Submission #23220

#	Time	Username	Problem	Language	Result	Execution time	Memory
23220		RockyB	Wall (IOI14_wall)	C++14	0 / 100	3000 ms	154772 KiB

wall

#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>

#include "wall.h"

#define f first
#define s second

#define pb push_back
#define pp pop_back
#define mp make_pair

#define sz(x) (int)x.size()
#define sqr(x) ((x) * 1ll * (x))
#define all(x) x.begin(), x.end()

#define rep(i, l, r) for (int i = l; i <= r; i++)
#define per(i, l, r) for (int i = l; i >= r; i--)

#define dbg(x) cerr << (#x) << " --> " << (x) << nl;
#define Kazakhstan ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);

#define nl '\n'
#define ioi exit(0);

#define Toktama ""

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef tree < pair <int, int>, null_type, less < pair <int, int> >, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

const int N = 1e6 + 7, inf = 1e9 + 7, mod = 1e9 + 7;
const ll linf = (ll)1e18 + 7;
const int dx[] = {-1, 0, 1, 0, 1, -1, -1, 1}, dy[] = {0, 1, 0, -1, 1, -1, 1, -1};

int n, k;
int type[N], l[N], r[N], x[N], ans[N];
pair <int, int> t[N << 2];

struct node {
  int x, id;
  node() {}
  node(int x, int id) : x(x), id(id) {}
};
struct _upd {
  node u[3];
  _upd() {
    u[1] = node(-inf, -1);
    u[2] = node(inf, -1);
  }
} u[N << 2];

pair <int, int> combo(pair <int, int> l, pair <int, int> r) {
  return {min(l.f, r.f), max(l.s, r.s)};
}
void push(int v, int tl, int tr, int deep = 0) {
  if (!deep && tl != tr) {
    int tm = tl + tr >> 1;
    push(v + v, tl, tm, 1);
    push(v + v + 1, tm + 1, tr);
  }

  bool ok = 0;
  if (u[v].u[2].id == 4 && tl == 4 && tr == 6) ok = 1;

  if (u[v].u[1].id != -1 && u[v].u[2].id != -1) {
    if (u[v].u[1].id > u[v].u[2].id) {
      int x = u[v].u[2].x;
      t[v + v].s = min(t[v + v].s, x);
      t[v + v].f = min(t[v + v].f, t[v + v].s);
      t[v + v + 1].s = min(t[v + v + 1].s, x);
      t[v + v + 1].f = min(t[v + v + 1].f, t[v + v + 1].s);
      x = u[v].u[1].x;
      t[v + v].f = max(t[v + v].f, x);
      t[v + v].s = max(t[v + v].s, t[v + v].f);
      t[v + v + 1].f = max(t[v + v + 1].f, x);
      t[v + v + 1].s = max(t[v + v + 1].s, t[v + v + 1].f);
    }
    else {
      int x = u[v].u[1].x;
      t[v + v].f = max(t[v + v].f, x);
      t[v + v].s = max(t[v + v].s, t[v + v].f);
      t[v + v + 1].f = max(t[v + v + 1].f, x);
      t[v + v + 1].s = max(t[v + v + 1].s, t[v + v + 1].f);
      x = u[v].u[2].x;
      t[v + v].s = min(t[v + v].s, x);
      t[v + v].f = min(t[v + v].f, t[v + v].s);
      t[v + v + 1].s = min(t[v + v + 1].s, x);
      t[v + v + 1].f = min(t[v + v + 1].f, t[v + v + 1].s);
    }
    //if (ok) cout << u[v].u[2].x << ' ' << u[v + v].u[2].x << nl;
    if (u[v + v].u[1].x <= u[v].u[1].x) u[v + v].u[1] = u[v].u[1];
    if (u[v + v].u[2].x >= u[v].u[2].x) u[v + v].u[2] = u[v].u[2];
    if (u[v + v + 1].u[1].x <= u[v].u[1].x) u[v + v + 1].u[1] = u[v].u[1];
    if (u[v + v + 1].u[2].x >= u[v].u[2].x) u[v + v + 1].u[2] = u[v].u[2];

    /*
    {
      u[v + v].u[1] = u[v].u[1];
      u[v + v].u[2] = u[v].u[2];
      u[v + v + 1].u[1] = u[v].u[1];
      u[v + v + 1].u[2] = u[v].u[2];
    }*/
    u[v] = _upd();
  }
  else if (u[v].u[1].id != -1) {
    int x = u[v].u[1].x;
    t[v + v].f = max(t[v + v].f, x);
    t[v + v].s = max(t[v + v].s, t[v + v].f);
    t[v + v + 1].f = max(t[v + v + 1].f, x);
    t[v + v + 1].s = max(t[v + v + 1].s, t[v + v + 1].f);

    if (u[v + v].u[1].x <= u[v].u[1].x) u[v + v].u[1] = u[v].u[1];
    if (u[v + v + 1].u[1].x <= u[v].u[1].x) u[v + v + 1].u[1] = u[v].u[1];

