oj.uz

Submission #1077299

# Submission time Handle Problem Language Result Execution time Memory
1077299 2024-08-27T05:02:11 Z emptypringlescan Soccer Stadium (IOI23_soccer) C++17
0 / 100
 4500 ms 9812 KB 
#include <bits/stdc++.h>
using namespace std;
int biggest_stadium(int n,vector<vector<int> > arr){
	int close[2][n][n];
	for(int j=0; j<n; j++){
		int prv=-1;
		for(int i=0; i<n; i++){
			if(arr[i][j]) prv=i;
			close[0][i][j]=prv;
		}
		prv=n;
		for(int i=n-1; i>=0; i--){
			if(arr[i][j]) prv=i;
			close[1][i][j]=prv;
		}
	}
	int yay[4][n+5][n+5];
	memset(yay,0,sizeof(yay));
	for(int i=0; i<n; i++){
		vector<pair<int,pair<int,int> > > mono;
		//area 0
		mono.push_back({n+5,{-1,0}});
		int val=0;
		for(int j=0; j<n; j++){
			while(!mono.empty()&&mono.back().first<close[0][i][j]){
				val-=mono.back().second.second;
				mono.pop_back();
			}
			int more=(close[0][i][j]+1)*(j-mono.back().second.first);
			val+=more;
			mono.push_back({close[0][i][j],{j,more}});
			yay[0][i+1][j+1]=val;
		}
		//area 1
		mono.clear();
		mono.push_back({n+5,{n,0}});
		val=0;
		for(int j=n-1; j>=0; j--){
			while(!mono.empty()&&mono.back().first<close[0][i][j]){
				val-=mono.back().second.second;
				mono.pop_back();
			}
			int more=(close[0][i][j]+1)*(mono.back().second.first-j);
			val+=more;
			mono.push_back({close[0][i][j],{j,more}});
			yay[1][i+1][j+1]=val;
		}
		//area 2
		mono.clear();
		mono.push_back({-1,{-1,0}});
		val=0;
		for(int j=0; j<n; j++){
			while(!mono.empty()&&mono.back().first>close[1][i][j]){
				val-=mono.back().second.second;
				mono.pop_back();
			}
			int more=(n-close[1][i][j])*(j-mono.back().second.first);
			val+=more;
			mono.push_back({close[1][i][j],{j,more}});
			yay[2][i+1][j+1]=val;
		}
		//area 3
		mono.clear();
		mono.push_back({-1,{n,0}});
		val=0;
		for(int j=n-1; j>=0; j--){
			while(!mono.empty()&&mono.back().first>close[1][i][j]){
				val-=mono.back().second.second;
				mono.pop_back();
			}
			int more=(n-close[1][i][j])*(mono.back().second.first-j);
			val+=more;
			mono.push_back({close[1][i][j],{j,more}});
			yay[3][i+1][j+1]=val;
		}
	}
	int pref[n+1][n+1];
	memset(pref,0,sizeof(pref));
	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			pref[i+1][j+1]=pref[i+1][j]+pref[i][j+1]-pref[i][j]+arr[i][j];
		}
	}
	int ans=0;
	for(int a=0; a<n; a++){
		for(int b=0; b<n; b++){
			for(int c=0; c<=a; c++){
				for(int d=0; d<=b; d++){
					if(pref[a+1][b+1]-pref[a+1][d]-pref[c][b+1]+pref[c][d]) continue;
					ans=max(ans,n*n-yay[0][c][b+1]-yay[1][a+1][b+2]-yay[2][c+1][d]-yay[3][a+2][d+1]);
				}
			}
		}
	}
	return ans;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB ok

Subtask #1
0.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 344 KB ok
6 Correct 0 ms 344 KB ok
7 Correct 38 ms 604 KB ok
8 Execution timed out 4558 ms 9812 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #2
0.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 1 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Incorrect 0 ms 348 KB wrong
8 Halted 0 ms 0 KB -

Subtask #3
0.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 1 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Incorrect 0 ms 348 KB wrong
9 Halted 0 ms 0 KB -

Subtask #4
0.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Incorrect 0 ms 348 KB wrong
11 Halted 0 ms 0 KB -

Subtask #5
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 1 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Incorrect 0 ms 348 KB wrong
11 Halted 0 ms 0 KB -

Subtask #6
0.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB ok
2 Correct 1 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 344 KB ok
7 Correct 0 ms 344 KB ok
8 Correct 38 ms 604 KB ok
9 Execution timed out 4558 ms 9812 KB Time limit exceeded
10 Halted 0 ms 0 KB -