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답안 #1046010

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1046010 2024-08-06T08:59:19 Z vjudge1 Rectangles (IOI19_rect) C++17
72 / 100
 5000 ms 914796 KB 
#include "rect.h"
#include<bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
#define HAS(a,b) (lower_bound(all(a),b)!=upper_bound(all(a),b))
vector<short>pos[2501][2501],pos2[2501][2501],stb[2501][20];
vector<short> operator & (const vector<short>&a,const vector<short>&b){
    vector<short>c;
    if(a.size()<b.size()){
        for(auto i:a)
            if(HAS(b,i))
                c.push_back(i);
    } else for(auto i:b)
        if(HAS(a,i))
            c.push_back(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(HAS(stb[beg][i],r2))
            beg+=1<<i;
    return beg-1;
}
int cnt(int l,int r,int col){
    int x=31-__builtin_clz(r-l+1);
    vector<short>k=stb[l][x]&stb[r-(1<<x)+1][x];
    return upper_bound(k.begin(),k.end(),res[CC++])-k.begin();
}
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].push_back(stk.top()-1),stk.pop();
            if(stk.size()){
                pos[i][j+1].push_back(stk.top()-1);
                if(a[i][stk.top()]==a[i][j])
                    stk.pop();
            }
            stk.push(j);
            if(pos[i][j+1].size())
                pos[i][j+1].erase(pos[i][j+1].begin());
        }
    }
    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].push_back(stk.top()-1),stk.pop(); 
            if(stk.size()){
                pos2[i+1][j].push_back(stk.top()-1);
                if(a[stk.top()][j]==a[i][j])
                    stk.pop();
            }
            stk.push(i);
            if(pos2[i+1][j].size())
                pos2[i+1][j].erase(pos2[i+1][j].begin());
        }
    }
    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:81:50: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   81 |                 stb[i][j]=stb[i][j-1]&stb[i+(1<<j-1)][j-1];
      |                                                 ~^~
rect.cpp:90:46: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   90 |             stb[i][j]=stb[i][j-1]&stb[i+(1<<j-1)][j-1];
      |                                             ~^~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 295252 KB Output is correct
2 Correct 41 ms 295460 KB Output is correct
3 Correct 46 ms 295252 KB Output is correct
4 Correct 41 ms 295248 KB Output is correct
5 Correct 47 ms 295252 KB Output is correct
6 Correct 40 ms 295260 KB Output is correct
7 Correct 40 ms 295248 KB Output is correct
8 Correct 48 ms 295248 KB Output is correct
9 Correct 41 ms 295260 KB Output is correct
10 Correct 42 ms 295356 KB Output is correct
11 Correct 43 ms 295508 KB Output is correct
12 Correct 47 ms 295464 KB Output is correct
13 Correct 41 ms 295252 KB Output is correct
14 Correct 42 ms 295300 KB Output is correct
15 Correct 40 ms 295248 KB Output is correct
16 Correct 39 ms 295236 KB Output is correct
17 Correct 42 ms 295244 KB Output is correct
18 Correct 41 ms 295256 KB Output is correct
19 Correct 45 ms 295252 KB Output is correct
20 Correct 40 ms 295248 KB Output is correct
21 Correct 40 ms 295192 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 295252 KB Output is correct
2 Correct 41 ms 295460 KB Output is correct
3 Correct 46 ms 295252 KB Output is correct
