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Cod sursa(job #775687)
#include <fstream>
#include <algorithm>
using namespace std;
bool v[50000];
int x[1000],a[1000],i,j,n,k;
int main()
{
ifstream f("economie.in");
ofstream g("economie.out");
f>>n;
for (i=1;i<=n;i++) f>>a[i];
sort(a+1,a+n+1);
v[0]=true;
for (i=1;i<=n;i++)
if (v[a[i]]==false)
{
for (j=0;j+a[i]<=a[n];j++)
if (v[j]!=false) v[j+a[i]]=true;
x[++k]=a[i];
}
g<<k<<'\n';
for (i=1;i<=k;i++) g<<x[i]<<'\n';
f.close();
g.close();
return 0;
}