제출 #1006950

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1006950		Abito	축구 경기장 (IOI23_soccer)	C++17	0 / 100	4545 ms	2396 KiB

soccer

#include "soccer.h"
#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
using namespace std;
const int N=2005;
int mvx[]={1,0,-1,0},mvy[]={0,1,0,-1},a[N][N],p1[N][N],p2[N][N];
int biggest_stadium(int n, std::vector<std::vector<int>> f)
{
    bool ok=true;
    for (int i=1;i<=n;i++) for (int j=1;j<=n;j++) a[i][j]=f[i-1][j-1];
    for (int i=1;i<=n;i++) for (int j=1;j<=n;j++) p1[i][j]=p1[i][j-1]+a[i][j];
    for (int j=1;j<=n;j++) for (int i=1;i<=n;i++) p2[i][j]=p2[i-1][j]+a[i][j];
    vector<pair<int,int>> v;
    for (int i=1;i<=n;i++) for (int j=1;j<=n;j++) v.pb({i,j});
    int ans=0;
    for (int mask=1;mask<(1<<v.size());mask++){
        vector<pair<int,int>> b;
        for (int i=0;i<v.size();i++) if (mask&(1<<i)) b.pb(v[i]);
        bool ok=true;
        for (auto u:b) ok&=(a[u.F][u.S]==0);
        if (!ok) continue;
        for (auto u:b){
            for (auto v:b){
                if (u==v) continue;
                int x1=p1[u.F][max(u.S,v.S)]-p1[u.F][min(u.S,v.S)-1]+p2[v.S][max(u.F,v.F)]-p2[v.S][min(u.F,v.F)-1];
                int x2=p1[v.F][max(u.S,v.S)]-p1[v.F][min(u.S,v.S)-1]+p2[u.S][max(u.F,v.F)]-p2[u.S][min(u.F,v.F)-1];
                ok&=(x1==0 || x2==0);
            }
        }
        if (ok) ans=max(ans,(int)b.size());
    }return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

soccer.cpp: In function 'int biggest_stadium(int, std::vector<std::vector<int> >)':
soccer.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |         for (int i=0;i<v.size();i++) if (mask&(1<<i)) b.pb(v[i]);
      |                      ~^~~~~~~~~
soccer.cpp:11:10: warning: unused variable 'ok' [-Wunused-variable]
   11 |     bool ok=true;
      |          ^~

• Subtask 0: 0 / 0
• Subtask 1: 0 / 6
• Subtask 2: 0 / 8
• Subtask 3: 0 / 22
• Subtask 4: 0 / 18
• Subtask 5: 0 / 16
• Subtask 6: 0 / 30