Submission #2165305

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Source Code Expand

#include <bits/stdc++.h>

#define int long long

#define REP(i,n) for(int i=0;i<n;i++)
#define FOR(i,m,n) for(int i=m;i<n;i++)
#define FORR(i,m,n) for(int i=m;i>=n;i--)
#define pb(x) push_back(x) 
#define SORT(x) sort((x).begin(),(x).end())
#define INF 999999999999

using namespace std;

int32_t main(){
	int a, b, c;
	cin >> a >> b >> c;
	
	if(a%2 || b%2 || c%2){
		cout << 0 << endl;
		return 0;
	}
	
	if(a==b && b==c){
		cout << -1 << endl;
		return 0;
	}
	
	for(int i=1; i<INF; i++){
		int x, y, z;
		x=a/2;
		y=b/2;
		z=c/2;
		
		a=y+z;
		b=x+z;
		c=x+y;

		if(a%2 || b%2 || c%2){
			cout << i << endl;
			return 0;
		}
	}
}

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