4 Correct 182 ms 589652 KB Output is correct
5 Correct 190 ms 590032 KB Output is correct
6 Correct 186 ms 590180 KB Output is correct
7 Correct 166 ms 589988 KB Output is correct
8 Correct 176 ms 590064 KB Output is correct
9 Correct 167 ms 590164 KB Output is correct
10 Correct 166 ms 589712 KB Output is correct
11 Correct 166 ms 589908 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 203 ms 589652 KB Output is correct
2 Correct 165 ms 589648 KB Output is correct
3 Correct 162 ms 589892 KB Output is correct
4 Correct 162 ms 589808 KB Output is correct
5 Correct 165 ms 589652 KB Output is correct
6 Correct 194 ms 589648 KB Output is correct
7 Correct 1077 ms 700348 KB Output is correct
8 Correct 2188 ms 826824 KB Output is correct
9 Correct 2300 ms 827616 KB Output is correct
10 Correct 2315 ms 827784 KB Output is correct
11 Correct 505 ms 618812 KB Output is correct
12 Correct 974 ms 644864 KB Output is correct
13 Correct 994 ms 648432 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 589780 KB Output is correct
2 Correct 167 ms 589908 KB Output is correct
3 Correct 169 ms 589796 KB Output is correct
4 Correct 164 ms 590160 KB Output is correct
5 Correct 163 ms 589684 KB Output is correct
6 Correct 164 ms 589908 KB Output is correct
7 Correct 165 ms 589652 KB Output is correct
8 Correct 175 ms 589748 KB Output is correct
9 Correct 169 ms 589908 KB Output is correct
10 Correct 170 ms 589712 KB Output is correct
11 Correct 182 ms 589896 KB Output is correct
12 Correct 175 ms 590012 KB Output is correct
13 Correct 162 ms 589648 KB Output is correct
14 Correct 164 ms 589836 KB Output is correct
15 Correct 167 ms 589788 KB Output is correct
16 Correct 161 ms 589676 KB Output is correct
17 Correct 173 ms 590676 KB Output is correct
18 Correct 183 ms 590672 KB Output is correct
19 Correct 181 ms 590704 KB Output is correct
20 Correct 176 ms 590228 KB Output is correct
21 Correct 169 ms 590576 KB Output is correct
22 Correct 164 ms 590672 KB Output is correct
23 Correct 169 ms 590508 KB Output is correct
24 Correct 162 ms 590160 KB Output is correct
25 Correct 188 ms 595144 KB Output is correct
26 Correct 198 ms 595228 KB Output is correct
27 Correct 184 ms 595148 KB Output is correct
28 Correct 176 ms 591948 KB Output is correct
29 Correct 197 ms 594868 KB Output is correct
30 Correct 195 ms 595004 KB Output is correct
31 Correct 201 ms 594888 KB Output is correct
32 Correct 206 ms 594640 KB Output is correct
33 Correct 323 ms 624072 KB Output is correct
34 Correct 330 ms 624316 KB Output is correct
35 Correct 334 ms 624176 KB Output is correct
36 Correct 359 ms 624196 KB Output is correct
37 Correct 533 ms 651940 KB Output is correct
38 Correct 533 ms 652244 KB Output is correct
39 Correct 567 ms 652192 KB Output is correct
40 Correct 538 ms 648304 KB Output is correct
41 Correct 315 ms 608456 KB Output is correct
42 Correct 348 ms 616512 KB Output is correct
43 Correct 505 ms 649024 KB Output is correct
44 Correct 479 ms 651268 KB Output is correct
45 Correct 346 ms 620648 KB Output is correct
46 Correct 313 ms 620348 KB Output is correct
47 Correct 495 ms 646976 KB Output is correct
48 Correct 642 ms 647632 KB Output is correct
49 Correct 204 ms 591364 KB Output is correct
50 Correct 185 ms 591192 KB Output is correct
51 Correct 164 ms 589756 KB Output is correct
52 Correct 182 ms 589652 KB Output is correct
53 Correct 190 ms 590032 KB Output is correct
54 Correct 186 ms 590180 KB Output is correct
55 Correct 166 ms 589988 KB Output is correct
56 Correct 176 ms 590064 KB Output is correct
57 Correct 167 ms 590164 KB Output is correct
58 Correct 166 ms 589712 KB Output is correct
59 Correct 166 ms 589908 KB Output is correct
60 Correct 194 ms 589648 KB Output is correct
61 Correct 1077 ms 700348 KB Output is correct
62 Correct 2188 ms 826824 KB Output is correct
63 Correct 2300 ms 827616 KB Output is correct
64 Correct 2315 ms 827784 KB Output is correct
65 Correct 505 ms 618812 KB Output is correct
66 Correct 974 ms 644864 KB Output is correct
67 Correct 994 ms 648432 KB Output is correct
68 Correct 203 ms 589652 KB Output is correct
69 Correct 165 ms 589648 KB Output is correct
70 Correct 162 ms 589892 KB Output is correct
71 Correct 162 ms 589808 KB Output is correct
72 Correct 165 ms 589652 KB Output is correct
73 Correct 2553 ms 1033200 KB Output is correct
74 Correct 2875 ms 1033292 KB Output is correct
75 Correct 2532 ms 1032488 KB Output is correct
76 Correct 2782 ms 1029248 KB Output is correct
77 Runtime error 781 ms 1048576 KB Execution killed with signal 9
78 Halted 0 ms 0 KB -