Problem p02602 (C++)

Buggy submission (status: Runtime Error):
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template <typename T>
using ordered_set =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define int long long
#define pb push_back
#define pii pair<int, int>
#define vi vector<int>
#define vii vector<pii>
#define mi map<int, int>
#define mii map<pii, int>
#define all(a) (a).begin(), (a).end()
#define x first
#define y second
#define sz(x) (int)x.size()
#define endl '\n'
#define sd(t) scanf("%d", &(t))
#define rep(i, a, b) for (int i = a; i < b; i++)
#define hii cout << "hii" << endl
#define okay cout << "okay" << endl
#define hey cout << "hey" << endl
const int INF = 1e12;
const int MOD = 1e9 + 7;

template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
  for (T i : v)
    os << i << ' ';
  return os;
}
template <class T> ostream &operator<<(ostream &os, const set<T> &v) {
  for (T i : v)
    os << i << ' ';
  return os;
}
template <class T, class S>
ostream &operator<<(ostream &os, const pair<T, S> &v) {
  os << v.x << ' ' << v.y;
  return os;
}
template <class T, class S>
ostream &operator<<(ostream &os, const unordered_map<T, S> &v) {
  for (auto i : v)
    os << '(' << i.x << "=>" << i.y << ')' << ' ';
  return os;
}

#ifndef ONLINE_JUDGE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <class Arg1> void __f(const char *name, Arg1 &&arg1) {
  cerr << name << " : " << arg1 << endl;
}
template <class Arg1, class... Args>
void __f(const char *names, Arg1 &&arg1, Args &&...args) {
  const char *sep = strchr(names + 1, ',');
  cerr.write(names, sep - names) << " : " << arg1 << "  ";
  __f(sep + 1, args...);
}
#else
#define trace(...)
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target(                                                            \
    "avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define _CRT_SECURE_NO_WARNINGS
#endif // ifndef ONLINE_JUDGE

clock_t time_p = clock();
void starboy1299() {
  time_p = clock() - time_p;
  cerr << "Time Taken : " << (float)(time_p) / CLOCKS_PER_SEC << "\n";
}

void fast() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
#ifndef ONLINE_JUDGE
  freopen("input.txt", "r", stdin);
  freopen("jjj.txt", "w", stdout);
#endif
}

void solve() {

  int n, k;
  cin >> n >> k;

  vi arr(n);
  rep(i, 0, n) { cin >> arr[i]; }

  int val = 1;
  for (int i = 0; i <= k - 2; i++) {
    val *= arr[i];
  }

  // cout << val << endl;
  vi ans;
  int temp = 1;
  for (int i = k - 1; i < n; i++) {
    val = val * arr[i];
    int curr = val / temp;
    temp *= arr[i - k + 1];
    // cout << curr << endl;
    ans.pb(curr);
  }

  // cout << ans << endl;
  for (int i = 1; i < ans.size(); i++) {
    // cout << arr[i] - arr[i-1] << endl;
    if ((ans[i] - ans[i - 1]) > 0) {
      cout << "Yes" << endl;
    } else
      cout << "No" << endl;
  }
}

int32_t main() {
  fast();
  int t = 1;
  // cin>> t;
  for (int i = 1; i <= t; i++) {
    // cout << "Case #" << i << ": ";
    solve();
  }
  starboy1299();
}

Fixed submission:
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
template <typename T>
using ordered_set =
    tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define int long long
#define pb push_back
#define pii pair<int, int>
#define vi vector<int>
#define vii vector<pii>
#define mi map<int, int>
#define mii map<pii, int>
#define all(a) (a).begin(), (a).end()
#define x first
#define y second
#define sz(x) (int)x.size()
#define endl '\n'
#define sd(t) scanf("%d", &(t))
#define rep(i, a, b) for (int i = a; i < b; i++)
#define hii cout << "hii" << endl
#define okay cout << "okay" << endl
#define hey cout << "hey" << endl
const int INF = 1e12;
const int MOD = 1e9 + 7;

template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
  for (T i : v)
    os << i << ' ';
  return os;
}
template <class T> ostream &operator<<(ostream &os, const set<T> &v) {
  for (T i : v)
    os << i << ' ';
  return os;
}
template <class T, class S>
ostream &operator<<(ostream &os, const pair<T, S> &v) {
  os << v.x << ' ' << v.y;
  return os;
}
template <class T, class S>
ostream &operator<<(ostream &os, const unordered_map<T, S> &v) {
  for (auto i : v)
    os << '(' << i.x << "=>" << i.y << ')' << ' ';
  return os;
}

#ifndef ONLINE_JUDGE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <class Arg1> void __f(const char *name, Arg1 &&arg1) {
  cerr << name << " : " << arg1 << endl;
}
template <class Arg1, class... Args>
void __f(const char *names, Arg1 &&arg1, Args &&...args) {
  const char *sep = strchr(names + 1, ',');
  cerr.write(names, sep - names) << " : " << arg1 << "  ";
  __f(sep + 1, args...);
}
#else
#define trace(...)
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target(                                                            \
    "avx2,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define _CRT_SECURE_NO_WARNINGS
#endif // ifndef ONLINE_JUDGE

clock_t time_p = clock();
void starboy1299() {
  time_p = clock() - time_p;
  cerr << "Time Taken : " << (float)(time_p) / CLOCKS_PER_SEC << "\n";
}

void fast() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
#ifndef ONLINE_JUDGE
  freopen("input.txt", "r", stdin);
  freopen("jjj.txt", "w", stdout);
#endif
}

void solve() {

  int n, k;
  cin >> n >> k;

  vi arr(n);
  rep(i, 0, n) { cin >> arr[i]; }

  for (int i = k; i < n; i++) {
    if (arr[i] > arr[i - k]) {
      cout << "Yes" << endl;
    } else
      cout << "No" << endl;
  }
}

int32_t main() {
  fast();
  int t = 1;
  // cin>> t;
  for (int i = 1; i <= t; i++) {
    // cout << "Case #" << i << ": ";
    solve();
  }
  starboy1299();
}