#include <bits/stdc++.h>
using namespace std;
int main() {
  long long a, b, c, x;
  cin >> a >> b >> c;
  cout << "First" << endl;
  cout << max(a, max(b, c)) << endl;
  cin >> x;
  if (x == 1) {
    a += max(a, max(b, c));
    cout << 2 * a - b - c << endl;
    cin >> x;
    if (x == 2) {
      b += 2 * a - b - c;
      cout << b - a << endl;
      return 0;
    }
    c += 2 * a - b - c;
    cout << c - a << endl;
    return 0;
  }
  if (x == 2) {
    b += max(a, max(b, c));
    cout << 2 * b - a - c << endl;
    cin >> x;
    if (x == 1) {
      a += 2 * b - a - c;
      cout << a - b << endl;
      return 0;
    }
    c += 2 * b - a - c;
    cout << c - b << endl;
    return 0;
  }
  c += max(a, max(b, c));
  cout << 2 * c - b - a << endl;
  cin >> x;
  if (x == 2) {
    b += 2 * c - b - a;
    cout << b - c << endl;
    return 0;
  }
  a += 2 * c - b - a;
  cout << a - c << endl;
  return 0;
}
