#include <stdio.h>
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000000
	
int main(){
	
	int A,B,C;
	cin>>A>>B>>C;
	
	if(gcd(A,gcd(B,C))!=1){
		cout<<"INF"<<endl;
		return 0;
	}
	
	int ans = 0;
	vector<bool> dp(4000010,false);
	dp[0] = true;
	
	rep(i,dp.size()){
		if(i==0)continue;
		if(i>=A&&dp[i-A])dp[i] = true;
		if(i>=B&&dp[i-B])dp[i] = true;
		if(i>=C&&dp[i-C])dp[i] = true;
		if(dp[i])continue;
		ans++;
	}
	
	cout<<ans<<endl;
	
    return 0;
}