poj 3624 Charm Bracelet

#include<stdio.h>
#include<string.h>
const int max_size=13881;
int c[max_size],dp[max_size],v[max_size];
int num,weigh;
void Dp()
{
int i,j;
for(i=0;i<num;i++)
for(j=weigh;j>=c[i];j--)
if(dp[j-c[i]]+v[i]>dp[j])
dp[j]=dp[j-c[i]]+v[i];

}
void work()
{
scanf("%d%d",&num,&weigh);
for(int i=0;i<num;i++)
scanf("%d%d",&c[i],&v[i]);
Dp();
printf("%d\n",dp[weigh]);
}
int main()
{
work();
return 0;
}