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Submission #958622

# Submission time Handle Problem Language Result Execution time Memory
958622 2024-04-06T08:01:51 Z 12345678 Sorting (IOI15_sorting) C++17
100 / 100
 234 ms 24140 KB 
#include "sorting.h"
#include <bits/stdc++.h>
 
using namespace std;
 
const int nx=2e5+5;

int s[nx], rs[nx], loc[nx], idx[nx], ridx[nx], n;

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
    n=N;
    int l=0, r=N;
    while (l<=r)
    {
        int md=(l+r)/2, cur=0;
        for (int i=0; i<N; i++) idx[i]=i, ridx[i]=i, s[i]=S[i], rs[s[i]]=i, P[i]=Q[i]=0;
        for (int i=md-1; i>=0; i--) swap(ridx[idx[X[i]]], ridx[idx[Y[i]]]), swap(idx[X[i]], idx[Y[i]]);
        for (int i=0; i<md; i++)
        {
            swap(ridx[idx[X[i]]], ridx[idx[Y[i]]]);
            swap(idx[X[i]], idx[Y[i]]);
            swap(rs[s[X[i]]], rs[s[Y[i]]]);
            swap(s[X[i]], s[Y[i]]);
            while (cur<N&&ridx[cur]==rs[cur]) cur++;
            if (cur<N) P[i]=ridx[cur], Q[i]=rs[cur], swap(rs[s[P[i]]], rs[s[Q[i]]]), swap(s[P[i]], s[Q[i]]), cur++;
        }
        while (cur<N&&ridx[cur]==rs[cur]) cur++;
        if (l==r) return l;
        if (cur<N) l=md+1;
        else r=md;
    }
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:10:39: warning: unused parameter 'M' [-Wunused-parameter]
   10 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                   ~~~~^
sorting.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type]
   32 | }
      | ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2392 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 0 ms 2396 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2392 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 2 ms 2392 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 2 ms 2396 KB Output is correct
25 Correct 1 ms 2396 KB Output is correct
26 Correct 1 ms 2396 KB Output is correct
27 Correct 2 ms 2396 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 2 ms 2652 KB Output is correct
8 Correct 1 ms 2848 KB Output is correct
9 Correct 1 ms 2648 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2580 KB Output is correct
13 Correct 2 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct

Subtask #6
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 1 ms 2652 KB Output is correct
7 Correct 2 ms 2652 KB Output is correct
8 Correct 1 ms 2848 KB Output is correct
9 Correct 1 ms 2648 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 1 ms 2652 KB Output is correct
12 Correct 1 ms 2580 KB Output is correct
13 Correct 2 ms 2652 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 133 ms 20116 KB Output is correct
16 Correct 163 ms 20644 KB Output is correct
17 Correct 224 ms 21724 KB Output is correct
18 Correct 52 ms 18632 KB Output is correct
19 Correct 129 ms 20688 KB Output is correct
20 Correct 150 ms 21552 KB Output is correct
21 Correct 155 ms 22612 KB Output is correct
22 Correct 139 ms 16872 KB Output is correct
23 Correct 139 ms 22428 KB Output is correct
24 Correct 224 ms 21936 KB Output is correct
25 Correct 234 ms 21684 KB Output is correct
26 Correct 127 ms 21908 KB Output is correct
27 Correct 119 ms 20788 KB Output is correct
28 Correct 191 ms 22064 KB Output is correct
29 Correct 208 ms 21528 KB Output is correct
30 Correct 92 ms 20380 KB Output is correct
31 Correct 196 ms 23372 KB Output is correct
32 Correct 154 ms 23124 KB Output is correct
33 Correct 212 ms 22128 KB Output is correct
34 Correct 165 ms 21968 KB Output is correct
35 Correct 134 ms 20564 KB Output is correct
36 Correct 45 ms 19832 KB Output is correct
37 Correct 225 ms 24140 KB Output is correct
38 Correct 204 ms 21884 KB Output is correct
39 Correct 222 ms 21796 KB Output is correct