关于OJ中的Segmentation Fault

[yiloving]

这段代码用VS2013编译运行都是正确的，提交出现Segmentation Fault 错误，

Segmentation Fault : The possible cases of your encountering this error are:

•1.buffer overflow --- usually caused by a pointer reference out of range.

•2.stack overflow --- please keep in mind that the default stack size is 8192K.

到底是哪个地方出错了？求教了

#include <stdio.h>
#include <stdlib.h>
#include <memory.h>

int
main()
{
	int n, m, count[10], *buf;
	int i, k;
	scanf("%d", &n);
	memset(count, 0, n*sizeof(int));
	for (i = 0; i < n; i++)
	{
		scanf("%d", &m);
		buf = (int *)malloc(m*sizeof(int));
		if (buf == NULL)
		{
			printf("space error\n");
			return 0;
		}
		int j = 0;
		while ( m != 0)
		{
			scanf("%d", &buf[j]);
			if (buf[j] < 0 || buf[j] > 9999)
			{
				printf("error");
				return 0;
			}
			if (buf[j] > 6000 && buf[j] <= 9999)
				count[i]++;
			j++;
			m--;
		}
	}
	for (k = 0; k < n; k++)
		printf("%d\n", count[k]);
	return 0;
}

[mxway]

不知道你n的取值范围是多少

[fly_dragon_fly]

int count[1000000];这个作全局试试