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Submission #1045949

# Submission time Handle Problem Language Result Execution time Memory
1045949 2024-08-06T08:41:15 Z vjudge1 Rectangles (IOI19_rect) C++17
72 / 100
 5000 ms 1044024 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 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=stb[l][0];
    for(int i=l;i++<r;)
        k=k&stb[i][0];
    return distance(k.begin(),k.upper_bound(res[CC++]));
}
int calc(int r1,int r2,int beg){
    while(stb[++beg][0].count(r2));
    return beg-1;
}
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:88:46: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   88 |             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 160 ms 590160 KB Output is correct
2 Correct 166 ms 590416 KB Output is correct
3 Correct 161 ms 590420 KB Output is correct
4 Correct 163 ms 590416 KB Output is correct
5 Correct 169 ms 590208 KB Output is correct
6 Correct 163 ms 590372 KB Output is correct
7 Correct 162 ms 590164 KB Output is correct
8 Correct 175 ms 590160 KB Output is correct
9 Correct 179 ms 590164 KB Output is correct
10 Correct 162 ms 590280 KB Output is correct
11 Correct 165 ms 590372 KB Output is correct
12 Correct 160 ms 590360 KB Output is correct
13 Correct 166 ms 590164 KB Output is correct
14 Correct 162 ms 590168 KB Output is correct
15 Correct 175 ms 590264 KB Output is correct
16 Correct 165 ms 590164 KB Output is correct
17 Correct 162 ms 590164 KB Output is correct
18 Correct 160 ms 590164 KB Output is correct
19 Correct 173 ms 590168 KB Output is correct
20 Correct 163 ms 590164 KB Output is correct
21 Correct 161 ms 590160 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 590160 KB Output is correct
2 Correct 166 ms 590416 KB Output is correct
3 Correct 161 ms 590420 KB Output is correct
4 Correct 163 ms 590416 KB Output is correct
5 Correct 169 ms 590208 KB Output is correct
6 Correct 163 ms 590372 KB Output is correct
7 Correct 162 ms 590164 KB Output is correct
8 Correct 175 ms 590160 KB Output is correct
9 Correct 179 ms 590164 KB Output is correct
10 Correct 162 ms 590280 KB Output is correct
11 Correct 165 ms 590372 KB Output is correct
12 Correct 160 ms 590360 KB Output is correct
13 Correct 166 ms 590164 KB Output is correct
14 Correct 162 ms 590168 KB Output is correct
15 Correct 175 ms 590264 KB Output is correct
16 Correct 165 ms 590164 KB Output is correct
17 Correct 162 ms 590164 KB Output is correct
18 Correct 160 ms 590164 KB Output is correct
19 Correct 173 ms 590168 KB Output is correct
20 Correct 163 ms 590164 KB Output is correct
21 Correct 161 ms 590160 KB Output is correct
22 Correct 170 ms 591188 KB Output is correct
23 Correct 173 ms 591188 KB Output is correct
24 Correct 169 ms 591188 KB Output is correct
25 Correct 162 ms 590628 KB Output is correct
26 Correct 164 ms 591448 KB Output is correct
27 Correct 166 ms 591088 KB Output is correct
28 Correct 168 ms 591036 KB Output is correct
29 Correct 165 ms 590672 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 590160 KB Output is correct
2 Correct 166 ms 590416 KB Output is correct
3 Correct 161 ms 590420 KB Output is correct
4 Correct 163 ms 590416 KB Output is correct
5 Correct 169 ms 590208 KB Output is correct
6 Correct 163 ms 590372 KB Output is correct
7 Correct 162 ms 590164 KB Output is correct
8 Correct 175 ms 590160 KB Output is correct
9 Correct 179 ms 590164 KB Output is correct
10 Correct 162 ms 590280 KB Output is correct
11 Correct 165 ms 590372 KB Output is correct
12 Correct 160 ms 590360 KB Output is correct
13 Correct 166 ms 590164 KB Output is correct
14 Correct 162 ms 590168 KB Output is correct
15 Correct 175 ms 590264 KB Output is correct
16 Correct 165 ms 590164 KB Output is correct
17 Correct 170 ms 591188 KB Output is correct
18 Correct 173 ms 591188 KB Output is correct
19 Correct 169 ms 591188 KB Output is correct
