[Python] ABC016 B

問題

B – A±B Problem

回答

A, B, C = map(int, input().split())

sum_ab = A + B
diff_ab = A - B

if sum_ab == C and diff_ab == C:
    print('?')
elif sum_ab == C:
    print('+')
elif diff_ab == C:
    print('-')
else:
    print('!')