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AC是AC了,为什么时间这么慢啊?好像我是最慢的.

Posted by resinsn at 2006-01-31 13:27:09 on Problem 1007
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>

int re(char *s,int m)
{
	int ret=0,i,j;

	for(i=0; i<m-1;i++)
	{
		for(j=i+1; j<m; j++)
		{	
			if(s[i] > s[j])
				ret++;
		}
	}
	return ret;
}

int cmp(const char *a,const char *b)
{
	return (re(a,strlen(a)+1)-re(b,strlen(b)+1));
}


int main(void)
{
    int n,m,i;
	
	char *ps;
	char format[]="%1s";

	scanf("%d %d",&n,&m);
	ps = malloc(m * (n + 1) * sizeof(char));
	assert(ps);
	sprintf(format,"%%%ds",n);
	
	for(i=0; i<m; i++)
	{	
		scanf(format,(ps+i*(n+1)));
	}
	
	qsort(ps,m,(n+1)*sizeof(char),cmp);

	for(i=0;i<m;i++)
	{
		printf(format,(ps+i*(n+1)));
		putchar('\n');
	}


    return 0;
}

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