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답안 #777258

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
777258 2023-07-08T22:45:27 Z tvladm2009 Examination (JOI19_examination) C++17
100 / 100
 1706 ms 123912 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
const int N = (int) 1e5 + 7;
const int INF = (int) 1e9;

mt19937 rng;

int gen() {
  return uniform_int_distribution<int>(INF)(rng);
}

struct treap {
  struct node {
    int val;
    int sz;
    int prio;
    node* left;
    node* right;

    node(int val_ = 0) {
      val = val_;
      sz = 1;
      prio = gen();
      left = NULL;
      right = NULL;
    }
  };

  int getsize(node* &root) {
    if (root == NULL) {
      return 0;
    } else {
      return root->sz;
    }
  }

  void computesize(node* &root) {
    root->sz = 1 + getsize(root->left) + getsize(root->right);
  }

  pair<node*, node*> split(node* &root, int target) {
    if (root == NULL) {
      return {NULL, NULL};
    } else if (root->val <= target) {
      pair<node*, node*> sol = split(root->right, target);
      root->right = sol.first;
      computesize(root);
      return {root, sol.second};
    } else {
      pair<node*, node*> sol = split(root->left, target);
      root->left = sol.second;
      computesize(root);
      return {sol.first, root};
    }
  }

  node* _merge(node* &a, node* &b) {
    if (a == NULL && b == NULL) {
      return NULL;
    } else if (a == NULL) {
      return b;
    } else if (b == NULL) {
      return a;
    } else if (a->prio < b->prio) {
      a->right = _merge(a->right, b);
      computesize(a);
      return a;
    } else {
      b->left = _merge(a, b->left);
      computesize(b);
      return b;
    }
  }

  node* root;
  treap() {
    root = NULL;
  }
  void _insert(int val) {
    pair<node*, node*> sol = split(root, val);
    node* newnode = new node(val);
    sol.first = _merge(sol.first, newnode);
    root = _merge(sol.first, sol.second);
  }
  int _query(int val) {
    pair<node*, node*> sol = split(root, val - 1);
    int ret = getsize(sol.second);
    root = _merge(sol.first, sol.second);
    return ret;
  }
};

struct T {
  int type;
  int x, y, z;
  int id;
};

bool operator < (const T &a, const T &b) {
  if (a.x != b.x) {
    return a.x > b.x;
  } else {
    return a.type < b.type;
  }
}

vector<T> events;
int sol[N];
int n, q;

struct segtree {
  vector<treap> segt;

  segtree(int n) {
    segt.resize(4 * n + 1);
  }

  void update(int v, int tl, int tr, int x, int val) {
    segt[v]._insert(val);
    if (tl == tr) {
      return;
    }
    int tm = (tl + tr) / 2;
    if (x <= tm) {
      update(2 * v, tl, tm, x, val);
    } else {
      update(2 * v + 1, tm + 1, tr, x, val);
    }
  }

  int query(int v, int tl, int tr, int x, int y, int val) {
    if (x <= tl && tr <= y) {
      return segt[v]._query(val);
    } else {
      int tm = (tl + tr) / 2;
      if (x <= tm & y <= tm) {
        return query(2 * v, tl, tm, x, y, val);
      } else if (tm + 1 <= x && tm + 1 <= y) {
        return query(2 * v + 1, tm + 1, tr, x, y, val);
      } else {
        return query(2 * v, tl, tm, x, tm, val) + query(2 * v + 1, tm + 1, tr, tm + 1, y, val);
      }
    }
  }
};

signed main() {
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

  // freopen("input", "r", stdin);

  cin >> n >> q;
  for (int i = 1; i <= n; i++) {
    int x, y;
    cin >> x >> y;
    events.push_back({1, x, y, x + y, i});
  }
  for (int i = 1; i <= q; i++) {
    int x, y, z;
    cin >> x >> y >> z;
    events.push_back({2, x, y, z, i});
  }
  sort(events.begin(), events.end());
  {
    vector<int> vals;
    for (auto &e : events) {
      vals.push_back(e.x);
      vals.push_back(e.y);
      vals.push_back(e.z);
    }
    sort(vals.begin(), vals.end());
    map<int, int> mp;
    int cnt = 0;
    for (auto &i : vals) {
      if (mp[i] == 0) {
        mp[i] = ++cnt;
      }
    }
    for (auto &e : events) {
      e.x = mp[e.x];
      e.y = mp[e.y];
      e.z = mp[e.z];
    }
    n = cnt;
  }
  segtree tree(n);
  for (auto &e : events) {
    if (e.type == 1) {
      tree.update(1, 1, n, e.y, e.z);
    } else {
      sol[e.id] = tree.query(1, 1, n, e.y, n, e.z);
    }
  }
  for (int i = 1; i <= q; i++) {
    cout << sol[i] << " ";
  }
  return 0;
}

Compilation message

examination.cpp: In member function 'int segtree::query(int, int, int, int, int, int)':
examination.cpp:139:13: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
  139 |       if (x <= tm & y <= tm) {
      |           ~~^~~~~

