Submission #928195

#	Time	Username	Problem	Language	Result	Execution time	Memory
928195		vjudge1	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	0 / 100	3058 ms	27120 KiB

sortbooks

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define int long long
#define pb push_back
#define all(x) x.begin(), x.end()

const int maxn = 1e6 + 5;
const int mod = 1e9 + 7;

int t[4 * maxn], a[maxn];

void build(int v, int tl, int tr) {
  if (tl == tr) {
    t[v] = a[tl];
    return;
  }
  int mid = tl + tr >> 1;
  build(v + v, tl, mid);
  build(v + v + 1, mid + 1, tr);
  t[v] = min(t[v + v], t[v + v + 1]);
}

int get(int v, int tl, int tr, int l, int r) {
  if (l > tr || r < tl) return (int)1e9 + 5;
  if (l <= tl && tr <= r) {
    return t[v];
  }
  int mid = tl + tr >> 1;
  return min(get(v + v, tl, mid, l, r), get(v + v + 1, mid + 1, tr, l, r));
}

signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0); cout.tie(0);
  
  int n, m;
  cin >> n >> m;
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
  }
  build(1, 1, n);
  while (m--) {
    int l, r, k;
    cin >> l >> r >> k;
    if (get(1, 1, n, l, r) > k) {
      cout << "0\n";
      continue;
    }
    bool is = 1;
    for (int i = l; i <= r && is; i++) {
      for (int j = i + 1; j <= r && is; j++) {
        if (a[i] > a[j] && a[i] + a[j] > k) is = 0;
      }
    }
    cout << is << '\n';
  }
}

Compilation message (stderr)

sortbooks.cpp: In function 'void build(long long int, long long int, long long int)':
sortbooks.cpp:19:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   19 |   int mid = tl + tr >> 1;
      |             ~~~^~~~
sortbooks.cpp: In function 'long long int get(long long int, long long int, long long int, long long int, long long int)':
sortbooks.cpp:30:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |   int mid = tl + tr >> 1;
      |             ~~~^~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23