BOJ 26731 - Zagubiona litera [C++]

문제

링크

풀이

#include <iostream>
#include <string>
using namespace std;
 
char solve(void) {
  string s; cin >> s;
  for (char c='A'; c<='Z'; c++) {
    if (s.find(c) == string::npos) return c;
  }
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  cout << solve();
  return 0;
}