20 Correct 162 ms 590628 KB Output is correct
21 Correct 164 ms 591448 KB Output is correct
22 Correct 166 ms 591088 KB Output is correct
23 Correct 168 ms 591036 KB Output is correct
24 Correct 165 ms 590672 KB Output is correct
25 Correct 162 ms 590164 KB Output is correct
26 Correct 160 ms 590164 KB Output is correct
27 Correct 173 ms 590168 KB Output is correct
28 Correct 163 ms 590164 KB Output is correct
29 Correct 161 ms 590160 KB Output is correct
30 Correct 278 ms 595652 KB Output is correct
31 Correct 266 ms 595568 KB Output is correct
32 Correct 275 ms 595656 KB Output is correct
33 Correct 174 ms 592468 KB Output is correct
34 Correct 182 ms 595408 KB Output is correct
35 Correct 187 ms 595404 KB Output is correct
36 Correct 187 ms 595588 KB Output is correct
37 Correct 182 ms 595152 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 590160 KB Output is correct
2 Correct 166 ms 590416 KB Output is correct
3 Correct 161 ms 590420 KB Output is correct
4 Correct 163 ms 590416 KB Output is correct
5 Correct 169 ms 590208 KB Output is correct
6 Correct 163 ms 590372 KB Output is correct
7 Correct 162 ms 590164 KB Output is correct
8 Correct 175 ms 590160 KB Output is correct
9 Correct 179 ms 590164 KB Output is correct
10 Correct 162 ms 590280 KB Output is correct
11 Correct 165 ms 590372 KB Output is correct
12 Correct 160 ms 590360 KB Output is correct
13 Correct 166 ms 590164 KB Output is correct
14 Correct 162 ms 590168 KB Output is correct
15 Correct 175 ms 590264 KB Output is correct
16 Correct 165 ms 590164 KB Output is correct
17 Correct 170 ms 591188 KB Output is correct
18 Correct 173 ms 591188 KB Output is correct
19 Correct 169 ms 591188 KB Output is correct
20 Correct 162 ms 590628 KB Output is correct
21 Correct 164 ms 591448 KB Output is correct
22 Correct 166 ms 591088 KB Output is correct
23 Correct 168 ms 591036 KB Output is correct
24 Correct 165 ms 590672 KB Output is correct
25 Correct 278 ms 595652 KB Output is correct
26 Correct 266 ms 595568 KB Output is correct
27 Correct 275 ms 595656 KB Output is correct
28 Correct 174 ms 592468 KB Output is correct
29 Correct 182 ms 595408 KB Output is correct
30 Correct 187 ms 595404 KB Output is correct
31 Correct 187 ms 595588 KB Output is correct
32 Correct 182 ms 595152 KB Output is correct
33 Correct 162 ms 590164 KB Output is correct
34 Correct 160 ms 590164 KB Output is correct
35 Correct 173 ms 590168 KB Output is correct
36 Correct 163 ms 590164 KB Output is correct
37 Correct 161 ms 590160 KB Output is correct
38 Correct 564 ms 624840 KB Output is correct
39 Correct 567 ms 625256 KB Output is correct
40 Correct 556 ms 625104 KB Output is correct
41 Correct 2221 ms 625084 KB Output is correct
42 Correct 4247 ms 652968 KB Output is correct
43 Correct 4248 ms 653008 KB Output is correct
44 Correct 4202 ms 653256 KB Output is correct
45 Correct 3928 ms 649392 KB Output is correct
46 Correct 279 ms 608976 KB Output is correct
47 Correct 321 ms 617156 KB Output is correct
48 Correct 465 ms 649924 KB Output is correct
49 Correct 477 ms 652336 KB Output is correct
50 Correct 305 ms 621236 KB Output is correct
51 Correct 302 ms 620992 KB Output is correct
52 Correct 496 ms 647848 KB Output is correct
53 Correct 512 ms 648772 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 164 ms 591792 KB Output is correct
2 Correct 158 ms 591440 KB Output is correct
3 Correct 152 ms 590164 KB Output is correct
4 Correct 148 ms 590100 KB Output is correct
5 Correct 159 ms 590600 KB Output is correct
6 Correct 170 ms 590420 KB Output is correct
7 Correct 158 ms 590420 KB Output is correct
8 Correct 163 ms 590872 KB Output is correct
9 Correct 165 ms 590420 KB Output is correct
10 Correct 181 ms 590144 KB Output is correct
11 Correct 160 ms 590160 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 590164 KB Output is correct
2 Correct 160 ms 590164 KB Output is correct
3 Correct 173 ms 590168 KB Output is correct
