na, pa, ja = input().split()
nb, pb, jb = input().split()

ans = -1
if len(pa) > len(pb):
    ans = na
elif len(pa) < len(pb):
    ans = nb
else:
    for i in range(len(pa)):
        if int(pa[i]) > int(pb[i]):
            ans = na
            break
        elif int(pa[i]) < int(pb[i]):
            ans = nb
            break

print(ans)