BOJ 35247 - Itsy Bits [C++]

문제

링크

풀이

#include <iostream>
using namespace std;
 
void solve(void) {
  long long n; cin >> n;
 
  int b = 1;
  while (n >>= 1) b++;
 
  int ans = 1;
  while (ans < b) ans <<= 1;
  cout << ans << " bit" << (ans == 1 ? "" : "s");
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}