#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int ask(long long x) {
  cout << x << '\n';
  fflush(stdout);
  int res;
  cin >> res;
  return res;
}
int main() {
  long long a, b, c;
  cin >> a >> b >> c;
  vector<pair<long long, long long>> x = {{a, 1}, {b, 2}, {c, 3}};
  cout << "First\n";
  fflush(stdout);
  sort((x).begin(), (x).end());
  long long to = 2 * x[2].first - x[1].first - x[0].first;
  int res = ask(to);
  if (res == x[0].second) {
    ask(x[2].first - x[1].first);
  } else if (res == x[1].second) {
    ask(x[2].first - x[0].first);
  } else {
    x[2].first += to;
    long long to = 2 * x[2].first - x[1].first - x[0].first;
    int res = ask(to);
    if (res == x[0].second) {
      ask(x[2].first - x[1].first);
    } else if (res == x[1].second) {
      ask(x[2].first - x[0].first);
    }
  }
}
