^^

#include<fstream>
#include<string>
#include<map>
#include<algorithm>
using namespace std;

int main() {
    string start, finish;
    ifstream fileIn;
    ofstream fileOut;
    fileIn.open("input.txt");
    fileOut.open("output.txt");
    getline(fileIn, start);
    getline(fileIn, finish);
    map<char, char> symbs;
    for (size_t i = 0; i < start.size(); ++i) {
        symbs[start[i]] = finish[i];
    }
    string line;
    while (getline(fileIn, line)) {
        int cnter = 0;
        for (char x : line) {
            if (symbs.find(x) != symbs.end()) {
                line[cnter] = symbs[x];
            }
            ++cnter;
        }
        fileOut << line <<"\n";
    }
    fileIn.close();
    fileOut.close();
}