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Cod sursa(job #374773)
#include<cstdio>
const int N=1<<19;
const int MAX= - (1<<15);
int n,k,i,st,dr,a[N],dq[N];
inline void stanga(int i)
{
if(i-dq[st]==k) st++;
}
inline void dreapta(int i)
{
while(st<=dr&&a[i]<=a[dq[dr]]) dr--;
dq[++dr]=i;
}
int main()
{
freopen("secventa.in","r",stdin);
freopen("secventa.out","w",stdout);
scanf("%d%d",&n,&k);
for(i=1;i<=n;++i)
scanf("%d",&a[i]);
st=1;
dr=0;
for(i=1;i<k;++i)
dreapta(i);
int max=MAX;
int stm,drm;
for(i=k;i<=n;++i)
{
stanga(i);
dreapta(i);
if(a[dq[st]]>max)
{
stm=i-k+1;
drm=i;
max=a[dq[st]];
}
}
printf("%d %d %d",stm,drm,max);
return 0;
}