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Cod sursa(job #678450)
#include<algorithm>
#include<fstream>
using namespace std;
long n,a[50005];
int main()
{
ifstream f("secv2.in");
ofstream g ("secv2.out");
int i,k;
f>>n>>k;
for(i=1;i<=n;i++)
f>>a[i];
long suma=-int(2e9),inceput,sfarsit,poz,max=-int(2e9);
for(i=1;i<=n;i++)
{ if(suma>=0 &&i>=k)
suma+=a[i];
else
{
suma=a[i];
poz=i;
}
if(suma>max)
{ max=suma;
inceput=poz;
sfarsit=i;
}
}
g<<inceput<<" "<<sfarsit<<" "<<max;
f.close();
g.close();
return 0;
}