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

int cnt[4000005];

int main(){
  int a, b, c; cin >> a >> b >> c;
  if(gcd(a,gcd(b,c))>1){
    cout << "INF" << endl;
    return 0;
  }
  int n = 1;
  if(gcd(a,b)==1){
    n = a*b;
  }else if(gcd(b,c)==1){
    n = b*c;
  }else{
    n = c*a;
  }
  for(int i = 0; i <= n/a; i++){
    for(int j = 0; j <= (n-i*a)/b; j++){
      for(int k = 0; k <= (n-i*a-j*b)/c; k++){
        cnt[i*a+j*b+k*c]++;
      }
    }
  }
  int ans = 0;
  for(int i = 1; i < n; i++){
    if(cnt[i]==0) ans++;
  }
  cout << ans << endl;
  return 0;
}