#include<iostream> using namespace std; int main() { char a[150],b[150]; cin>>a>>b; int al,bl; al = 0; int i=0; while(a[i] != '\0'){ al++; i++; } bl = 0; i = 0; while(b[i] != '\0'){ bl++; i++; } if(al==bl){ cout<<"yes"; } else{ cout<<"no"; } return 0; }