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Cod sursa(job #819539)
#include <fstream>
#define dmax 5024
using namespace std;
ifstream fin("rucsac.in");
ofstream fout("rucsac.out");
int n;
int g[dmax], c[dmax], gmax, cmax[dmax], uz[dmax][dmax];
void citire();
void pd();
void afisare();
int main()
{
citire();
pd();
afisare();
return 0;
}
void citire()
{
int i;
fin>>n>>gmax;
for(i=1;i<=n;i++)
fin>>g[i]>>c[i];
}
void pd()
{
int i, G, maxim=-1, x, savei=0;
for(G=1;G<=gmax;G++)
{
for(i=1;i<=n;i++)
{
if(g[i]<=G&&uz[G-g[i]][i]==0)
{
x=c[i]+cmax[G-g[i]];
if(x>maxim)
{
savei=i;
maxim=x;
cmax[G]=x;
}
}
}
if(savei!=0)
for(i=1;i<=n;i++)
uz[G][i]=uz[G-g[savei]][i];
uz[G][savei]=1;
savei=0;
maxim=-1;
}
}
void afisare()
{
int i, maxim=-1, savei;
for(i=1;i<=gmax;i++)
if(cmax[i]>maxim)
{
maxim=cmax[i];
savei=i;
}
fout<<maxim<<'\n';
/*for(i=1;i<=n;i++)
if(uz[savei][i]==1)
fout<<g[i]<<' '<<c[i]<<'\n';*/
}