BOJ 23722 - Marbles Tell Your Lucky Number [C++]

문제

링크

풀이

#include <iostream>
using namespace std;
 
inline int gcd(int a, int b) {
  return b ? gcd(b, a % b) : a;
}
 
bool solve(void) {
  int a1, a2, a3, a4; cin >> a1 >> a2 >> a3 >> a4;
  if (a1 == 0 && a2 == 0 && a3 == 0 && a4 == 0) return false;
 
  cout << gcd(gcd(a1, a2), gcd(a3, a4)) << "\n";
  return true;
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  while (solve());
  return 0;
}