Submission #428294

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
428294	2021-06-15T09:46:30 Z	haxorman	Sorting (IOI15_sorting)	C++14	36 / 100	1000 ms	516 KB

sorting

#include "sorting.h"
#include "bits/stdc++.h"
using namespace std;

const int mxN = 2e5 + 7;

int n, m, arr[mxN], freq[mxN];

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	n = N, m = M;

	for (int i = 0; i < n; ++i) {
		arr[i] = S[i];
	}

	for (int i = 0; i < m; ++i) {
		freq[X[i]]++;
		freq[Y[i]]++;
	}

	int R = 0;
	bool ok = false;
	for (int ind = 0; ind < m; ++ind) {
		ok = true;
		for (int i = 0; i < n; ++i) {
			if (arr[i] != i) {
				ok = false;
			}
		}

		if (ok) {
			break;
		}
		
		swap(arr[X[ind]], arr[Y[ind]]);
		freq[X[ind]]--;
		freq[Y[ind]]--;

		ok = true;
		for (int i = 0; i < n; ++i) {
			if (arr[i] != i) {
				ok = false;
			}
		}

		if (ok) {
			P[ind] = Q[ind] = 0;
			++R;
			break;
		}

		bool stop = false;
		for (int i = 0; i < n && !stop; ++i) {
			if (freq[i])
				continue;

			for (int j = 0; j < n && !stop; ++j) {
				if (arr[j] == i && i != j) {
					swap(arr[j], arr[i]);
					P[ind] = j, Q[ind] = i;
					++R;
					stop = true;
				}
			}
		}

		if (!stop) {
			P[ind] = Q[ind] = 0;
			++R;
		}

	}

	return R;
}

Subtask #1

8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct

Subtask #2

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct

Subtask #3

16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	2 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct

Subtask #4

0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	0 ms	204 KB	Output is correct
3	Correct	1 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	2 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Incorrect	38 ms	516 KB	Output isn't correct
22	Halted	0 ms	0 KB	-

Subtask #5

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	1080 ms	488 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-

Subtask #6

0 / 26.0

#	Verdict	Execution time	Memory	Grader output
1	Execution timed out	1080 ms	488 KB	Time limit exceeded
2	Halted	0 ms	0 KB	-