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Submission #959187

# Submission time Handle Problem Language Result Execution time Memory
959187 2024-04-07T15:41:51 Z maxFedorchuk Sorting (IOI15_sorting) C++17
100 / 100
 184 ms 23236 KB 
#include <bits/stdc++.h>
using namespace std;

int n,m,*x,*y,*s,*p,*q;

const long long MX=2e5+10;
int a[MX],ai[MX];
int b[MX],bi[MX];

bool f(int k)
{
    for(int i=0;i<n;i++)
    {
        a[i]=s[i];
        b[i]=s[i];
    }

    for(int i=0;i<k;i++)
    {
        swap(a[x[i]],a[y[i]]);
    }

    for(int i=0;i<n;i++)
    {
        ai[a[i]]=i;
        bi[b[i]]=i;
    }

    int uk=0;
    for(int i=0;i<k;i++)
    {
        swap(bi[b[x[i]]],bi[b[y[i]]]);
        swap(b[x[i]],b[y[i]]);

        while(uk<n && a[uk]==uk)
        {
            uk++;
        }

        if(uk==n)
        {
            p[i]=0;
            q[i]=0;
            continue;
        }

        p[i]=bi[uk];
        q[i]=bi[a[uk]];

        swap(b[p[i]],b[q[i]]);
        swap(bi[uk],bi[a[uk]]);

        ai[a[uk]]=ai[uk];
        swap(a[uk],a[ai[uk]]);
        ai[uk]=uk;
    }

    bool o=1;
    for(int i=0;i<n;i++)
    {
        o&=(a[i]==i);
    }
    return o;
}

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) 
{
    n=N;m=M;s=S;x=X;y=Y;p=P;q=Q;

    int l=-1,r=M;

    while(l+1<r)
    {
        int mid=(l+r)/2;
        if(f(mid))
        {
            r=mid;
        }
        else
        {
            l=mid;
        }
    }

    f(r);
    return r;
}

Subtask #1
8.0 / 8.0

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

Subtask #2
12.0 / 12.0

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

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2496 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 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 2 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 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 2 ms 2396 KB Output is correct
13 Correct 1 ms 2496 KB Output is correct
14 Correct 1 ms 2396 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 1 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 2904 KB Output is correct
22 Correct 1 ms 2904 KB Output is correct
23 Correct 1 ms 2652 KB Output is correct
24 Correct 1 ms 2652 KB Output is correct
25 Correct 2 ms 2764 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2652 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 2 ms 2652 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 2500 KB Output is correct
7 Correct 1 ms 2648 KB Output is correct
8 Correct 2 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 3 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2648 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 2652 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 2 ms 2652 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 2500 KB Output is correct
7 Correct 1 ms 2648 KB Output is correct
8 Correct 2 ms 2652 KB Output is correct
9 Correct 1 ms 2652 KB Output is correct
10 Correct 1 ms 2652 KB Output is correct
11 Correct 3 ms 2652 KB Output is correct
12 Correct 1 ms 2652 KB Output is correct
13 Correct 1 ms 2648 KB Output is correct
14 Correct 1 ms 2652 KB Output is correct
15 Correct 141 ms 20296 KB Output is correct
16 Correct 154 ms 20648 KB Output is correct
17 Correct 181 ms 21616 KB Output is correct
18 Correct 58 ms 18596 KB Output is correct
19 Correct 116 ms 20916 KB Output is correct
20 Correct 125 ms 21472 KB Output is correct
21 Correct 125 ms 22592 KB Output is correct
22 Correct 147 ms 17960 KB Output is correct
23 Correct 179 ms 22512 KB Output is correct
24 Correct 178 ms 22232 KB Output is correct
25 Correct 181 ms 22024 KB Output is correct
26 Correct 125 ms 21332 KB Output is correct
27 Correct 111 ms 21048 KB Output is correct
28 Correct 184 ms 23124 KB Output is correct
29 Correct 164 ms 21816 KB Output is correct
30 Correct 89 ms 21588 KB Output is correct
31 Correct 171 ms 22096 KB Output is correct
32 Correct 154 ms 21624 KB Output is correct
33 Correct 177 ms 22096 KB Output is correct
34 Correct 162 ms 23236 KB Output is correct
35 Correct 117 ms 20564 KB Output is correct
36 Correct 48 ms 20820 KB Output is correct
37 Correct 182 ms 22608 KB Output is correct
38 Correct 173 ms 21772 KB Output is correct
39 Correct 174 ms 21908 KB Output is correct