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Cod sursa(job #223326)
#include<fstream.h>
ifstream fin("energii.in");
ofstream fout("energii.out");
struct centrala {int e,c;} g[1002];
int n,w,C[1002][5002],s[1002]={0};
int main()
{
fin>>n>>w;
for(int i=1;i<=n;i++)
fin>>g[i].e>>g[i].c;
for(int i=1;i<=n;i++)
for(int j=1;j<=w;j++)
if((g[i].e<=j)&&(g[i].c+C[i-1][j-g[i].e]>C[i-1][j])) {
C[i][j]=g[i].c+C[i-1][j-g[i].e];
s[i]=1;
}
else
C[i][j]=C[i-1][j];
if(C[n][w]==w) fout<<C[n][w];
else {
int min=32000, imin;
for(i=1;i<=n;i++)
if(!s[i]&&g[i].c<min) {
min=g[i].c;
imin=i;
}
C[n][w]+=g[imin].c;
}
return 0;
}