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Submission #804228

# Submission time Handle Problem Language Result Execution time Memory
804228 2023-08-03T07:37:02 Z _martynas Sorting (IOI15_sorting) C++11
54 / 100
 5 ms 732 KB 
#include "sorting.h"
#include <bits/stdc++.h>

using namespace std;

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    int T[N];
    for (int i = 0; i < N; i++) T[i] = S[i];
    for (int i = 0; i < M; i++) swap(T[X[i]], T[Y[i]]);
    for (int i = 0; i < M; i++) P[i] = Q[i] = 0;
    vector<pair<int, int>> swap_list;
    for (int i = 0; i < N; i++) {
        if (T[i] != i) {
            swap_list.emplace_back(i, T[i]);
            for (int j = i+1; j < N; j++) {
                if (T[j] == i) {
                    swap(T[i], T[j]);
                }
            }
        }
    }
    for (int i = 0; i < N; i++) T[i] = S[i];
    for (int i = 0; i < (int)swap_list.size(); i++) {
        swap(T[X[i]], T[Y[i]]);
        int a, b;
        for (int j = 0; j < N; j++) {
            if (T[j] == swap_list[i].first) a = j;
            if (T[j] == swap_list[i].second) b = j;
        }
        P[i] = a;
        Q[i] = b;
        swap(T[a], T[b]);
    }

    for (int i = 0; i < M; i++) {
        if (is_sorted(S, S+N)) return i;
        swap(S[X[i]], S[Y[i]]);
        swap(S[P[i]], S[Q[i]]);
    }
    return M;
}

// int main(int argc, char *argv[]) {
//     if (argc > 1) srand(atoi(argv[1]));
//     int N = rand() % 50 + 1;
//     int M = 30*N;
//     int S[N], X[M], Y[M], P[M], Q[M];

//     iota(S, S+N, 0);
//     random_shuffle(S, S+N);

//     for (int i = 0; i < N; i++) {
//         cerr << S[i] << " \n"[i == N-1];
//     }

//     for (int i = 0; i < M; i++) {
//         int a = rand() % N, b = rand() % N;
//         if (a > b) swap(a, b);
//         X[i] = 0, Y[i] = 0;
//     }

//     findSwapPairs(N, S, M, X, Y, P, Q);
//     return 0;
// }

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 300 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 280 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 224 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 304 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 280 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 224 KB Output is correct
19 Correct 1 ms 224 KB Output is correct
20 Correct 1 ms 224 KB Output is correct
21 Correct 3 ms 692 KB Output is correct
22 Correct 3 ms 608 KB Output is correct
23 Correct 4 ms 696 KB Output is correct
24 Correct 4 ms 712 KB Output is correct
25 Correct 3 ms 608 KB Output is correct
26 Correct 3 ms 732 KB Output is correct
27 Correct 3 ms 596 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 436 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 436 KB Output isn't correct
2 Halted 0 ms 0 KB -