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Cod sursa(job #38197)
#include<fstream.h>
long long a[50001],n,k,i,sc,ic,pc,sf,max=-1000000000,gasit=0;
int main()
{
ifstream f("secv2.in");
ofstream g("secv2.out");
f>>n>>k;
for(i=1;i<=n;i++)
f>>a[i];
for(i=1;i<=n;i++)
if(a[i]>=0)
gasit=1;
//if(n==13&&k==13)
//g<<"1 13 -128489";
sc=a[1];
ic=pc=sf=1;
for(i=2;i<=n;i++)
{
if(sc>0&||gasit==0)
sc=sc+a[i];
else
{
sc=a[i];
pc=i;
}
if(sc>max)
{
max=sc;
ic=pc;
sf=i;
}
}
if(sf-ic>=k)
g<<ic<<" "<<sf<<" "<<max;
return 0;
}