#include<bits/stdc++.h>
using namespace std;
int main(){
int a,b,v=0;
string s="",z="",d="";
cin>>a>>b;
int sum=a+b;
s=to_string(a);
z=to_string(b);
for(int i=0;i<s.length();i++){
if(s[i]=='0')
continue;
else
d+=s[i];
}
v=atoi(d.c_str());
cout<<v;
}
I2luY2x1ZGU8Yml0cy9zdGRjKysuaD4KdXNpbmcgbmFtZXNwYWNlIHN0ZDsKaW50IG1haW4oKXsKCWludCBhLGIsdj0wOwoJc3RyaW5nIHM9IiIsej0iIixkPSIiOwoJY2luPj5hPj5iOwoJaW50IHN1bT1hK2I7CglzPXRvX3N0cmluZyhhKTsKCXo9dG9fc3RyaW5nKGIpOwoJZm9yKGludCBpPTA7aTxzLmxlbmd0aCgpO2krKyl7CgkJaWYoc1tpXT09JzAnKQoJCWNvbnRpbnVlOwoJCWVsc2UKCQlkKz1zW2ldOwoJfQoJCSB2PWF0b2koZC5jX3N0cigpKTsKCWNvdXQ8PHY7Cn0=