#include <bits/stdc++.h>

using namespace std;

bool check(int a, int b, int c) {
  if (a == b || b == c || c == a) return false;
  if ((a < b && b > c) || (a > b && b < c)) return true;
  return false;
}

int main(void) {
  int a[3];
  for (int i = 0; i < 3; i++) {
    cin >> a[i];
  }

  int n = max(a[0], max(a[1], a[2])), ans = 0;
  for (int i = 1; i <= n + 1; i++) {
    if (!check(a[0] % i, a[1] % i, a[2] % i)) continue;
    if (i == n + 1) ans = -1;
    else ans++;
  }

  if (ans == -1) cout << "INF\n";
  else cout << ans << endl;

  return 0;
}