BOJ 10491 - Quite a problem [C++]

문제

링크

풀이

#include <iostream>
#include <string>
using namespace std;
 
bool solve(string &s) {
  for (char &c : s) {
    if ('A' <= c && c <= 'Z') c = c - 'A' + 'a';
  }
 
  return s.find("problem") != string::npos;
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  string s;
  while (getline(cin, s)) cout << (solve(s) ? "yes" : "no") << "\n";
  return 0;
}