Submission #490441

#TimeUsernameProblemLanguageResultExecution timeMemory
490441acmHedgehog Daniyar and Algorithms (IZhO19_sortbooks)C++14
0 / 100
3093 ms84380 KiB
#ifdef ONLINE_JUDGE
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#endif
#include <bits/stdc++.h>
#define speed                   \
  ios_base::sync_with_stdio(0); \
  cin.tie(0);                   \
  cout.tie(0);
#define precision     \
  cout.precision(30); \
  cerr.precision(10);
#define ll long long
#define ld long double
#define pb(x) push_back(x)
#define sz(x) (int)x.size()
#define mp(x, y) make_pair(x, y)
#define all(x) x.begin(), x.end()
#define pc(x) __builtin_popcount(x)
#define pcll(x) __builtin_popcountll(x)
#define F first
#define S second
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
void ioi(string name) {
  freopen((name + ".in").c_str(), "r", stdin);
  freopen((name + ".out").c_str(), "w", stdout);
}
ll n, m, a[1000005], b[1000005], w[1000005], d[1000005];
pair<ll, ll> c[1000005];
vector<ll> v, q[1000005];
ll get(ll l, ll r) { return *max_element(b + l, b + r + 1); }
int main() {
  speed;
  precision;
  // code
  cin >> n >> m;
  for (int i = 1; i <= n; i++) cin >> a[i];
  for (int i = 1; i <= m; i++) {
    ll l, r, x;
    cin >> l >> r >> x;
    c[i] = mp(r, x);
    q[l].pb(i);
  }
  for (int i = n; i >= 1; i--) {
    while (sz(v) && a[v.back()] <= a[i]) v.pop_back();
    w[i] = (sz(v) ? v.back() : n + 1) - 1;
    v.pb(i);
  }
  for (int i = n; i >= 1; i--) {
    for (auto j : q[i]) d[j] = (get(i, c[j].F) <= c[j].S);
    for (int j = i + 1; j <= w[i]; j++) b[j] = max(b[j], a[i] + a[j]);
  }
  for (int i = 1; i <= m; i++) cout << d[i] << "\n";
    // endl
#ifndef ONLINE_JUDGE
  cerr << "\nTime elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
#endif
  return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'void ioi(std::string)':
sortbooks.cpp:26:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |   freopen((name + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sortbooks.cpp:27:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   freopen((name + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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