提出 #1644142

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ソースコード 拡げる

#include <bits/stdc++.h>
#define FOR(i,k,n) for (int (i)=(k); (i)<(n); ++(i))
#define RFOR(i,k,n) for (int (i)=(n)-1; (i)>=(k); --(i))
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) RFOR(i,0,n)
#define pb push_back
#define mp make_pair
#define fst first
#define snd second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define debug(x) cerr << #x <<": "<<x<<endl
#define debug2(x,y) cerr << #x <<": "<< (x) <<", "<< #y <<": "<< (y) << endl
#define answer(x) cout << (x) <<endl
#define answer_fixed(x, p) cout << fixed << setprecision(p) << (x) << endl
using namespace std;

int main() {
  int N, S, T;
  cin >> N >> S >> T;
  int ans = 0;
  while(S <= T) {
    if(S == T) { break; }
    T /= 2;
    ans++;
  }
  if(S != T) { ans = -1; }
  answer(ans);
  return 0;
}

提出情報

ジャッジ結果