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Cod sursa(job #373956)
#include<cstdio>
int semn,poz,n,k,st,dr,p1,p2,a[5000001],dq[5000001];
long long max,s;
char x[4000001];
inline void elimst(int i)
{
if(i-dq[st]==k)
++st;
}
void elimdr(int i)
{
while(st<=dr&&a[dq[dr]]>=a[i])
--dr;
dq[++dr]=i;
}
int main()
{
freopen("secventa.in","r",stdin);
freopen("secventa.out","w",stdout);
scanf("%d%d\n",&n,&k);
gets(x);
semn=1; poz=1;
for(int i=0;x[i]&&x[i]!='\n';i++)
if(x[i]==' ')
{
a[poz]=a[poz]*semn;
poz++;
semn=1;
}
else
{
if(x[i]=='-')
semn=-1;
else a[poz]=a[poz]*10+x[i]-'0';
}
st=dr=1;
dq[1]=1;
for(int i=2;i<=k;i++)
{
elimdr(i);
}
s=a[dq[st]]; max=a[dq[st]]; p1=1; p2=k;
for(int i=k+1;i<=n;++i)
{
elimst(i);
elimdr(i);
if(a[dq[st]]>max)
{
max=a[dq[st]];
p2=i;
p1=i-k+1;
}
}
printf("%d %d %lld\n",p1,p2,max);
return 0;
}