#include <bits/stdc++.h>
int main() {
// O(N^2)
int N, Q;
std::cin >> N >> Q;
std::vector<int> P(N);
for (auto &e : P) {
std::cin >> e;
--e;
}
std::vector<std::vector<int>> states;
states.push_back(P);
while (true) {
const auto &a = states.back();
std::vector<int> x, y;
std::copy(a.begin(), a.begin() + (N / 2), std::back_inserter(x));
std::copy(a.begin() + (N / 2), a.end(), std::back_inserter(y));
std::vector<int> nextPerm;
int j = 0;
for (int i = 0; i < N / 2; ++i) {
while (j != N / 2 and y[j] < x[i]) {
nextPerm.push_back(y[j++]);
}
nextPerm.push_back(x[i]);
}
while (j != N / 2) {
nextPerm.push_back(y[j++]);
}
if (nextPerm == a) {
break;
}
states.push_back(nextPerm);
}
while (Q--) {
int t, i;
std::cin >> t >> i;
--i;
if (t < states.size()) {
std::cout << states[t][i] + 1 << std::endl;
} else {
std::cout << states.back()[i] + 1 << std::endl;
}
}
}
Compilation message
Main.cpp: In function 'int main()':
Main.cpp:40:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
40 | if (t < states.size()) {
| ~~^~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1585 ms |
13356 KB |
Output is correct |
2 |
Correct |
1548 ms |
10668 KB |
Output is correct |
3 |
Correct |
1523 ms |
11452 KB |
Output is correct |
4 |
Correct |
1468 ms |
9256 KB |
Output is correct |
5 |
Correct |
1578 ms |
10348 KB |
Output is correct |
6 |
Correct |
1477 ms |
10008 KB |
Output is correct |
7 |
Correct |
1565 ms |
10500 KB |
Output is correct |
8 |
Correct |
1456 ms |
9932 KB |
Output is correct |
9 |
Correct |
1445 ms |
9640 KB |
Output is correct |
10 |
Correct |
1478 ms |
9836 KB |
Output is correct |
11 |
Correct |
1489 ms |
9896 KB |
Output is correct |
12 |
Correct |
1455 ms |
8804 KB |
Output is correct |
13 |
Correct |
1483 ms |
9388 KB |
Output is correct |
14 |
Correct |
1513 ms |
10012 KB |
Output is correct |
15 |
Correct |
1547 ms |
9676 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1506 ms |
8788 KB |
Output is correct |
18 |
Correct |
1457 ms |
8868 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
878 ms |
524288 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
846 ms |
524288 KB |
Execution killed with signal 9 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1585 ms |
13356 KB |
Output is correct |
2 |
Correct |
1548 ms |
10668 KB |
Output is correct |
3 |
Correct |
1523 ms |
11452 KB |
Output is correct |
4 |
Correct |
1468 ms |
9256 KB |
Output is correct |
5 |
Correct |
1578 ms |
10348 KB |
Output is correct |
6 |
Correct |
1477 ms |
10008 KB |
Output is correct |
7 |
Correct |
1565 ms |
10500 KB |
Output is correct |
8 |
Correct |
1456 ms |
9932 KB |
Output is correct |
9 |
Correct |
1445 ms |
9640 KB |
Output is correct |
10 |
Correct |
1478 ms |
9836 KB |
Output is correct |
11 |
Correct |
1489 ms |
9896 KB |
Output is correct |
12 |
Correct |
1455 ms |
8804 KB |
Output is correct |
13 |
Correct |
1483 ms |
9388 KB |
Output is correct |
14 |
Correct |
1513 ms |
10012 KB |
Output is correct |
15 |
Correct |
1547 ms |
9676 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1506 ms |
8788 KB |
Output is correct |
18 |
Correct |
1457 ms |
8868 KB |
Output is correct |
19 |
Correct |
1 ms |
212 KB |
Output is correct |
20 |
Correct |
0 ms |
212 KB |
Output is correct |
21 |
Runtime error |
878 ms |
524288 KB |
Execution killed with signal 9 |
22 |
Halted |
0 ms |
0 KB |
- |