Submission #995769

#	Time	Username	Problem	Language	Result	Execution time	Memory
995769		aaaaaarroz	Soccer Stadium (IOI23_soccer)	C++17	Compilation error	0 ms	0 KiB

soccer

#include <bits/stdc++.h>
using namespace std;
bool limites(int N, int i, int j){
	return i>=0&&i<N&&j>=0&&j<N;
}
int biggest_stadium(int N, vector<vector<int>> F){
	int empty_cells=0;
	pair<int,int>arbol;
	for(int i=0;i<N;i++){
		for(int j=0;j<N;j++){
			if(F[i][j]==0){
				empty_cells++;
			}	
		}
	}
	bool si=true;
	for(int i=0;i<N;i++){
		for(int j=0;j<N;j++){
			if(F[i][j]==1){
				continue;
			}
			queue<pair<int,int>>cola;
			int dx[]={1,0,-1,0};
			int dy[]={0,1,0,-1};
			vector<vector<int>>dist(N,vector<int>(N,-1));
			dist[i][j]=0;
			cola.push({i,j});
			while(!cola.empty()){
				int x=cola.front().first;
				int y=cola.front().second;
				cola.pop();
				for(int dir=0;dir<4;dir++){
					int posi=x;
					int posj=y;
					while(limites(N,posi,posj)&&F[posi][posj]==0){
						if(dist[posi][posj]==-1){
							dist[posi][posj]=dist[x][y]+1;
							cola.push({posi,posj});
							posi+=dx[dir];
							posj+=dy[dir];
						}
						else{
							break;
						}
					}
				}
			}
			for(int x=0;x<N;x++){
				for(int y=0;y<N;y++){
					if(F[x][y]==0&&(dist[x][y]>=3||dist[x][y]==-1)){
						si=false;
					}
				}
			}
			if(!si){
				break;
			}
		}
		if(!si){
			break;
		}
	}
	if(si){
		return empty_cells;
	}
	else{
		return 1;
	}
}
int main()
{
    int N;
	cin>>N;
    vector<std::vector<int>> F(N, vector<int>(N));
    for (int i = 0; i < N; i++)
    {
        for (int j = 0; j < N; j++)
        {
            cin>>F[i][j];
        }
    }

    int res = biggest_stadium(N, F);
    cout<<res<<"\n";
    return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cczqnPqS.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccOYRgKT.o:soccer.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status