void InitCost()
{
MinCost = new MinSegTree[N];
MinCost[0] = new MinSegTree(1);
MinCost[0].Set(0, 0);
UsedAtmost = new int[N];
for (int i = 1; i < N; i++)
{
int x = MinUsed[i], cost = N - x + x * (x + 1) / 2;
int atmost = MinUsed[i];
for (int bit = 1 << 14; bit > 0; bit >>= 1)
{
if ((x = atmost + bit) < N && x * (x + 1) / 2 <= cost)
{
atmost += bit;
}
}
UsedAtmost[i] = atmost;
MinCost[i] = new MinSegTree(atmost - MinUsed[i] + 1);
}
}
public void Solve()
{
int N = Reader.Int();
var table = new int[1][].Concat(Reader.IntTable(N - 1)).ToArray();
var seg = new MinSegTree(N, -1);
seg.Set(0, 0);
int grundy = 0;
for (int i = 1; i < N; i++)
{
int L = i - table[i][0], num = table[i][1];
int g = BinarySearchMax(0, N - 1, x => seg.Min(0, x) >= L);
seg.Set(g, i);
if (num % 2 == 1)
{
grundy ^= g;
}
}
Console.WriteLine(grundy == 0 ? "Second" : "First");
}
