#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)

typedef vector<int> vi;

bool check(vi _a, int p)
{
	vi a(3);
	rep(i, 0, 3) a[i] = _a[i] % p;
	
	//rep(i, 0, 3) cout << a[i] << " ";
	//cout << endl;

	if (a[0] == a[1]) return false;
	if (a[0] == a[2]) return false;
	if (a[1] == a[2]) return false;

	int _max = max(a[0], max(a[1], a[2]));
	int _min = min(a[0], min(a[1], a[2]));

	if (_max == a[1]) return true;
	if (_min == a[1]) return true;
	return false;
}

int main()
{
	vi a(3);
	rep(i, 0, 3) cin >> a[i];

	int m = 0;
	rep(i, 0, 3) m = max(m, a[i]);
	int c = 0;
	rep(i, 1, m + 1) if (check(a, i)) c++;

	if (check(a, m + 1))
		cout << "INF" << endl;
	else
		cout << c << endl;
}