#include <bits/stdc++.h>
using namespace std;
long long x, y, a[4];
signed main() {
  scanf("%lld%lld%lld", &a[1], &a[2], &a[3]);
  printf("First\n");
  fflush(stdout);
  printf("100000000000\n");
  fflush(stdout);
  scanf("%lld", &x);
  a[x] += 1e11;
  if (x == 0) return 0;
  printf("%lld\n", a[x] * 3 - a[1] - a[2] - a[3]);
  fflush(stdout);
  scanf("%lld", &y);
  a[y] += a[x] * 3 - a[1] - a[2] - a[3];
  if (y == 0) return 0;
  printf("%lld\n", a[x] - a[6 - x - y]);
  fflush(stdout);
  scanf("%lld", &x);
  return 0;
}
