Submission #620989

#	Time	Username	Problem	Language	Result	Execution time	Memory
620989		Hazem	Sorting (IOI15_sorting)	C++14	0 / 100	6 ms	340 KiB

sorting

#include <bits/stdc++.h>

using namespace std;

int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	
	int n = N;
	int cur = 0;

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

	for(int i=2;i<n;i++)
		for(int j=2;j<n;j++)
			if(i==j)
				continue;
			else 
			if(S[j]==i){
				P[cur] = i;
				Q[cur] = j;
				cur++;
				swap(S[i],S[j]);
			}

	if((cur&1)){
		swap(S[0],S[1]);
		P[cur] = 0;
		Q[cur] = 0;
		cur++;
	}

	return cur;
}

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:5:39: warning: unused parameter 'M' [-Wunused-parameter]
    5 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                   ~~~~^
sorting.cpp:5:46: warning: unused parameter 'X' [-Wunused-parameter]
    5 | int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
      |                                          ~~~~^~~
sorting.cpp:5:55: warning: unused parameter 'Y' [-Wunused-parameter]
    5 | 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: 0 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 20
• Subtask 6: 0 / 26