n = int(input())
a = list(map(int, input().split()))
a.sort()

xor = 0
current_length = 1

for i in range(1, n):
    if a[i] == a[i-1] + 1:
        current_length += 1
    else:
        # Calculate grundy for current group
        grundy = 1 if (current_length % 3 == 0) else 0
        xor ^= grundy
        current_length = 1

# Process the last group
grundy = 1 if (current_length % 3 == 0) else 0
xor ^= grundy

print("First" if xor != 0 else "Second")