| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 336923 | blue | Combo (IOI18_combo) | C++11 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "combo.h"
#include <iostream>
#include <string>
#include <vector>
using namespace std;
string guess_sequence(int N)
{
string res;
if(press("AB") >= 1)
{
res = (press("A") == 1 ? "A" : "B");
}
else
{
res = (press("X") == 1 ? "X" : "Y");
}
string query;
int query_res;
vector<string> C;
for(string t: {"A", "B", "X", "Y"}) if(t != res) C.push_back(t);
while(res.size() != N-1)
{
query.clear();
query += res + C[0];
query += res + C[1] + C[0];
query += res + C[1] + C[1];
query += res + C[1] + C[2];
query_res = press(query);
if(query_res == res.size())
{
res += C[2];
}
else if(query_res == res.size() + 1)
{
res += C[0];
}
else
{
res += C[1];
}
}
if(press(res + C[0] + res + C[1]) == res.size())
{
res += C[2];
}
else
{
if(press(res + C[0]) == pos + 1)
{
res += C[0];
}
else
{
res += C[1];
}
}
return res;
}