4 Correct 41 ms 295248 KB Output is correct
5 Correct 47 ms 295252 KB Output is correct
6 Correct 40 ms 295260 KB Output is correct
7 Correct 40 ms 295248 KB Output is correct
8 Correct 48 ms 295248 KB Output is correct
9 Correct 41 ms 295260 KB Output is correct
10 Correct 42 ms 295356 KB Output is correct
11 Correct 43 ms 295508 KB Output is correct
12 Correct 47 ms 295464 KB Output is correct
13 Correct 41 ms 295252 KB Output is correct
14 Correct 42 ms 295300 KB Output is correct
15 Correct 40 ms 295248 KB Output is correct
16 Correct 39 ms 295236 KB Output is correct
17 Correct 42 ms 295244 KB Output is correct
18 Correct 41 ms 295256 KB Output is correct
19 Correct 45 ms 295252 KB Output is correct
20 Correct 40 ms 295248 KB Output is correct
21 Correct 40 ms 295192 KB Output is correct
22 Correct 43 ms 296032 KB Output is correct
23 Correct 47 ms 296056 KB Output is correct
24 Correct 43 ms 295832 KB Output is correct
25 Correct 42 ms 295764 KB Output is correct
26 Correct 43 ms 296016 KB Output is correct
27 Correct 43 ms 296024 KB Output is correct
28 Correct 43 ms 296024 KB Output is correct
29 Correct 43 ms 295468 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 295252 KB Output is correct
2 Correct 41 ms 295460 KB Output is correct
3 Correct 46 ms 295252 KB Output is correct
4 Correct 41 ms 295248 KB Output is correct
5 Correct 47 ms 295252 KB Output is correct
6 Correct 40 ms 295260 KB Output is correct
7 Correct 40 ms 295248 KB Output is correct
8 Correct 48 ms 295248 KB Output is correct
9 Correct 41 ms 295260 KB Output is correct
10 Correct 42 ms 295356 KB Output is correct
11 Correct 43 ms 295508 KB Output is correct
12 Correct 47 ms 295464 KB Output is correct
13 Correct 41 ms 295252 KB Output is correct
14 Correct 42 ms 295300 KB Output is correct
15 Correct 40 ms 295248 KB Output is correct
16 Correct 39 ms 295236 KB Output is correct
17 Correct 43 ms 296032 KB Output is correct
18 Correct 47 ms 296056 KB Output is correct
19 Correct 43 ms 295832 KB Output is correct
20 Correct 42 ms 295764 KB Output is correct
21 Correct 43 ms 296016 KB Output is correct
22 Correct 43 ms 296024 KB Output is correct
23 Correct 43 ms 296024 KB Output is correct
24 Correct 43 ms 295468 KB Output is correct
25 Correct 42 ms 295244 KB Output is correct
26 Correct 41 ms 295256 KB Output is correct
27 Correct 45 ms 295252 KB Output is correct
28 Correct 40 ms 295248 KB Output is correct
29 Correct 40 ms 295192 KB Output is correct
30 Correct 70 ms 299464 KB Output is correct
31 Correct 64 ms 299472 KB Output is correct
32 Correct 64 ms 299468 KB Output is correct
33 Correct 52 ms 298520 KB Output is correct
34 Correct 59 ms 299216 KB Output is correct
35 Correct 67 ms 299496 KB Output is correct
36 Correct 59 ms 299476 KB Output is correct
37 Correct 59 ms 299340 KB Output is correct

Subtask #4
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 295252 KB Output is correct
2 Correct 41 ms 295460 KB Output is correct
3 Correct 46 ms 295252 KB Output is correct
4 Correct 41 ms 295248 KB Output is correct
5 Correct 47 ms 295252 KB Output is correct
6 Correct 40 ms 295260 KB Output is correct
7 Correct 40 ms 295248 KB Output is correct
8 Correct 48 ms 295248 KB Output is correct
9 Correct 41 ms 295260 KB Output is correct
10 Correct 42 ms 295356 KB Output is correct
