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OI-codes/Luogu/P1079/P1079.cpp

20 lines
363 B
C++

#include <bits/stdc++.h>
using namespace std;
int main() {
string k, c;
int t = 0;
cin >> k >> c;
for (int i = 0; i < c.size(); i++) {
t = (k[i % k.size()] & 31) - 1;
if ((c[i] & 31) - t > 0) {
c[i] = c[i] - t;
} else {
c[i] = c[i] - t + 26;
}
}
cout << c << endl;
return 0;
}