MY OUTPUT IS COMING OUT TO BE INCORRECT

#1

#include
#include
using namespace std;

int main()
{
int n;
int a[100000];
int k;

cin>>n;
for(int i=0;i<n;i++)
   cin>>a[i];

cin>>k;

// we have to process first k elements seprately

deque<int> Q(k);

int i;
for(i=0;i<k;i++)
{
    while(!Q.empty() && a[0]>a[Q.back()])
    {
        Q.pop_back();
    }
    Q.push_back(i);
}
// process the remaining elements

for(;i<n;i++)
{
    cout<<a[Q.front()]<<" ";
    
    // 1. Remove the elements which are not part of window
    while((!Q.empty() && (Q.front()<=i-k)))
    {
        Q.pop_front();
    }
    
    
    // 2. Remove the elements which are not useful and part of window
    while(!Q.empty() && a[i]>=a[Q.back()])
    {
        Q.pop_back();
    }
    
    // 3. Add new elements
    Q.push_back(i);
}

cout<<a[Q.front()]<<" ";

}

#2

hi @Mukul-Shane-1247687648773500, in first for loop write a[i] not a[0]

#3

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