N,M=map(int,input().split())
A=list(map(int, input().split()))
B=list(map(int, input().split()))
if A==[1]:
    g1=0
    for i in range(M):
        g1^=B[i]
    if g1==0:
        print("Second")
    else:
        print("First")
    exit()
g1=0
for i in range(N):
    g1^=(A[i]-1)
if g1!=0:
    print("First")
else:
    print("Second")
    exit()