Submission #135311

#	Time	Username	Problem	Language	Result	Execution time	Memory
135311		StevenH	Sorting (IOI15_sorting)	C++14	0 / 100	3 ms	508 KiB

sorting

#include "sorting.h"
#include <algorithm>
#include <cstdlib>
#include <cstdio>

using namespace std;

int ele[1000];

void swap(int &x ,int &y)
{int t=x; x=y; y=t;}

int comp(int x,int y)
{return x<y;}
int findSwapPairs(int N, int S[], int M, int X[], int Y[], int P[], int Q[]) {
	for (int i=0; i<N; i++)
		ele[i]=S[i];

	sort(ele,ele+N,comp);

	int R=0;


	for(int i=0; i<N; i++)
	{
		swap(S[0],S[1]);
		int j;
		if (i==1)j=0;
		else j=i;
		for(j;j<N;j++)
		{
            if(i==1 && j==1)continue;
			if(S[j]==ele[i])
				break;
        }
		if(i==1)
		{
			P[R]=0;
			Q[R]=j;
			R++;
			swap(S[0],S[j]);
			continue;
		}
		P[R]=j;
		Q[R]=i;
		R++;
		swap(S[i],S[j]);
	}

	if (X[0]==0 && Y[0]==1)
	{
		if(S[0]>S[1])
		{
			P[R]=0;
			Q[R]=0;
			R++;
			swap(S[0],S[1]);
			swap(S[0],S[0]);
		}
	}
/*
	for (int i = 0; i < N; ++i)
		printf("%d ",S[i]);
	printf("\n");*/
	return R;
}

Compilation message (stderr)

sorting.cpp: In function 'int findSwapPairs(int, int*, int, int*, int*, int*, int*)':
sorting.cpp:30:8: warning: statement has no effect [-Wunused-value]
   for(j;j<N;j++)
        ^
sorting.cpp:15:39: warning: unused parameter 'M' [-Wunused-parameter]
 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