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

inline bool isK(const int &a, const int &b, const int &c) {
  if ((a != c) && ((a > b && c > b) or (a < b && c < b))) return 1;
  return 0;
}

int a, b, c;
void input() { cin >> a >> b >> c; }

void solve() {
  if (isK(a, b, c)) {
    cout << "INF" << endl;
    return;
  }
  int ans = 0;
  rep(i, 3, 1001) ans += isK(a % i, b % i, c % i);
  cout << ans << endl;
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  input();
  solve();
}