oj.uz

Submission #624140

# Submission time Handle Problem Language Result Execution time Memory
624140 2022-08-07T10:23:22 Z mdn2002 Sorting (IOI15_sorting) C++14
0 / 100
 5 ms 852 KB 
#include "sorting.h"
#include<bits/stdc++.h>
using namespace std;

int n , m , a [502] , x [20004] , y [20004] , dis [20004] , wrdis [20004] , wra [20004] , P [20004] , Q [20004];

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {

    n = N;
    for ( int i = 1 ; i <= n ; i ++ )
    {
        a [i] = S [ i - 1 ];
        a [i] ++;
    }
    m = M;
    for ( int i = 0 ; i < m ; i ++ )
    {
        x [i] = X [i] , y [i] = Y [i];
        x [i] ++ , y [i] ++;
    }
    for ( int i = 1 ; i <= n ; i ++ )
    {
        dis [i] = i;
        wrdis [i] = i;
    }
    for ( int j = m - 1 ; j >= 0 ; j -- )
    {
        swap ( dis [ x [j] ] , dis [ y [j] ] );
        swap ( wrdis [ dis [ x [j] ] ] , wrdis [ dis [ y [j] ] ] );
    }
    set < int > s;
    for ( int i = 1 ; i <= n ; i ++ )
    {
        if ( dis [i] != a [i] )
        {
            s . insert ( dis [i] );
        }
    }

    int r = 0;
    for ( int i = 1 ; i <= m ; i ++ )
    {

        int f = 0;
        for ( int j = 1 ; j <= n ; j ++ )
        {
            if ( a [j] != j ) f = 1;
        }
        if ( f == 0 ) break;

        swap ( a [ x [ i - 1 ] ] , a [ y [ i - 1 ] ] );
        swap ( wra [ a [ x [ i - 1 ] ] ] , wra [ a [ y [ i - 1 ] ] ] );
        swap ( dis [ x [ i - 1 ] ] , dis [ y [ i - 1 ] ] );
        swap ( wrdis [ dis [ x [ i - 1 ] ] ] , wrdis [ dis [ y [ i - 1 ] ] ] );



        P [ i - 1 ] = -1 , Q [ i - 1 ] = -1;
        if ( s . size () )
        {

            int x = * s . begin () , z = wra [x];
            s . erase ( s . begin () );

            swap ( a [ wrdis [x] ] , a [z] );
            swap ( wra [ a [ wrdis [x] ] ] , wra [ a [z] ] );
            if ( a [z] == dis [z] ) s . erase ( s . lower_bound ( dis [z] ) );
            P [ i - 1 ] = wrdis [x] , Q [ i - 1 ] = z;

        }

        if ( P [ i - 1 ] == -1 )
        {
            P [ i - 1 ] = 0;
            Q [ i - 1 ] = 0;
            r ++;
        }

    }
    return r;
}

Compilation message

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:7:73: warning: declaration of 'Q' shadows a global declaration [-Wshadow]
    7 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                                                     ~~~~^~~
sorting.cpp:5:103: note: shadowed declaration is here
    5 | int n , m , a [502] , x [20004] , y [20004] , dis [20004] , wrdis [20004] , wra [20004] , P [20004] , Q [20004];
      |                                                                                                       ^
sorting.cpp:7:64: warning: declaration of 'P' shadows a global declaration [-Wshadow]
    7 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                                            ~~~~^~~
sorting.cpp:5:91: note: shadowed declaration is here
    5 | int n , m , a [502] , x [20004] , y [20004] , dis [20004] , wrdis [20004] , wra [20004] , P [20004] , Q [20004];
      |                                                                                           ^
sorting.cpp:62:17: warning: declaration of 'x' shadows a global declaration [-Wshadow]
   62 |             int x = * s . begin () , z = wra [x];
      |                 ^
sorting.cpp:5:23: note: shadowed declaration is here
    5 | int n , m , a [502] , x [20004] , y [20004] , dis [20004] , wrdis [20004] , wra [20004] , P [20004] , Q [20004];
      |                       ^

Subtask #1
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 Incorrect 0 ms 212 KB Integer 2 violates the range [0, 1]
4 Halted 0 ms 0 KB -

Subtask #2
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 Incorrect 0 ms 212 KB Integer 2 violates the range [0, 1]
4 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 0 ms 212 KB Integer 5 violates the range [0, 4]
3 Halted 0 ms 0 KB -

Subtask #4
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 Incorrect 0 ms 212 KB Integer 2 violates the range [0, 1]
4 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 852 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 26.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 852 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -