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 <bits/stdc++.h>
#include "combo.h"
using namespace std;
string guess_sequence(int N) {
string p = "";
string s = "", a = "", b = "", c = "";
int coins = press("AB");
if(coins == 1)
{
coins = press("A");
if(coins == 1)
{
s += 'A';
a += 'B';
b += 'X';
c += 'Y';
}
else
{
s += 'B';
a += 'A';
b += 'X';
c += 'Y';
}
}
else
{
coins = press("X");
if(coins == 1)
{
s += 'X';
a += 'B';
b += 'A';
c += 'Y';
}
else
{
s += 'Y';
a += 'B';
b += 'X';
c += 'A';
}
}
for (int i = 0; i < N; i++)
{
p = s + a + a + s + a + b + s + a + c + s + b;
coins = press(p);
if(coins == 0) s += c;
if(coins == 1) s += b;
if(coins == 2) s += a;
}
if(press(s + a) == 1) s += a;
else if(press(s + b) == 1) s += b;
else if(press(s + c) == 1) s += c;
return s;
}
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