# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
271811 | SeDunion | Combo (IOI18_combo) | C++14 | 41 ms | 564 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 <bits/stdc++.h>
using namespace std;
string guess_sequence (int N) {
string X = "X";
string Y = "Y";
string A = "A";
string B = "B";
string s, r(3, '-');
if (press (X + Y)) {
if (press(X)) s += X, r = A + B + Y;
else s += Y, r = A + B + X;
} else {
if (press(A)) s += A, r = B + X + Y;
else s += B, r = A + X + Y;
}
if (N == 1) return s;
for (int i = 1 ; i < N - 1 ; ++ i) {
string cur = s + r[0] + s + r[1] + r[0] + s + r[1] + r[1] + s + r[1] + r[2];
int p = press (cur);
if (p == i) {
s += r[2];
} else if (p == i + 1) {
s += r[0];
} else if (p == i + 2) {
s += r[1];
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