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Cod sursa(job #286176)
#include<fstream>
using namespace std;
ifstream fin("secv2.in");
ofstream fout("secv2.out");
long n,a,s,maxx=-100000,i0,j0,i1,k;
int main()
{ long i;
fin>>n>>k;
i0=1;
for(i=1;i<=n;i++)
{ fin>>a;
if(s<0)
{ s=a;
i1=i;
}
else s+=a;
if(maxx<s&&i-i1>=k)
{ maxx=s;
i0=i1;
j0=i;
}
}
fout<<i0<<" "<<j0<<" "<<maxx;
fin.close();
fout.close();
return 0;
}