#include<fstream>
using namespace std;ifstream f("rucsac.in");ofstream g("rucsac.out");int N,G,a[10003],W,P,i;int main(){f>>N>>G;while(f>>W>>P)for(i=G;i>=W;--i)a[i]=max(a[i],a[i-W]+P);g<<a[G];}