### 原题目：

原题链接：https://www.patest.cn/contests/pat-a-practise/1124

1124. Raffle for Weibo Followers (20)

John got a full mark on PAT. He was so happy that he decided to hold a raffle（抽奖） for his followers on Weibo – that is, he would select winners from every N followers who forwarded his post, and give away gifts. Now you are supposed to help him generate the list of winners.

Input Specification:

Each input file contains one test case. For each case, the first line gives three positive integers M (<= 1000), N and S, being the total number of forwards, the skip number of winners, and the index of the first winner (the indices start from 1). Then M lines follow, each gives the nickname (a nonempty string of no more than 20 characters, with no white space or return) of a follower who has forwarded John’s post.

Note: it is possible that someone would forward more than once, but no one can win more than once. Hence if the current candidate of a winner has won before, we must skip him/her and consider the next one.

Output Specification:

For each case, print the list of winners in the same order as in the input, each nickname occupies a line. If there is no winner yet, print “Keep going…” instead.

Sample Input 1:

9 3 2

Imgonnawin!

PickMe

PickMeMeMeee

LookHere

Imgonnawin!

TryAgainAgain

TryAgainAgain

Imgonnawin!

TryAgainAgainSample Output 1:

PickMe

Imgonnawin!

TryAgainAgainSample Input 2:

2 3 5

Imgonnawin!

PickMeSample Output 2:

Keep going…

### 题目大意

输入M（粉丝数）、N（每N个人一个），S（开始位置，起始点为1）。找出获得奖的人，对于已获得的人，跳过处理。

### 代码

1 | /* |