    /*
    {
      u[v + v].u[1] = u[v].u[1];
      u[v + v + 1].u[1] = u[v].u[1];
    }*/

    u[v] = _upd();
  }
  else if (u[v].u[2].id != -1) {
    int x = u[v].u[2].x;
    t[v + v].s = min(t[v + v].s, x);
    t[v + v].f = min(t[v + v].f, t[v + v].s);
    t[v + v + 1].s = min(t[v + v + 1].s, x);
    t[v + v + 1].f = min(t[v + v + 1].f, t[v + v + 1].s);

    if (u[v + v].u[2].x >= u[v].u[2].x) u[v + v].u[2] = u[v].u[2];
    if (u[v + v + 1].u[2].x >= u[v].u[2].x) u[v + v + 1].u[2] = u[v].u[2];

    /*
    {
      u[v + v].u[2] = u[v].u[2];
      u[v + v + 1].u[2] = u[v].u[2];
    }*/

    u[v] = _upd();
  }
}
void upd(int l, int r, int type, int x, int id, int v, int tl, int tr) {
  if (l <= tl && tr <= r) {
    if (type == 1) {
      t[v].f = max(t[v].f, x);
      t[v].s = max(t[v].s, t[v].f);
      if (u[v].u[1].x <= x) u[v].u[1] = node(x, id), u[v].u[2] = node(inf, -1);
    }
    else {
      t[v].s = min(t[v].s, x);
      t[v].f = min(t[v].f, t[v].s);
      if (u[v].u[2].x >= x) u[v].u[2] = node(x, id), u[v].u[1] = node(-inf, -1);
    }
    return;
  }
  if (tl > r || tr < l) return;
  int tm = tl + tr >> 1;
  push(v, tl, tr);
  upd(l, r, type, x, id, v + v, tl, tm);
  upd(l, r, type, x, id, v + v + 1, tm + 1, tr);
  t[v] = combo(t[v + v], t[v + v + 1]);
}
pair <int, int> get(int l, int r, int v, int tl, int tr) {
  if (l <= tl && tr <= r) return t[v];
  if (tl > r || tr < l) return {inf, -inf};
  int tm = tl + tr >> 1;
  push(v, tl, tr);
  return combo(get(l, r, v + v, tl, tm), get(l, r, v + v + 1, tm + 1, tr));
}
void bye(int v, int tl, int tr) {
  //cout << tl << ' ' << tr << ' ' << u[v].u[1].x << ' ' << u[v].u[2].x << nl;

  if (tl == tr) {

    return;
  }
  int tm = tl + tr >> 1;
  bye(v + v, tl, tm);
  bye(v + v + 1, tm + 1, tr);
}

void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]) {
  rep(i, 0, k - 1) {
    upd(left[i], right[i], op[i], height[i], i, 1, 0, n - 1);
    //if (i == 4) break;
  }

//  cout << get(2, 3, 1, 0, n - 1).s << nl;
//  ioi
  rep(i, 0, n - 1)
    finalHeight[i] = get(i, i, 1, 0, n - 1).f;
}
/*
int main() {
  #ifndef Toktama
    freopen (Toktama".in", "r", stdin);
    freopen (Toktama".out", "w", stdout);
  #endif
  freopen (".in", "r", stdin);
  //freopen ("gen.in", "r", stdin);
  //freopen ("a.out", "w", stdout);
  scanf ("%d%d", &n, &k);
  rep(i, 0, k - 1)
    scanf ("%d%d%d%d", &type[i], &l[i], &r[i], &x[i]);
  buildWall(n, k, type, l, r, x, ans);
  rep(i, 0, n - 1)
    printf ("%d ", ans[i]);

  {
    cout << nl;
    //bye(1, 0, n - 1);
  }

  ioi
}
*/

Compilation message (stderr)

wall.cpp: In function 'void push(int, int, int, int)':
wall.cpp:65:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int tm = tl + tr >> 1;
                 ^
wall.cpp:70:8: warning: variable 'ok' set but not used [-Wunused-but-set-variable]
   bool ok = 0;
        ^
wall.cpp: In function 'void upd(int, int, int, int, int, int, int, int)':
wall.cpp:165:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int tm = tl + tr >> 1;
               ^
wall.cpp: In function 'std::pair<int, int> get(int, int, int, int, int)':
wall.cpp:174:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int tm = tl + tr >> 1;
               ^
wall.cpp: In function 'void bye(int, int, int)':
wall.cpp:185:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int tm = tl + tr >> 1;
               ^

• Subtask 1: 0 / 8
• Subtask 2: 0 / 24
• Subtask 3: 0 / 29
• Subtask 4: 0 / 39