题解

#include<bits/stdc++.h>
#define ll long long                                                        //防伪标识
#define MAXN 1005
#define maxn 10005
#define MAXM 10000
#define maxm 1000005
using namespace std;
int n;
int main(){
	cin>>n;
	if(n%5 == 0){
		cout<<"Yes";
        return 0;
	}
	int q = 0;
	while(n){
		if(n%10 == 5){
			cout<<"Yes";
			return 0;
		}
		q++;
		n/=10;
	}
	cout<<"No";
	return 0;
}