Submission #3209616

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#define rep(i,j,n) for(int i=(j);i<(n);i++)
#define erep(i,j,n) for(int i=(j);i<=(n);i++)
#define all(i) i.begin(),i.end()
#define rall(i) i.rbegin(),i.rend()
#define INF 1e9
const int mod = 1e9+7;

typedef vector<int> vi;
typedef vector<string> vs;
typedef vector<vi> vvi;
typedef pair<int, int> pi;
typedef long long i64;

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);

  int a, b, c;
  cin >> a >> b >> c;
  if(a == b && a == c && !(a % 2)) {
    cout << -1 << endl;
    return 0;
  }

  int ans = 0;
  while(!(a % 2) && !(b % 2) && !(c % 2)) {
    int aa = b / 2 + c / 2;
    int bb = a / 2 + c / 2;
    c = a / 2 + b / 2;
    a = aa;
    b = bb;
    ans++;
  }
  cout << ans << endl;
}

Submission Info

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