Submission #956569

#	Time	Username	Problem	Language	Result	Execution time	Memory
956569		ezzzay	Cop and Robber (BOI14_coprobber)	C++14	Compilation error	0 ms	0 KiB

coprobber

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

#define MAX_N 500
#define pb push_back
bool vis[MAX_N];
int x=1;
vector<int>v[MAX_N];
int c=0;
int start(int N, bool A[MAX_N][MAX_N]) {
	for(int i=0;i<N;i++){
		for(int j=0;j<N;j++){
			if(A[i][j]){
				v[i].pb(j);
			}
		}
	}
	for(int i=0;i<N;i++){
		if(v[i].size()==1){
			x=i;
			break;
		}
	}
	return x;
}
int h=0;
void dfs(int a, int p){
	vis[a]=1;
	if(a==c){
		h=p;
		return;
	}
	for(auto b:v[a]){
		if(vis[b]==0)dfs(b,p);
	}
}
int nextMove(int R) {
	c=R;
	memset(vis,0,sizeof vis);
	for(auto y:v[x]){
		dfs(y,y);
	}
	return h;
}
int main() {
    int N;
    cin >> N;
    bool A[MAX_N][MAX_N];
    for (int i = 0; i < N; i++) {
        for (int j = 0; j < N; j++) {
            cin >> A[i][j];
        }
    }
    int P = start(N,A);
    cout << P << endl;
    int R;
    cin >> R;
    while (true) {
        if (P == R) break;
        P = nextMove(R);
        cout << P << endl;
        if (P == R) break;
        cin >> R;
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc3MXQsC.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc4k3fZC.o:coprobber.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status