587 B | 573 chars
import sys
from math import sqrt, pi, sin, factorial
inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = " " : [*map(int,inp().split(x))]
mfi = lambda x = " " : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def solve():
# 승점: 2, 무승부: 1, 패배: 0
A = ii()
B = ii()
if A % 2 != B % 2:
p("Error")
return
if A >= 2 and B >= 2:
p("Undefined")
return
print(A // 2)
print(B // 2)
print(A % 2)
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()