4 Correct 163 ms 590164 KB Output is correct
5 Correct 161 ms 590160 KB Output is correct
6 Correct 155 ms 590228 KB Output is correct
7 Correct 1044 ms 696284 KB Output is correct
8 Correct 2182 ms 829776 KB Output is correct
9 Correct 2071 ms 830780 KB Output is correct
10 Correct 2055 ms 830776 KB Output is correct
11 Correct 532 ms 620372 KB Output is correct
12 Correct 900 ms 647824 KB Output is correct
13 Correct 953 ms 651596 KB Output is correct

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 160 ms 590160 KB Output is correct
2 Correct 166 ms 590416 KB Output is correct
3 Correct 161 ms 590420 KB Output is correct
4 Correct 163 ms 590416 KB Output is correct
5 Correct 169 ms 590208 KB Output is correct
6 Correct 163 ms 590372 KB Output is correct
7 Correct 162 ms 590164 KB Output is correct
8 Correct 175 ms 590160 KB Output is correct
9 Correct 179 ms 590164 KB Output is correct
10 Correct 162 ms 590280 KB Output is correct
11 Correct 165 ms 590372 KB Output is correct
12 Correct 160 ms 590360 KB Output is correct
13 Correct 166 ms 590164 KB Output is correct
14 Correct 162 ms 590168 KB Output is correct
15 Correct 175 ms 590264 KB Output is correct
16 Correct 165 ms 590164 KB Output is correct
17 Correct 170 ms 591188 KB Output is correct
18 Correct 173 ms 591188 KB Output is correct
19 Correct 169 ms 591188 KB Output is correct
20 Correct 162 ms 590628 KB Output is correct
21 Correct 164 ms 591448 KB Output is correct
22 Correct 166 ms 591088 KB Output is correct
23 Correct 168 ms 591036 KB Output is correct
24 Correct 165 ms 590672 KB Output is correct
25 Correct 278 ms 595652 KB Output is correct
26 Correct 266 ms 595568 KB Output is correct
27 Correct 275 ms 595656 KB Output is correct
28 Correct 174 ms 592468 KB Output is correct
29 Correct 182 ms 595408 KB Output is correct
30 Correct 187 ms 595404 KB Output is correct
31 Correct 187 ms 595588 KB Output is correct
32 Correct 182 ms 595152 KB Output is correct
33 Correct 564 ms 624840 KB Output is correct
34 Correct 567 ms 625256 KB Output is correct
35 Correct 556 ms 625104 KB Output is correct
36 Correct 2221 ms 625084 KB Output is correct
37 Correct 4247 ms 652968 KB Output is correct
38 Correct 4248 ms 653008 KB Output is correct
39 Correct 4202 ms 653256 KB Output is correct
40 Correct 3928 ms 649392 KB Output is correct
41 Correct 279 ms 608976 KB Output is correct
42 Correct 321 ms 617156 KB Output is correct
43 Correct 465 ms 649924 KB Output is correct
44 Correct 477 ms 652336 KB Output is correct
45 Correct 305 ms 621236 KB Output is correct
46 Correct 302 ms 620992 KB Output is correct
47 Correct 496 ms 647848 KB Output is correct
48 Correct 512 ms 648772 KB Output is correct
49 Correct 164 ms 591792 KB Output is correct
50 Correct 158 ms 591440 KB Output is correct
51 Correct 152 ms 590164 KB Output is correct
52 Correct 148 ms 590100 KB Output is correct
53 Correct 159 ms 590600 KB Output is correct
54 Correct 170 ms 590420 KB Output is correct
55 Correct 158 ms 590420 KB Output is correct
56 Correct 163 ms 590872 KB Output is correct
57 Correct 165 ms 590420 KB Output is correct
58 Correct 181 ms 590144 KB Output is correct
59 Correct 160 ms 590160 KB Output is correct
60 Correct 155 ms 590228 KB Output is correct
61 Correct 1044 ms 696284 KB Output is correct
62 Correct 2182 ms 829776 KB Output is correct
63 Correct 2071 ms 830780 KB Output is correct
64 Correct 2055 ms 830776 KB Output is correct
65 Correct 532 ms 620372 KB Output is correct
66 Correct 900 ms 647824 KB Output is correct
67 Correct 953 ms 651596 KB Output is correct
68 Correct 162 ms 590164 KB Output is correct
69 Correct 160 ms 590164 KB Output is correct
70 Correct 173 ms 590168 KB Output is correct
71 Correct 163 ms 590164 KB Output is correct
72 Correct 161 ms 590160 KB Output is correct
73 Execution timed out 5067 ms 1044024 KB Time limit exceeded
74 Halted 0 ms 0 KB -