1124 Raffle for Weibo Followers （20 分）

1124 Raffle for Weibo Followers （20 分）

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!
TryAgainAgain

Sample Output 1:

PickMe
Imgonnawin!
TryAgainAgain

Sample Input 2:

2 3 5
Imgonnawin!
PickMe

Sample Output 2:

Keep going...

#include<iostream>
#include<vector>
#include<algorithm>
#include<queue>
#include<string>
#include<map>
#include<set>
#include<stack>
#include<string.h>
#include<cstdio>
#include<cmath>
using namespace std;


int main()
{
    int m,n,s;
    cin>>m>>n>>s;
    bool flag=true;
    vector<string>result;
    string temp;
    int win=s;
    int cnt=1;
    for(int i=1;i<m+1;i++)
    {
        cin>>temp;
        if(flag==false&&find(result.begin(),result.end(),temp)!=result.end())
            cnt--;
        if(cnt==win)
        {
            result.push_back(temp);
            win+=n;
            flag=false;
        }
        cnt++;

    }
    if(flag)
    {
        cout<<"Keep going...";
        return 0;
    }
    for(auto &temp:result)
        cout<<temp<<endl;
    return 0;
}