#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
bool bo[4003000] = { false };
long long gcd(long long a, long long b) {
	if (a % b == 0) {
		return (b);
	}
	else {
		return (gcd(b, a % b));
	}
}
int main() {
	int a, b, c;
	cin >> a >> b >> c;
	if (gcd(a, gcd(b, c)) != 1) {
		cout << "INF" << endl;
		return 0;
	}
	bo[0] = true;
	for (int i = 0; i <= 4000000; i++) {
		if (bo[i]) {
			bo[i + a] = true;
			bo[i + b] = true;
			bo[i + c] = true;
		}
	}
	int co = 0;
	for (int i = 0; i <= 4000000; i++) {
		if (!bo[i]) {
			co++;
		}
	}
	cout << co << endl;
}