#ù. 与众不同

    Type: Default 1000ms 256MiB

与众不同

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题目描述

为了方便你们签到我也不废话了,给你n个数,只有一个数的出现次数是奇数,

其余数的出现次数都是偶数,找到这个出现次数为奇数的数。

输入描述

第一行输入整数n,第二行输入n个整数,范围在long long以内

输出描述

输出出现次数为奇数的数

5
1 2 3 2 1
3
9
123 854 3489 854 123904 3489 123 3489 3489
123904

第七届SWPU-ACM老生预选赛

Not Attended
Status
Done
Rule
ACM/ICPC
Problem
187
Start at
2022-9-19 14:00
End at
2022-10-28 14:00
Duration
936 hour(s)
Host
Partic.
45