Submission #1011061

#	Time	Username	Problem	Language	Result	Execution time	Memory
1011061		Dan4Life	Soccer Stadium (IOI23_soccer)	C++17	0 / 100	4598 ms	492 KiB

soccer

#include "soccer.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)

const int mxN = (int)1e3+10;
int n;
set<int> col[mxN];

int biggest_stadium(int N, vector<vector<int>> F)
{
	n = N; int ans = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(!F[i][j]) continue;
			col[j].insert(i);
		}
		col[i].insert(-1),col[i].insert(n);
	}
    for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			if(F[i][j]) continue;
			int k = i;
			while(k<n){
				if(F[k][j]) break;
				for(int l = i; l <= k; l++){
					int U = i, D = k;
					int tot = D-U+1;
					for(int m = j-1; m>=0; m--){
						auto itr2 = col[m].lower_bound(l);
						auto itr = itr2; itr--;
						U = max(U,*itr+1);
						D = min(D,*itr2-1);
						if(U>l or D<l) break;
						tot+=D-U+1;
					}
					U = i, D = k;
					for(int m = j+1; m < n; m++){
						auto itr2 = col[m].lower_bound(l);
						auto itr = itr2; itr--;
						U = max(U,*itr+1);
						D = min(D,*itr2-1);
						if(U>l or D<l) break;
						tot+=D-U+1;
					}
					ans = max(ans, tot);
				}
				k++;
			}
		}
	}
	return ans;
}

• 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