题解

#include<bits/stdc++.h>
using namespace std;
int z;
int main(){
    int n,m;
    cin>>n>>m;
    while(n>=10){
        n/=10;
        z++;
    }
    if(z+1==m){
        cout<<"Yes";
    }
    else{
        cout<<"No";
    }
	return 0;
}