陈年老题解

#include<bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
int s=n;
int sum=0,cnt=0,c=0;
sum=n%10;
n/=10;
cnt=n%10;
n/=10;
c=n%10;
n/=10;
if((sumsumsum)+(cntcntcnt)+(ccc)==s)
cout<<"YES";
else
cout<<"NO";
return 0;
}