题目很水，不多说.........

#include
     
      int main(){    long t,n,m,a,i,j,dp[10005],vol[505],jizhi[505],sum,w;    scanf("%ld",&t);    while(t--)    {        w=0;        scanf("%ld%ld",&n,&m);        sum=m-n;        scanf("%ld",&a);        for(i=0;i
      
       dp[j-vol[i]]+jizhi[i])                        dp[j]=dp[j-vol[i]]+jizhi[i];            if(dp[sum]<10000000)            printf("The minimum amount of money in the piggy-bank is %ld.\n",dp[sum]);            else                printf("This is impossible.\n");        }    }    return 0;}