oj.uz

Submission #552908

# Submission time Handle Problem Language Result Execution time Memory
552908 2022-04-24T09:40:14 Z elazarkoren Sorting (IOI15_sorting) C++17
74 / 100
 1000 ms 8088 KB 
#include "sorting.h"
#include <bits/stdc++.h>
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define chkmin(a, b) a = min(a, b)
#define chkmax(a, b) a = max(a, b)
//#define int ll
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef vector<pii> vii;
typedef vector<bool> vb;

const int MAX_N = 2e5 + 5;

int x[MAX_N], y[MAX_N];
int n;

int cnt;

vi Compute(vi s) {
    for (int i = 0; i < cnt; i++) swap(s[x[i]], s[y[i]]);
    return s;
}

bool Ok(int N, int S[], int m, int X[], int Y[], int p[], int q[]) {
    cnt = m;
    vi s(n);
    for (int i = 0; i < n; i++) s[i] = S[i], x[i] = X[i], y[i] = Y[i];
    vi s2 = Compute(s);
    int index = 0;
    for (int i = 0; i < cnt; i++) {
        swap(s[x[i]], s[y[i]]);
        int v1 = 0, v2 = 0;
        for (; index < n; index++) {
            if (s2[index] == index) continue;
            for (int j = index + 1; j < n; j++) {
                if (s2[j] == index) {
                    v1 = s2[index], v2 = s2[j];
                    swap(s2[index], s2[j]);
                }
            }
            index++;
            break;
        }
        int ind1, ind2;
        for (ind1 = 0; s[ind1] != v1; ind1++);
        for (ind2 = 0; s[ind2] != v2; ind2++);
        p[i] = ind1, q[i] = ind2;
        swap(s[p[i]], s[q[i]]);
    }
    return is_sorted(all(s));
}

int findSwapPairs(int N, int S[], int m, int X[], int Y[], int p[], int q[]) {
    n = N;
    int begin = 0, end = n - 1, mid;
    while (begin < end) {
        mid = (begin + end) >> 1;
        if (Ok(N, S, mid, X, Y, p, q)) {
            end = mid;
        } else begin = mid + 1;
    }
    Ok(N, S, end, X, Y, p, q);
    return end;
}
//8
//3 5 6 2 1 7 0 4
//8
//0 1
//0 1
//0 1
//0 1
//0 1
//0 1
//0 1
//0 1

Compilation message

sorting.cpp: In function 'bool Ok(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:29:13: warning: unused parameter 'N' [-Wunused-parameter]
   29 | bool Ok(int N, int S[], int m, int X[], int Y[], int p[], int q[]) {
      |         ~~~~^
sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:58:39: warning: unused parameter 'm' [-Wunused-parameter]
   58 | int findSwapPairs(int N, int S[], int m, int X[], int Y[], int p[], int q[]) {
      |                                   ~~~~^

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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 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 0 ms 212 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 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 340 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 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 4 ms 340 KB Output is correct
22 Correct 6 ms 340 KB Output is correct
23 Correct 4 ms 340 KB Output is correct
24 Correct 3 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 5 ms 340 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 408 KB Output is correct
2 Correct 40 ms 412 KB Output is correct
3 Correct 35 ms 404 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 9 ms 340 KB Output is correct
6 Correct 11 ms 340 KB Output is correct
7 Correct 48 ms 340 KB Output is correct
8 Correct 53 ms 400 KB Output is correct
9 Correct 41 ms 404 KB Output is correct
10 Correct 47 ms 400 KB Output is correct
11 Correct 37 ms 392 KB Output is correct
12 Correct 32 ms 340 KB Output is correct
13 Correct 38 ms 396 KB Output is correct
14 Correct 1 ms 340 KB Output is correct

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 408 KB Output is correct
2 Correct 40 ms 412 KB Output is correct
3 Correct 35 ms 404 KB Output is correct
4 Correct 4 ms 340 KB Output is correct
5 Correct 9 ms 340 KB Output is correct
6 Correct 11 ms 340 KB Output is correct
7 Correct 48 ms 340 KB Output is correct
8 Correct 53 ms 400 KB Output is correct
9 Correct 41 ms 404 KB Output is correct
10 Correct 47 ms 400 KB Output is correct
11 Correct 37 ms 392 KB Output is correct
12 Correct 32 ms 340 KB Output is correct
13 Correct 38 ms 396 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Execution timed out 1094 ms 8088 KB Time limit exceeded
16 Halted 0 ms 0 KB -