#include "bits/stdc++.h"
#include <iostream>
#include <vector>
#include <string>

using namespace std;

std::string min_to_time(int m) {
  char str[10];
  sprintf(str,"%02d:%02d", m / 60, m % 60);
  return str;
}

std::string query(int m, int k) {
  cout << "at " << min_to_time(m) << " check " << k + 1 << endl;
  string str;
  cin >> str;
  return str;
}

int main() {
  int n;
  cin >> n;
  int tm = 0;
  vector<pair<string, int>> fst(n);
  vector<pair<string, int>> lst(n);
  vector<string> qq(n);
  vector<int> ans(n, -1);
  vector<int> dd(n);
  for (int i = 0; i < n; ++i) {
    fst[i] = lst[i] = make_pair(query(0, i), 0);
    qq[i] = fst[i].first;
    dd[i] = 48;
  }
  for (int tm = 1; tm < 1440; ++tm) {
    for (int i = 0; i < n; ++i) {
      if (fst[i].first == lst[i].first) {
        if (lst[i].second + dd[i] == tm) {
          --dd[i];
          fst[i] = lst[i];
          lst[i] = make_pair(query(tm, i), tm);
        }
      } else {
        if (ans[i] != -1) { continue; }
        if (tm < fst[i].second + 1440 / 2 + 1) { continue; }
        if (query(tm, i) == fst[i].first) {
          ans[i] = tm;
        }
      }
    }
  }
    cout << "answer\n";
  for (int i = 0; i < n; ++i) {
    if (ans[i] == -1) { ans[i] = 0; }
    if (qq[i] == "awake") {
      cout << min_to_time((ans[i] + 1440 / 2) % 1440) << "\n";
    } else {
      cout << min_to_time(ans[i]) << "\n";
    }
  }
  
  
  return 0;
}