11 Correct 43 ms 295508 KB Output is correct
12 Correct 47 ms 295464 KB Output is correct
13 Correct 41 ms 295252 KB Output is correct
14 Correct 42 ms 295300 KB Output is correct
15 Correct 40 ms 295248 KB Output is correct
16 Correct 39 ms 295236 KB Output is correct
17 Correct 43 ms 296032 KB Output is correct
18 Correct 47 ms 296056 KB Output is correct
19 Correct 43 ms 295832 KB Output is correct
20 Correct 42 ms 295764 KB Output is correct
21 Correct 43 ms 296016 KB Output is correct
22 Correct 43 ms 296024 KB Output is correct
23 Correct 43 ms 296024 KB Output is correct
24 Correct 43 ms 295468 KB Output is correct
25 Correct 70 ms 299464 KB Output is correct
26 Correct 64 ms 299472 KB Output is correct
27 Correct 64 ms 299468 KB Output is correct
28 Correct 52 ms 298520 KB Output is correct
29 Correct 59 ms 299216 KB Output is correct
30 Correct 67 ms 299496 KB Output is correct
31 Correct 59 ms 299476 KB Output is correct
32 Correct 59 ms 299340 KB Output is correct
33 Correct 42 ms 295244 KB Output is correct
34 Correct 41 ms 295256 KB Output is correct
35 Correct 45 ms 295252 KB Output is correct
36 Correct 40 ms 295248 KB Output is correct
37 Correct 40 ms 295192 KB Output is correct
38 Correct 199 ms 339136 KB Output is correct
39 Correct 193 ms 338720 KB Output is correct
40 Correct 218 ms 338888 KB Output is correct
41 Correct 186 ms 339572 KB Output is correct
42 Correct 408 ms 342976 KB Output is correct
43 Correct 408 ms 342608 KB Output is correct
44 Correct 395 ms 342956 KB Output is correct
45 Correct 362 ms 340928 KB Output is correct
46 Correct 184 ms 332992 KB Output is correct
47 Correct 200 ms 336068 KB Output is correct
48 Correct 311 ms 340916 KB Output is correct
49 Correct 299 ms 342960 KB Output is correct
50 Correct 166 ms 318916 KB Output is correct
51 Correct 188 ms 320524 KB Output is correct
52 Correct 325 ms 341800 KB Output is correct
53 Correct 310 ms 342256 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 42 ms 296540 KB Output is correct
2 Correct 42 ms 296284 KB Output is correct
3 Correct 40 ms 295516 KB Output is correct
4 Correct 41 ms 295116 KB Output is correct
5 Correct 41 ms 295616 KB Output is correct
6 Correct 42 ms 295760 KB Output is correct
7 Correct 48 ms 295764 KB Output is correct
8 Correct 41 ms 295668 KB Output is correct
9 Correct 49 ms 295764 KB Output is correct
10 Correct 40 ms 295256 KB Output is correct
11 Correct 41 ms 295504 KB Output is correct

Subtask #6
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 42 ms 295244 KB Output is correct
2 Correct 41 ms 295256 KB Output is correct
3 Correct 45 ms 295252 KB Output is correct
4 Correct 40 ms 295248 KB Output is correct
5 Correct 40 ms 295192 KB Output is correct
6 Correct 44 ms 295260 KB Output is correct
7 Correct 980 ms 520132 KB Output is correct
8 Correct 2165 ms 779644 KB Output is correct
9 Correct 2140 ms 781748 KB Output is correct
10 Correct 2188 ms 780728 KB Output is correct
11 Correct 475 ms 518412 KB Output is correct
12 Correct 930 ms 719408 KB Output is correct
13 Correct 1010 ms 747392 KB Output is correct

Subtask #7
0 / 28.0

# 결과 실행 시간 메모리 Grader output
1 Correct 40 ms 295252 KB Output is correct
2 Correct 41 ms 295460 KB Output is correct
3 Correct 46 ms 295252 KB Output is correct
4 Correct 41 ms 295248 KB Output is correct