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 17 ms 3212 KB Output is correct
8 Correct 17 ms 3220 KB Output is correct
9 Correct 19 ms 3308 KB Output is correct
10 Correct 13 ms 2924 KB Output is correct
11 Correct 15 ms 2904 KB Output is correct
12 Correct 7 ms 1260 KB Output is correct
13 Correct 14 ms 3184 KB Output is correct
14 Correct 14 ms 3168 KB Output is correct
15 Correct 15 ms 3088 KB Output is correct
16 Correct 13 ms 2628 KB Output is correct
17 Correct 12 ms 2952 KB Output is correct
18 Correct 3 ms 876 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1043 ms 96688 KB Output is correct
2 Correct 1103 ms 96788 KB Output is correct
3 Correct 1098 ms 96676 KB Output is correct
4 Correct 566 ms 93092 KB Output is correct
5 Correct 1396 ms 92692 KB Output is correct
6 Correct 301 ms 32172 KB Output is correct
7 Correct 1113 ms 96516 KB Output is correct
8 Correct 1157 ms 96540 KB Output is correct
9 Correct 1006 ms 96076 KB Output is correct
10 Correct 1324 ms 91640 KB Output is correct
11 Correct 510 ms 94008 KB Output is correct
12 Correct 92 ms 19828 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1043 ms 96688 KB Output is correct
2 Correct 1103 ms 96788 KB Output is correct
3 Correct 1098 ms 96676 KB Output is correct
4 Correct 566 ms 93092 KB Output is correct
5 Correct 1396 ms 92692 KB Output is correct
6 Correct 301 ms 32172 KB Output is correct
7 Correct 1113 ms 96516 KB Output is correct
8 Correct 1157 ms 96540 KB Output is correct
9 Correct 1006 ms 96076 KB Output is correct
10 Correct 1324 ms 91640 KB Output is correct
11 Correct 510 ms 94008 KB Output is correct
12 Correct 92 ms 19828 KB Output is correct
13 Correct 1374 ms 99344 KB Output is correct
14 Correct 1197 ms 97216 KB Output is correct
15 Correct 1072 ms 96692 KB Output is correct
16 Correct 717 ms 93624 KB Output is correct
17 Correct 1566 ms 93396 KB Output is correct
18 Correct 295 ms 32232 KB Output is correct
19 Correct 1387 ms 99516 KB Output is correct
20 Correct 1334 ms 98284 KB Output is correct
21 Correct 1580 ms 99240 KB Output is correct
22 Correct 1267 ms 91516 KB Output is correct
23 Correct 537 ms 94020 KB Output is correct
24 Correct 96 ms 19912 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 17 ms 3212 KB Output is correct
8 Correct 17 ms 3220 KB Output is correct
9 Correct 19 ms 3308 KB Output is correct
10 Correct 13 ms 2924 KB Output is correct
11 Correct 15 ms 2904 KB Output is correct
12 Correct 7 ms 1260 KB Output is correct
13 Correct 14 ms 3184 KB Output is correct
14 Correct 14 ms 3168 KB Output is correct
15 Correct 15 ms 3088 KB Output is correct
16 Correct 13 ms 2628 KB Output is correct
17 Correct 12 ms 2952 KB Output is correct
18 Correct 3 ms 876 KB Output is correct
19 Correct 1043 ms 96688 KB Output is correct
20 Correct 1103 ms 96788 KB Output is correct
21 Correct 1098 ms 96676 KB Output is correct
22 Correct 566 ms 93092 KB Output is correct
23 Correct 1396 ms 92692 KB Output is correct
24 Correct 301 ms 32172 KB Output is correct
25 Correct 1113 ms 96516 KB Output is correct
26 Correct 1157 ms 96540 KB Output is correct
27 Correct 1006 ms 96076 KB Output is correct
28 Correct 1324 ms 91640 KB Output is correct
29 Correct 510 ms 94008 KB Output is correct
30 Correct 92 ms 19828 KB Output is correct
31 Correct 1374 ms 99344 KB Output is correct
32 Correct 1197 ms 97216 KB Output is correct
33 Correct 1072 ms 96692 KB Output is correct
34 Correct 717 ms 93624 KB Output is correct
35 Correct 1566 ms 93396 KB Output is correct
36 Correct 295 ms 32232 KB Output is correct
37 Correct 1387 ms 99516 KB Output is correct
38 Correct 1334 ms 98284 KB Output is correct
39 Correct 1580 ms 99240 KB Output is correct
40 Correct 1267 ms 91516 KB Output is correct
41 Correct 537 ms 94020 KB Output is correct
42 Correct 96 ms 19912 KB Output is correct
43 Correct 1611 ms 123880 KB Output is correct
44 Correct 1659 ms 123912 KB Output is correct
45 Correct 1518 ms 123816 KB Output is correct
46 Correct 840 ms 113348 KB Output is correct
47 Correct 1581 ms 113108 KB Output is correct
48 Correct 346 ms 38048 KB Output is correct
49 Correct 1706 ms 123840 KB Output is correct
50 Correct 1575 ms 123908 KB Output is correct
51 Correct 1697 ms 123724 KB Output is correct
52 Correct 1535 ms 108248 KB Output is correct
53 Correct 541 ms 102940 KB Output is correct