Submission #16490

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Source Code Expand

#include"animals.h"
#include<vector>

#define rep(i,n) for(int i=0;i<(n);i++)

using namespace std;

int n;
vector<int> G[1000];

void init(int n,int E[][2]){
	::n=n;
	rep(i,n-1){
		int u=E[i][0],v=E[i][1];
		::G[u].push_back(v);
		::G[v].push_back(u);
	}
}

bool vis[1000];
int dfs(int u,int pre){
	vis[u]=true;

	int res=1;
	rep(i,G[u].size()){
		int v=G[u][i];
		if(v!=pre) res+=dfs(v,u);
	}
	return res;
}

int query(int v0){
	G[v0].clear();
	rep(u,n) rep(i,G[u].size()) {
		int v=G[u][i];
		if(v==v0){
			G[u].erase(G[u].begin()+i);
			break;
		}
	}

	rep(u,n) vis[u]=false;
	int res=0;
	rep(u,n) if(!vis[u]) res=max(res,dfs(u,-1));
	return res;
}

Submission Info

Compile Error

./grader.cpp: In function ‘int main()’:
./grader.cpp:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result
./grader.cpp:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result
./grader.cpp:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result

Judge Result