5 Correct 47 ms 295252 KB Output is correct
6 Correct 40 ms 295260 KB Output is correct
7 Correct 40 ms 295248 KB Output is correct
8 Correct 48 ms 295248 KB Output is correct
9 Correct 41 ms 295260 KB Output is correct
10 Correct 42 ms 295356 KB Output is correct
11 Correct 43 ms 295508 KB Output is correct
12 Correct 47 ms 295464 KB Output is correct
13 Correct 41 ms 295252 KB Output is correct
14 Correct 42 ms 295300 KB Output is correct
15 Correct 40 ms 295248 KB Output is correct
16 Correct 39 ms 295236 KB Output is correct
17 Correct 43 ms 296032 KB Output is correct
18 Correct 47 ms 296056 KB Output is correct
19 Correct 43 ms 295832 KB Output is correct
20 Correct 42 ms 295764 KB Output is correct
21 Correct 43 ms 296016 KB Output is correct
22 Correct 43 ms 296024 KB Output is correct
23 Correct 43 ms 296024 KB Output is correct
24 Correct 43 ms 295468 KB Output is correct
25 Correct 70 ms 299464 KB Output is correct
26 Correct 64 ms 299472 KB Output is correct
27 Correct 64 ms 299468 KB Output is correct
28 Correct 52 ms 298520 KB Output is correct
29 Correct 59 ms 299216 KB Output is correct
30 Correct 67 ms 299496 KB Output is correct
31 Correct 59 ms 299476 KB Output is correct
32 Correct 59 ms 299340 KB Output is correct
33 Correct 199 ms 339136 KB Output is correct
34 Correct 193 ms 338720 KB Output is correct
35 Correct 218 ms 338888 KB Output is correct
36 Correct 186 ms 339572 KB Output is correct
37 Correct 408 ms 342976 KB Output is correct
38 Correct 408 ms 342608 KB Output is correct
39 Correct 395 ms 342956 KB Output is correct
40 Correct 362 ms 340928 KB Output is correct
41 Correct 184 ms 332992 KB Output is correct
42 Correct 200 ms 336068 KB Output is correct
43 Correct 311 ms 340916 KB Output is correct
44 Correct 299 ms 342960 KB Output is correct
45 Correct 166 ms 318916 KB Output is correct
46 Correct 188 ms 320524 KB Output is correct
47 Correct 325 ms 341800 KB Output is correct
48 Correct 310 ms 342256 KB Output is correct
49 Correct 42 ms 296540 KB Output is correct
50 Correct 42 ms 296284 KB Output is correct
51 Correct 40 ms 295516 KB Output is correct
52 Correct 41 ms 295116 KB Output is correct
53 Correct 41 ms 295616 KB Output is correct
54 Correct 42 ms 295760 KB Output is correct
55 Correct 48 ms 295764 KB Output is correct
56 Correct 41 ms 295668 KB Output is correct
57 Correct 49 ms 295764 KB Output is correct
58 Correct 40 ms 295256 KB Output is correct
59 Correct 41 ms 295504 KB Output is correct
60 Correct 44 ms 295260 KB Output is correct
61 Correct 980 ms 520132 KB Output is correct
62 Correct 2165 ms 779644 KB Output is correct
63 Correct 2140 ms 781748 KB Output is correct
64 Correct 2188 ms 780728 KB Output is correct
65 Correct 475 ms 518412 KB Output is correct
66 Correct 930 ms 719408 KB Output is correct
67 Correct 1010 ms 747392 KB Output is correct
68 Correct 42 ms 295244 KB Output is correct
69 Correct 41 ms 295256 KB Output is correct
70 Correct 45 ms 295252 KB Output is correct
71 Correct 40 ms 295248 KB Output is correct
72 Correct 40 ms 295192 KB Output is correct
73 Correct 2230 ms 849568 KB Output is correct
74 Correct 2235 ms 860048 KB Output is correct
75 Correct 2299 ms 859408 KB Output is correct
76 Correct 2207 ms 868828 KB Output is correct
77 Execution timed out 5082 ms 914796 KB Time limit exceeded
78 Halted 0 ms 0 KB -