hdu1.2.3

#include<stdio.h>#include<math.h>void main(){int n,x,y,i,sum;while(scanf("%d",&n)!=EOF){sum=0;while(n&&(scanf("%d(%d)",&x,&y)!=EOF)){i=0;while(x){         sum+=(int)((x%10)*pow(y,i));    x/=10;i++;}    n--;}printf("%d\n",sum);}}