# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
335434 | madlogic | Combo (IOI18_combo) | C++17 | 48 ms | 524 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 <bits/stdc++.h>
#include "combo.h"
using namespace std;
string guess_sequence(int N) {
string str = "ABXY", ans;
for (int i = 0; i < 3; i++) {
string s;
s += str[i];
if (press(s)) {
ans += str[i];
break;
}
}
if (ans.empty()) {
ans += str[3];
}
string nstr;
for (char& c : str) {
if (c != ans[0]) {
nstr += c;
}
}
str = nstr;
for (int i = 1; i < N; i++) {
if (i == N - 1) {
bool found = false;
for (int j = 0; j < 2; j++) {
string s = ans + str[j];
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