#include <iostream>
using namespace std;
int main() {
    freopen("solonhon.inp","r",stdin);
    freopen("solonhon.out","w",stdout);
    string a,b;
    cin >> a >> b;
    string A="",B="";
    for (char i:a) {
        A=i+A;
    }
    for (char i:b) {
        B=i+B;
    }
    
    int nA = A.size(), nB = B.size();
    while (nA<nB) {
        A = '0'+A;
        nA = A.size();
    }
    while (nA>nB) {
        B='0'+B;
        nB = B.size();
    }
    for (int i=0; i<A.size(); i++) {
        if (A[i]>B[i]) {
            cout << A;
            return 0;
        } else {
            if (A[i]<B[i]) {
                cout << B;
                return 0;
            }
        }
    }
}