Submission #341537

#	Time	Username	Problem	Language	Result	Execution time	Memory
341537		VROOM_VARUN	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	2598 ms	79640 KiB

sortbooks

/*
ID: varunra2
LANG: C++
TASK: books
*/

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

#ifdef DEBUG
#include "lib/debug.h"
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define debug_arr(...) \
  cerr << "[" << #__VA_ARGS__ << "]:", debug_arr(__VA_ARGS__)
#pragma GCC diagnostic ignored "-Wsign-compare"
//#pragma GCC diagnostic ignored "-Wunused-parameter"
//#pragma GCC diagnostic ignored "-Wunused-variable"
#else
#define debug(...) 42
#endif

#define EPS 1e-9
#define IN(A, B, C) assert(B <= A && A <= C)
#define INF (int)1e9
#define MEM(a, b) memset(a, (b), sizeof(a))
#define MOD 1000000007
#define MP make_pair
#define PB push_back
#define all(cont) cont.begin(), cont.end()
#define rall(cont) cont.end(), cont.begin()
#define x first
#define y second

const double PI = acos(-1.0);
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef map<int, int> MPII;
typedef multiset<int> MSETI;
typedef set<int> SETI;
typedef set<string> SETS;
typedef vector<int> VI;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef vector<string> VS;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto& a : x)
#define sz(x) (int)(x).size()
typedef pair<int, int> pii;
typedef vector<int> vi;
#pragma GCC diagnostic ignored "-Wsign-compare"
// util functions

struct node {
  int mx = 0;
  int retl = 0;
  int retr = 0;
  int ret = 0;

  void deb() {
    debug(mx);
    debug(retl);
    debug(retr);
    debug(ret);
  }
} bad, cur, a, b;

void comb(node& a, node& l, node& r) {
  a.mx = max(l.mx, r.mx);
  if (l.ret > r.ret) {
    a.retl = l.retl;
    a.retr = l.retr;
    a.ret = l.ret;
  } else {
    a.retl = r.retl;
    a.retr = r.retr;
    a.ret = r.ret;
  }
  if (l.mx > r.retr and l.mx + r.retr > max(l.ret, r.ret)) {
    a.retl = l.mx;
    a.retr = r.retr;
    a.ret = l.mx + r.retr;
  }
}

void sett(node& a, int val) {
  a.mx = val;
  a.retr = val;
  a.retl = 0;
  a.ret = 0;
}

struct segtree {
  int siz;
  int n;
  vector<node> st;
  VI vals;

  void build(int node, int l, int r) {
    if (l > r) return;
    if (l == r) {
      sett(st[node], vals[l]);
      return;
    }
    int mid = (l + r) / 2;
    build(2 * node + 1, l, mid);
    build(2 * node + 2, mid + 1, r);
    comb(st[node], st[2 * node + 1], st[2 * node + 2]);
  }

  void init(VI& _vals) {
    n = sz(_vals);
    st.resize(4 * n);
    vals = _vals;
    build(0, 0, n - 1);
  }

  node qry(int tl, int tr, int node, int l, int r) {
    if (l > tr) return bad;
    if (r < tl) return bad;
    if (l > r) return bad;
    if (l >= tl and r <= tr) {
      return st[node];
    }
    int mid = (l + r) / 2;
    a = qry(tl, tr, 2 * node + 1, l, mid);
    b = qry(tl, tr, 2 * node + 2, mid + 1, r);
    // a.deb();
    // b.deb();
    // debug("here");
    comb(cur, a, b);
    return cur;
  }

  int qry(int l, int r) {
    cur = qry(l, r, 0, 0, n - 1);
    // cur.deb();
    return qry(l, r, 0, 0, n - 1).ret;
  }
};

int main() {
  // #ifndef ONLINE_JUDGE
  // freopen("books.in", "r", stdin);
  // freopen("books.out", "w", stdout);
  // #endif
  cin.sync_with_stdio(0);
  cin.tie(0);

  int n, m;
  cin >> n >> m;

  VI vals(n);

  for (int i = 0; i < n; i++) {
    cin >> vals[i];
  }

  segtree st;

  st.init(vals);

  for (int i = 0; i < m; i++) {
    int l, r, val;
    cin >> l >> r >> val;
    l--, r--;
    int cur = st.qry(l, r);
    // debug(cur);
    cout << (cur <= val ? 1 : 0) << '\n';
  }

  return 0;
}

Compilation message (stderr)

sortbooks.cpp: In member function 'void node::deb()':
sortbooks.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
sortbooks.cpp:62:5: note: in expansion of macro 'debug'
   62 |     debug(mx);
      |     ^~~~~
sortbooks.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
sortbooks.cpp:63:5: note: in expansion of macro 'debug'
   63 |     debug(retl);
      |     ^~~~~
sortbooks.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
sortbooks.cpp:64:5: note: in expansion of macro 'debug'
   64 |     debug(retr);
      |     ^~~~~
sortbooks.cpp:19:20: warning: statement has no effect [-Wunused-value]
   19 | #define debug(...) 42
      |                    ^~
sortbooks.cpp:65:5: note: in expansion of macro 'debug'
   65 |     debug(ret);
      |     ^~~~~

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