#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, a[1000];
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
  }
  long int answer = 0;
  for (int i = 0; i < (n - 1); i++) {
    if (a[i] == 1 && a[i + 1] == 2) {
      answer += 3;
    } else if (a[i] == 1 && a[i + 1] == 3) {
      answer += 4;
    } else if (a[i] == 2 && a[i + 1] == 1) {
      answer += 3;
    } else if (a[i] == 2 && a[i + 1] == 3) {
      cout << "Infinite";
      return 0;
    } else if (a[i] == 3 && a[i + 1] == 1) {
      answer += 4;
      if (i < n - 2 && a[i + 2] == 2) {
        answer -= 1;
      }
    } else if (a[i] == 3 && a[i + 1] == 2) {
      cout << "Infinite";
      return 0;
    }
  }
  cout << "Finite" << endl;
  cout << answer;
  return 0;
}
