A = list(input().split("."))
B = list(input().split("."))

for i in range(3) :
    A[i] = int(A[i])
    B[i] = int(B[i])
if (A[0] >= B[0]) and (A[1] >= B[1]) and (A[2] >= B[2]) :
    print("YES")
else :
    print("NO")