#include
     
      #include
      
       #include
       
        #include
        
         using namespace std;int c[3500],w[3500],n,m,dp[13000];int main(){int i,j;while(scanf("%d %d",&n,&m)!=EOF){for(i=0;i
         
          =c[i];j--)dp[j]=max(dp[j-c[i]]+w[i],dp[j]);printf("%d\n",dp[m]);}return 0;}