#include <bits/stdc++.h>
using namespace std;
int query(string q);
typedef pair<int, int> ii;
int p[28] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27};
ii cnt2[28];
int cnt[28];
string guess(int n, int s){
for(char i = 'a'; i < 'a'+s; i ++){
string temp = "";
for(int j = 0; j < n; j ++){
temp += i;
}
cnt[i-'a'] = query(temp);
cnt2[i-'a'] = ii(cnt[i-'a'], i-'a');
}
sort(cnt2, cnt2+s);
//reverse(cnt2, cnt2+s);
for(int i = 0; i < s; i ++){
p[cnt2[i].second] = i;
}
//random_shuffle(p, p+s);
//random_shuffle(p, p+s);
string temp = "";
int cntMatch = 0;
for(int i = 0; i < s; i ++){
int indx = 0;
int j = 0;
while(j < cnt[p[i]]){
string temp2 = temp;
if(indx == 0){
temp2 = (char)('a'+p[i]) + temp;
}else{
temp2 = temp2.substr(0, indx) + (char)('a'+p[i]) + temp2.substr(indx);
}
//printf("%d: %s %s\n", j, temp.c_str(), temp2.c_str());
int res = query(temp2);
if(res > cntMatch){
temp = temp2;
cntMatch = res;
j ++;
}
indx ++;
}
}
return temp;
}
