# include<iostream> # include<cstdio> # include<iomanip> # include<string> using namespace std; int main(){ int i=0; char s1[50],s2[50]; cin.getline(s1,50); cin.getline(s2,50); while(s1[i]!='\0'){ if(s1[i]==s2[i]) cout<<"1"; else cout<<"0"; i++; } return 0; }