A = input()
B = input()
N = max(len(A), len(B))+1

A = str(A).zfill(N)
B = str(B).zfill(N)
A = A[::-1]
B = B[::-1]
# print(A)
if A == "0" and B == "0":
    print("0")
    exit()
ans = []
kuri = 0
for i in range(N):
    now = int(A[i]) + int(B[i]) + kuri
    if now >= 10:
        kuri = 1
    else:
        kuri = 0
    ans.append(str(now%10))
sans_ = "".join(ans)
sans_ = sans_[::-1]
ans = []
first = True
for c in sans_:
    if first == True and c == '0':
        continue
    first = False
    ans.append(c)
print("".join(ans))