#include<iostream> using namespace std; int main(){ char a[151],b[151]; cin>>a>>b; int ai=0,bi=0; ai=0; int i=0; int o=0; while(a[i]!='\0'){ ai++; i++; } while(b[o]!='\0'){ bi++; o++; } if(ai==bi){ cout<<"yes"; }else{ cout<<"no"; } }