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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin>>n;
  7.     int d;
  8.     int k=0;
  9.     while(n > 0) {
  10.         d=n % 10;
  11.         n/=10;
  12.         if(d==7) k++;
  13.     } 
  14.     if(k>0) cout<<"YES";
  15.     else cout<<"NO";
  16.     return 0;
  17. }
  18.  
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
17
stdout 
YES
https://ideone.com/zAqbqD
language:
C++ (gcc 8.3)
created:
10 days ago
visibility:
public

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