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