oj.uz

Submission #432519

# Submission time Handle Problem Language Result Execution time Memory
432519 2021-06-18T10:50:12 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 <= k; ++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 0 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 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 0 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 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 4 ms 2636 KB Output is correct
11 Correct 3 ms 2764 KB Output is correct
12 Correct 4 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 1 ms 204 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 3 ms 2764 KB Output is correct
5 Correct 3 ms 2764 KB Output is correct
6 Correct 1 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 0 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 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 4 ms 2636 KB Output is correct
11 Correct 3 ms 2764 KB Output is correct
12 Correct 4 ms 2636 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 3 ms 2636 KB Output is correct
16 Correct 3 ms 2764 KB Output is correct
17 Correct 3 ms 2764 KB Output is correct
18 Correct 1 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 61 ms 55660 KB Output is correct
22 Correct 58 ms 54856 KB Output is correct
23 Correct 72 ms 59364 KB Output is correct
24 Correct 53 ms 56556 KB Output is correct
25 Correct 35 ms 59276 KB Output is correct
26 Correct 39 ms 54968 KB Output is correct
27 Correct 58 ms 54692 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1095 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 1095 ms 76888 KB Time limit exceeded
2 Halted 0 ms 0 KB -