BOJ 15151 - Incomplete Book [C++]

문제

링크

풀이

#include <iostream>
using namespace std;
 
void solve(void) {
  int k, d; cin >> k >> d;
 
  int ans = 0;
  while (d >= 0) d -= k * (1 << ans++);
  cout << ans - 1;
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  solve();
  return 0;
}