Problem C. Candy Splitting

candy_splitting.py

import sys

T = int(sys.stdin.readline().strip())

for t in range(T):
        C = int(sys.stdin.readline().strip())
        num = sorted(int(n) for n in sys.stdin.readline().strip().split(' '))

        left = 0
        right = 0
        realsum = 0
        for n in num:
                right ^= n
                realsum += n

        cur = num.pop(0)
        realsum -= cur
        left = cur
        right ^= cur
        while left != right and len(num):
                cur = num.pop(0)
                if not len(num):
                        break
        #       print(cur, left, right, realsum)
                left ^= cur
                right ^= cur
                realsum -= cur

        print('Case #{0}: {1}'.format(t + 1, realsum if left == right else 'NO'))