Submission #17612755

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int fa[200005],a[200005],b[200005];
long long s1[200005],s2[200005];
int find(int x){return fa[x]==x?x:fa[x]=find(fa[x]);}
int main()
{
    int n,m,x,y;
    scanf("%d%d",&n,&m);
    for(int i=1;i<=n;i++)fa[i]=i,scanf("%d",&a[i]);
    for(int i=1;i<=n;i++)scanf("%d",&b[i]);
    for(int i=1;i<=m;i++)
    {
        scanf("%d%d",&x,&y);
        x=find(x),y=find(y);
        fa[x]=y;
    }
    for(int i=1;i<=n;i++)
    {
        int t=find(i);
        s1[t]+=a[i],s2[t]+=b[i];
    }
    for(int i=1;i<=n;i++)
        if(fa[i]==i)
        {
            if(s1[i]!=s2[i]){puts("No");return 0;}
        }
    puts("Yes");
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:9:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    9 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
./Main.cpp:10:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   10 |     for(int i=1;i<=n;i++)fa[i]=i,scanf("%d",&a[i]);
      |                                  ~~~~~^~~~~~~~~~~~
./Main.cpp:11:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   11 |     for(int i=1;i<=n;i++)scanf("%d",&b[i]);
      |                          ~~~~~^~~~~~~~~~~~
./Main.cpp:14:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   14 |         scanf("%d%d",&x,&y);
      |         ~~~~~^~~~~~~~~~~~~~

Judge Result