Revise paste Untitled

#include <iostream>
#include <algorithm>
#include <vector>
#include <cmath>
#include <set>
#include <array>
using namespace std;
const int maxn = 2e5 + 10;

multiset<int> smaller_values, greater_values;
int k;
void insert_value(int x) {
    int max_in_smaller = *smaller_values.rbegin();
    
    if(max_in_smaller < x) {
        greater_values.insert(x);
        
        if(greater_values.size() > k / 2) {
            int min_in_greater = *greater_values.begin();
            smaller_values.insert(min_in_greater);
            greater_values.erase(greater_values.find(min_in_greater));
        }
    }
    else {
        smaller_values.insert(x);
        
        if(smaller_values.size() > (k + 1) / 2) {
            int tmp_max_in_smaller = *smaller_values.rbegin();
            greater_values.insert(tmp_max_in_smaller);
            smaller_values.erase(smaller_values.find(tmp_max_in_smaller));
        }
    }
    
}
void remove_value(int x) {
    if(greater_values.find(x) != greater_values.end()) {
        greater_values.erase(greater_values.find(x));
    }
    else if(smaller_values.find(x) != smaller_values.end()) {
        smaller_values.erase(smaller_values.find(x));
    }
    
    if(smaller_values.empty()) {
        smaller_values.insert(*greater_values.begin());
        greater_values.erase(greater_values.begin());
    }
    
}
int main() {
    ios_base::sync_with_stdio(false);
  
    int n;
    cin >> n >> k;
    
    vector<int> v(n);
    for(int i = 0; i < n; i++) {
        cin >> v[i];
    }
    
    smaller_values.insert(v[0]);
    
    for(int i = 1; i < k; i++) {
        insert_value(v[i]);
    }
    
    cout << *smaller_values.rbegin() << " ";
    
    for(int i = k; i < n; i++) {
        if(k > 1) {
            remove_value(v[i - k]);
            insert_value(v[i]);
        }
        else {
            insert_value(v[i]);
            remove_value(v[i - 1]);
        }
        
        cout << *smaller_values.rbegin() << " ";
    }
   
    return 0;
}
// 5, 1, 2, 3
// 1, 2, 3, 5