#include <iostream> #include <string> using namespace std; int main() { int n; cin >> n; string s; cin >> s; for(unsigned char ch : s) { // 防溢出 ch -= 'a'; ch += n; ch %= 26; ch += 'a'; cout << (char)ch; } return 0; }
#include <iostream> #include <string> using namespace std; int main() { int n; cin >> n; string s; cin >> s; for(unsigned char ch : s) { // 防溢出 ch -= 'a'; ch += n; ch %= 26; ch += 'a'; cout << (char)ch; } return 0; }