#include <iostream>
#include <string>
int main() {

	std::string A, S;

	std::cin >> A >> S;

	for (int i = 0; i < S.size(); ++i) {
		if (S[i] >= '0' &&
			S[i] <= '9') {
			S[i] = A[S[i]- '0'];
		}
	}
	std::cout << S << std::endl;
	return 0;

}