#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
typedef long long ll;
using namespace std;

int main() {
    string A, S;
    cin >> A >> S;
    
    rep(i, S.size()){
        if (S[i] >= '0' &&
            S[i] <= '9'){
            S[i] = A[S[i]- '0'];
        }
    }
    cout << S << endl;
    
    return 0;
}