oj.uz

Submission #48223

# Submission time Handle Problem Language Result Execution time Memory
48223 2018-05-10T15:51:42 Z cheater2k Sorting (IOI15_sorting) C++17
0 / 100
 18 ms 640 KB 
#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 2005;

int n, m;
int s[MAXN], pos[MAXN];
int cnt[MAXN];

void do_swap(int x, int y) {
	int p = s[x], q = s[y];
	swap(pos[p], pos[q]);
	swap(s[x], s[y]);
}

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) {
  	s[i] = S[i];
  	pos[s[i]] = i;
  }

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

  for (int i = 0; i < m; ++i) {
  	do_swap(X[i], Y[i]);
  	--cnt[X[i]];
  	--cnt[Y[i]];

  	bool found = false;
  	for (int j = 0; j < n; ++j) {
  		if (pos[j] != j && cnt[j] == 0) {
  			found = true;
  			P[i] = j; Q[i] = pos[j];
  			do_swap(j, pos[j]);
  			break;
  		}
  	}

  	if (!found) P[i] = Q[i] = 0, do_swap(0, 0);
  }

  for (int i = 0; i < n; ++i) assert(s[i] == i);
  return m;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 18 ms 640 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Runtime error 18 ms 640 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -