Submission #803011

#	Time	Username	Problem	Language	Result	Execution time	Memory
803011		BT21tata	Sorting (IOI15_sorting)	C++17	54 / 100	8 ms	468 KiB

sorting

#include "sorting.h"
#include <bits/stdc++.h>
using namespace std;

int cur[200005];

int findSwapPairs(int n, int s[], int m, int x[], int y[], int P[], int Q[])
{
	m=n;
	int r=0;
	for(int i=0; i<m; i++)
	{
		swap(s[x[i]], s[y[i]]);
		for(int j=0; j<n; j++)
			cur[j]=s[j];
		for(int j=i+1; j<m; j++)
			swap(cur[x[j]], cur[y[j]]);

		int pos1=0, pos2=0;
		for(int j=0; j<n; j++)
		{
			if(s[j]==cur[i]) pos1=j;
			if(s[j]==i) pos2=j;
		}
		P[r]=pos1;
		Q[r]=pos2;
		swap(s[P[r]], s[Q[r]]);
		r++;
		bool f=1;
		for(int j=0; j+1<n; j++)
			if(s[j]>s[j+1]) f=0;
		if(f) break;
	}
	return r;
}

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