| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 568185 | stevancv | Combo (IOI18_combo) | C++14 | 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 <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
using namespace std;
const int N = 1e5 + 2;
const ll mod = 1e9 + 7;
string guess_sequence(int n) {
string ans;
if (press("AB")) {
if (press("A")) ans += 'A';
else ans += 'B';
}
else {
if (press("X")) ans += 'X';
else ans += 'Y';
}
vector<char> v;
if (ans[0] != 'A') v.push_back('A');
if (ans[0] != 'B') v.push_back('B');
if (ans[0] != 'X') v.push_back('X');
if (ans[0] != 'Y') v.push_back('Y');
for (int i = 1; i < n; i++) {
if (i < n - 1) {
string tmp;
for (int j = 0; j < 3; j++) {
tmp += ans;
tmp += v[0];
tmp += v[j];
}
tmp += ans;
tmp += v[1];
int x = press(tmp);
if (x == i + 2) ans += v[0];
else if (x == i + 1) ans += v[1];
else ans += v[2];
}
else {
string tmp = ans;
tmp += v[0];
if (press(tmp) == n) {
ans += v[0];
continue;
}
tmp = ans;
tmp += v[1];
if (press(tmp) == n) {
ans += v[1];
}
else {
ans += v[2];
}
}
}
return ans;
}
/*int main() {
ios::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int n; cin >> n;
cout << guess_sequence(n) << en;
return 0;
}
*/