poj 2897 Dramatic Multiplications 模拟

//poj 2897
//sep9
#include<iostream>
using namespace std;
int ans[128],ansp;
int main()
{
	int cases,n,k;
	scanf("%d",&cases);
	while(cases--){
		memset(ans,0,sizeof(ans));
		ansp=0;
		scanf("%d%d",&n,&k);
		int flag=1,c=0,times=0;
		ans[ansp++]=k;
		while(1){
			int p=(n*k+c)%10;
			if(p==ans[0]&&(n*k+c)/10==0)
				break;
			ans[ansp++]=p;
			c=(n*k+c)/10;
			k=p;
			++times;
		}
		if(ans[ansp-1]==0)
			puts("0");
		else{
			for(int i=ansp-1;i>=0;--i)
				printf("%d",ans[i]);
			printf("\n");
		}

	}
	return 0;
}