1124. Raffle for Weibo Followers (20) PAT 甲级&&1069. 微博转发抽奖(20) PAT乙级

#include<iostream>
#include<map>
#include<string>
#include<vector>

using namespace std;

map<string,int> count;
vector<string> v;
int m,n,s;

int main(){
string name;
cin>>m>>n>>s;
v.push_back("");
for(int i=0;i<m;i++){
cin>>name;
v.push_back(name);
}
if(s>m){
cout<<"Keep going..."<<endl;
}
else{
for(int i=s;i<=m;i=i+n){
while(count[v[i]]>=1){
i++;
}
count[v[i]]++;
cout<<v[i]<<endl;
}
}
}