hdu 2117 Just a Numble

/*

题意：输入n、m，设a=1/n，输出a小数点后第m位的值

思路：模拟除法实现

*/
#include 
#include 
const int mMax=100007;
int res[mMax],e;
int n,m;
void solve()
{
	memset(res,0,sizeof(res));
	e=0;
	int k=1;
	while(k != 0 && e < m)
	{
		k *= 10;
		if(k >= n)
		{
			res[e++] = k / n;
			k = k % n;
		}
		else
			res[e++]=0;
	}
}
int main()
{
	//freopen("f://data.in","r",stdin);
	while(scanf("%d %d", &n, &m) != EOF)
	{
		if(n == 1) printf("0\n");
		else
		{
			solve();
			printf("%d\n",res[m-1]);
		}
	}
	return 0;
}