NYOJ 49 开心的小明

#include<stdio.h>
#include<string.h>
struct bb
{
int prize;//**价格**//
int imp;//**重要度**//
int sum;//**总和**//
}w[100001];
int main()
{
int ncases,money,n,i,j,a[100001];
scanf("%d",&ncases);
while(ncases--)
{
memset(w,0,sizeof(w));
memset(a,0,sizeof(a));
scanf("%d %d",&money,&n);
for(i=1;i<=n;i++)
{
scanf("%d %d",&w[i].prize,&w[i].imp);
w[i].sum=w[i].prize*w[i].imp;
}
for(i=1;i<=n;i++)
{
for(j=money;j>=w[i].prize;j--)
{
a[j]=a[j]>(a[j-w[i].prize]+w[i].sum)?a[j]:(a[j-w[i].prize]+w[i].sum);
}
}
printf("%d\n",a[money]);
}
return 0;
}