提出 #47230638

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ソースコード 拡げる

#include<bits/stdc++.h>
using namespace std;
const int N=2e5+5;
int n,m,a[N],b[N],fa[N<<1];
int find(int x)
{
	return x==fa[x]?x:fa[x]=find(fa[x]);
}
signed main()
{
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n<<1;i++)fa[i]=i;
	for(int i=1;i<=m;i++)scanf("%d",a+i);
	for(int i=1;i<=m;i++)scanf("%d",b+i);
	for(int i=1;i<=m;i++)
	{
		if(find(a[i])==find(b[i]))
		{
			printf("No");
			return 0;
		}
		fa[find(a[i])]=find(b[i]+n),fa[find(b[i])]=find(a[i]+n);
	}
	printf("Yes");
	return 0;
}

提出情報

コンパイルエラー

Main.cpp: In function ‘int main()’:
Main.cpp:11:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   11 |         scanf("%d%d",&n,&m);
      |         ~~~~~^~~~~~~~~~~~~~
Main.cpp:13:35: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   13 |         for(int i=1;i<=m;i++)scanf("%d",a+i);
      |                              ~~~~~^~~~~~~~~~
Main.cpp:14:35: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   14 |         for(int i=1;i<=m;i++)scanf("%d",b+i);
      |                              ~~~~~^~~~~~~~~~

ジャッジ結果