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Submission #572151

# Submission time Handle Problem Language Result Execution time Memory
572151 2022-06-03T19:17:27 Z Hanksburger Sorting (IOI15_sorting) C++17
54 / 100
 3 ms 468 KB 
#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;
int a[200005], b[200005], c[200005], d[200005];
int findSwapPairs(int n, int s[], int m, int x[], int y[], int p[], int q[])
{
    int l=1, r=m, mid, cur;
    while (l<r)
    {
        mid=(l+r)/2;
        for (int i=0; i<n; i++)
        {
            a[i]=b[i]=i;
            c[i]=s[i];
            d[s[i]]=i;
        }
        for (int i=mid-1; i>=0; i--)
        {
            swap(a[x[i]], a[y[i]]);
            swap(b[a[x[i]]], b[a[y[i]]]);
        }
        cur=0;
        for (int i=0; i<mid; i++)
        {
            swap(a[x[i]], a[y[i]]);
            swap(b[a[x[i]]], b[a[y[i]]]);
            swap(c[x[i]], c[y[i]]);
            swap(d[c[x[i]]], d[c[y[i]]]);
            while (cur<=n && b[cur]==d[cur])
                cur++;
            if (cur<n)
            {
                swap(c[b[cur]], c[d[cur]]);
                swap(d[c[b[cur]]], d[c[d[cur]]]);
                while (cur<=n && b[cur]==d[cur])
                    cur++;
            }
        }
        if (cur<n)
            l=mid+1;
        else
            r=mid;
    }
    for (int i=0; i<n; i++)
    {
        a[i]=b[i]=i;
        c[i]=s[i];
        d[s[i]]=i;
    }
    for (int i=l-1; i>=0; i--)
    {
        swap(a[x[i]], a[y[i]]);
        swap(b[a[x[i]]], b[a[y[i]]]);
    }
    cur=0;
    for (int i=0; i<l; i++)
    {
        swap(a[x[i]], a[y[i]]);
        swap(b[a[x[i]]], b[a[y[i]]]);
        swap(c[x[i]], c[y[i]]);
        swap(d[c[x[i]]], d[c[y[i]]]);
        while (cur<=n && b[cur]==d[cur])
            cur++;
        if (cur<n)
        {
            p[i]=b[cur];
            q[i]=d[cur];
            swap(c[b[cur]], c[d[cur]]);
            swap(d[c[b[cur]]], d[c[d[cur]]]);
            while (cur<=n && b[cur]==d[cur])
                cur++;
        }
        else
            p[i]=q[i]=0;
    }
    return l;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 308 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 0 ms 308 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 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 320 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 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 308 KB Output is correct
8 Correct 0 ms 308 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 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 320 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 312 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 2 ms 464 KB Output is correct
22 Correct 2 ms 468 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 468 KB Output is correct
25 Correct 2 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 2 ms 468 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 3 ms 468 KB Output is correct
4 Incorrect 1 ms 468 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 2 ms 468 KB Output is correct
3 Correct 3 ms 468 KB Output is correct
4 Incorrect 1 ms 468 KB Output isn't correct
5 Halted 0 ms 0 KB -