#include<iostream> #include<cstdio> //scanf()\printf() #include<cstring> #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ char a[51],b[51]; cin>>a>>b; int s1=strlen(a); for(int i=0;i<s1;i++){ if(a[i]==b[i]) cout<<1; else cout<<0; } return 0; }