a = input()
b = input()
d = 0; c = ""
if len(a) < len(b):
  a = a.zfill(len(b))
elif len(a) > len(b):
  b = b.zfill(len(a))
a = a[::-1]; b = b[::-1]
for i in range(len(b)):
  d += int(a[i]) + int(b[i])
  c += str(d % 10)
  d // = 10
if d: 
  c += str(d)
  print(c[::-1])
else: print(c[::-1])

1 -kod:
import sys
sys.stdin = open("input.txt", "r")
sys.stdout = open("output.txt", "w")
a, b = map(int, input().split())
print(a ^ b)
2 - kod:
import sys
sys.stdin = open("input.txt", "r")
sys.stdout = open("output.txt", "w")
a, b = map(int, input().split())
print(a + b)

for i in range(1, 6):
    print(i)

for i in range(3):
    print("Salom")

i = 1

while i <= 5:
    print(i)
    i += 1