oj.uz

Submission #432513

# Submission time Handle Problem Language Result Execution time Memory
432513 2021-06-18T10:49:20 Z snasibov05 Sorting (IOI15_sorting) C++14
54 / 100
 1000 ms 76888 KB 
#include "sorting.h"
#include <vector>
#include <cassert>
#include <algorithm>

using namespace std;

#define pii pair<int, int>
#define f first
#define s second
#define pb push_back

int findSwapPairs(int n, int s[], int m, int x[], int y[], int p[], int q[]) {

    vector<vector<int>> v(m+1, vector<int>(n));
    vector<vector<int>> idx(m+1, vector<int>(n));
    for (int i = 0; i < n; ++i) {
        v[0][i] = s[i];
        idx[0][s[i]] = i;
    }

    if (is_sorted(v[0].begin(), v[0].end())) return 0;

    for (int i = 1; i <= m; ++i) {
        v[i] = v[i-1];
        idx[i] = idx[i-1];
        swap(idx[i][v[i][x[i-1]]], idx[i][v[i][y[i-1]]]);
        swap(v[i][x[i-1]], v[i][y[i-1]]);

        vector<int> final = idx[i];
        vector<int> arr = v[i];
        vector<pii> swaps;

        for (int j = 0; j < n; ++j) {
            if (final[j] == j) continue;
            int k = final[j];
            swaps.pb({j, k});
            final[arr[j]] = k;
            arr[k] = arr[j];
            arr[j] = j;
        }

        if (swaps.size() > i) continue;

        arr = v[i];

        for (int j = 0; j < m; ++j) {
            p[i] = q[i] = 0;
        }

        int k = swaps.size();
        for (int l = 1; l <= k; ++l){
            if (is_sorted(v[l].begin(), v[l].end())) return l;

            int a = idx[l][arr[swaps[l-1].f]];
            int b = idx[l][arr[swaps[l-1].s]];
            p[l-1] = a, q[l-1] = b;
            swap(idx[l][arr[swaps[l-1].f]], idx[l][arr[swaps[l-1].s]]);
            swap(v[l][a], v[l][b]);
            swap(arr[swaps[l-1].f], arr[swaps[l-1].s]);

            if (is_sorted(v[l].begin(), v[l].end())) return l;

            for (int j = l+1; j <= i; ++j) {
                v[j] = v[j-1];
                idx[j] = idx[j-1];
                swap(idx[j][v[j][x[j-1]]], idx[j][v[j][y[j-1]]]);
                swap(v[j][x[j-1]], v[j][y[j-1]]);
            }
        }

        return i;
    }

    assert(false);

}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:43:26: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |         if (swaps.size() > i) continue;
      |             ~~~~~~~~~~~~~^~~
sorting.cpp:51:27: warning: conversion from 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} to 'int' may change value [-Wconversion]
   51 |         int k = swaps.size();
      |                 ~~~~~~~~~~^~

Subtask #1
8.0 / 8.0

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

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 3 ms 2636 KB Output is correct
11 Correct 2 ms 2764 KB Output is correct
12 Correct 2 ms 2636 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 0 ms 204 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2764 KB Output is correct
5 Correct 2 ms 2764 KB Output is correct
6 Correct 0 ms 204 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 3 ms 2636 KB Output is correct
11 Correct 2 ms 2764 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 2 ms 2764 KB Output is correct
17 Correct 2 ms 2764 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 58 ms 55680 KB Output is correct
22 Correct 66 ms 54968 KB Output is correct
23 Correct 67 ms 59472 KB Output is correct
24 Correct 55 ms 56652 KB Output is correct
25 Correct 35 ms 59360 KB Output is correct
26 Correct 40 ms 54996 KB Output is correct
27 Correct 55 ms 54808 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1065 ms 76888 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 1065 ms 76888 KB Time limit exceeded
2 Halted 0 ms 0 KB -