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#include<cstdio>
#include<vector>
#include<iostream>
#include<algorithm>
using namespace std;
int n,m;
vector<string> v;
vector<string>::iterator it;
int main()
{
    string s;
    while(~scanf("%d%d",&n,&m)){
        v.clear();
        for(int i=0;i<n;i++){
            cin>>s;
            if(v.size()==0){
                v.push_back(s);
                puts("Internet");
            }
            else{
                bool ok=false;
                for(it=v.begin();it!=v.end();it++){
                    if(*it==s){
                        ok=true;break;
                    }
                }
                if(ok){
                    v.erase(it);
                    v.push_back(s);
                    puts("Cache");
                }
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