# include<iostream> using namespace std; int main(){ char a[151],b[151]; cin>>a>>b; int len_a=0,len_b=0; while(a[len_a]!="/0"){ len_a++; } while(b[len_b]!="/0"){ len_b++; } if(len_a==len_b){ cout<<"yes"; } else { cout<<"no"; } return 0; }