Submission #3269319

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Source Code Expand

N = int(input())
A = [int(input()) for _ in range(N)]

N_dict = {}
count = 0

for a in A:
    if a not in N_dict:
        count += 1
        N_dict[a] = 1
    elif N_dict[a] % 2 == 0:
        count += 1
        N_dict[a] += 1
    else:
        count -= 1
        N_dict[a] += 1

print(count)

Submission Info

Judge Result