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Cod sursa(job #152486)
#include<fstream.h>
int i,j,ifin,jfin,n,k,v[50000];
long long h=-30000000000,s=0;
int main()
{
ifstream f("secv2.in");
ofstream g("secv2.out");
f>>n>>k;
for(i=1;i<=n;i++)f>>v[i];
for (i=1;i<=n;i++)
{s+=v[i];
if (s>h&&i>=k)
{h=s;
jfin=i;}
}
s=0;
h=-30000000000;
for (i=jfin;i>0;i--)
{s+=v[i];
if (s>h&&(jfin-i+1)>=k)
{h=s;
ifin=i;}
}
g<<ifin<<" "<<jfin<<" "<<h;
f.close();
g.close();
return 0;
}