#include<fstream.h> 
int v[50002]; 
int main() {     
int n,k,i,s=0,min=0,max,x=1,y,st=1; 

ifstream f("secv2.in");
ofstream g("secv2.out");
f>>n>>k;
for (i=1;i<=k;++i)
    f>>v[i],v[i]+=v[i-1]; 
max=v[k],y=k; 
for (i=k+1;i<=n;++i){ 
f>>v[i],v[i]+=v[i-1];
if (min>v[i-k]) 
min=v[i-k],st=i-k+1; 
if (max<v[i]-min) 
max=v[i]-min,x=st,y=i;     
} 
g<<x<<' '<<y<<' '<<max<<'\n';     
return 0; 
}