🐣 문제

링크 : https://www.acmicpc.net/problem/5598

🐥 코드

#include <iostream>
#include <string> 
#include <vector>
using namespace std;


int main(){	
  string s; 
  cin >> s;

  for(char c : s){
    if(c == 'A' || c == 'B' || c == 'C'){
      c = int(c) + 23;
    }
    else c = int(c) - 3;
    cout << c;
  }
  
  return 0;
}