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Cod sursa(job #819838)
#include <fstream>
using namespace std;
ifstream fin ("rucsac.in");
ofstream fout ("rucsac.out");
int n, Gmax, c[5001],g[5001], use[10001],cmax[5001];
int main()
{
int s, i, k ;
fin>>n>>Gmax;
for(i=1;i<=n;i++)
{fin>>g[i];
fin>>c[i];}
cmax[0]=0;
for(i=1;i<=Gmax;i++)
cmax[i]=-1;
for(s=1;s<=Gmax;s++)
for(i=1;i<=n;i++)
if(g[i]<=s &&cmax[s-g[i]]!=-1 && use[s-g[i]]<i)
if(cmax[s]<cmax[s-g[i]]+c[i])
{
cmax[s]=cmax[s-g[i]]+c[i];
use[s]=i;
}
int gata=0;
for(s=Gmax;s>=0;s--)
if(cmax[s]!=-1)
{fout<<cmax[s]; break;}
fout.close();
return 0;
}