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Cod sursa(job #324206)
#include<fstream.h>
int a[5001],w,i,n,c,k,j;
int main()
{
ifstream f("energii.in");
ofstream g("energii.out");
f>>n>>w;
a[0]=0;
for(j=1;j<=w;j++)
a[j]=-1;
for(i=1;i<=n;i++)
{
f>>ec>>cg;
for(j=w;j>=0;j--)
{
if(a[j]!=-1)
if(j+ec<=w)
{
if(a[j+ec]==-1||a[j+ec]>cg+a[j])
a[j+ec]=cg+a[j];
}
else
if(a[w]>cg+a[j]||a[w]==-1)
a[w]=cg+a[j];
}
}
g<<a[w];
f.close();
g.close();
return 0;
}