Submission #793658

#	Time	Username	Problem	Language	Result	Execution time	Memory
793658		Jarif_Rahman	Sorting (IOI15_sorting)	C++17	16 / 100	1 ms	340 KiB

sorting

#include "sorting.h"
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

int findSwapPairs(int n, int S[], int m, int X[], int Y[], int P[], int Q[]){
    vector<int> pos(n);
    for(int i = 0; i < n; i++) pos[S[i]] = i;

    int ans = 0;
    for(int i = 2; i < n; i++){
        if(i == S[i]) continue;
        swap(S[0], S[1]);
        swap(pos[S[0]], pos[S[1]]);
        P[ans] = i, Q[ans] = pos[i];
        ans++;
        swap(pos[S[i]], pos[i]);
        swap(S[i], S[pos[S[i]]]);
    }

    if(S[0] != 0) P[ans] = 0, Q[ans] = 0, ans++;

    return ans;
}

Compilation message (stderr)

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:10:46: warning: unused parameter 'X' [-Wunused-parameter]
   10 | int findSwapPairs(int n, int S[], int m, int X[], int Y[], int P[], int Q[]){
      |                                          ~~~~^~~
sorting.cpp:10:55: warning: unused parameter 'Y' [-Wunused-parameter]
   10 | int findSwapPairs(int n, int S[], int m, int X[], int Y[], int P[], int Q[]){
      |                                                   ~~~~^~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 12
• Subtask 3: 16 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 20
• Subtask 6: 0 / 26