oj.uz

답안 #905718

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
905718 2024-01-13T04:26:23 Z nguyentunglam 새 집 (APIO18_new_home) C++17
0 / 100
 5000 ms 320292 KB 
#include<bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define endl "\n"
using namespace std;

const int N = 3e5 + 10;

int n, k, q;

int x[N * 3], t[N], a[N], b[N], cost[N], c[N], y[N], ans[N];

int pre[N * 3], nxt[N * 3];

vector<int> rrh, open[N], close[N], event[N];

set<pair<int, int> > s[N];

bool alive[N * 3];

bool bug;

struct IT {
  int type;
  priority_queue<pair<int, int> > T[N << 2];
  void up(int s, int l, int r, int from, int to, pair<int, int> tmp) {
    if (l > to || r < from) return;
    if (from <= l && r <= to) {
      T[s].push(tmp);
      return;
    }
    int mid = l + r >> 1;
    up(s << 1, l, mid, from, to, tmp);
    up(s << 1 | 1, mid + 1, r, from, to, tmp);
  }

  int get(int s, int l, int r, int pos, int _pos) {
    int ret = 0;
    while (!T[s].empty()) {
      int i = T[s].top().second;
      int j = type ? pre[i] : nxt[i];
//      cout << abs(x[i] - _pos) << " " << abs(x[j] - _pos) << endl;
      if (alive[i] == 0 || abs(x[i] - _pos) > abs(x[j] - _pos)) T[s].pop();
      else if (x[i] == x[j]) T[s].pop();
      else {
//        cout << i << " " << j << " " << type << " " << pre[4] << " " << alive[i] << endl;
        ret = max(ret, abs(x[i] - _pos));
//        if (type) cout << x[i] << " " << i << " " << abs(x[i] - _pos) << " " << j << endl;
        break;
      }
    }
//    if (bug) {
//      if (!T[s].empty()) cout << T[s].top().second << endl;
//    }
    if (l == r) return ret;
    int mid = l + r >> 1;
    if (pos <= mid) return max(ret, get(s << 1, l, mid, pos, _pos));
    return max(ret, get(s << 1 | 1, mid + 1, r, pos, _pos));
  }
} it[2];

void compress () {
  sort(all(rrh));
  rrh.resize(unique(all(rrh)) - rrh.begin());
}

int id (int x) {
  return upper_bound(all(rrh), x) - rrh.begin();
}

int32_t main() {
  #define task ""

  cin.tie(0) -> sync_with_stdio(0);

  if (fopen("task.inp", "r")) {
    freopen("task.inp", "r", stdin);
    freopen("task.out", "w", stdout);
  }

  if (fopen(task".inp", "r")) {
    freopen (task".inp", "r", stdin);
    freopen (task".out", "w", stdout);
  }

  it[0].type = 0;
  it[1].type = 1;

  cin >> n >> k >> q;

  for(int i = 1; i <= n; i++) cin >> x[i] >> t[i] >> a[i] >> b[i];

  for(int i = 1; i <= q; i++) cin >> c[i] >> y[i];

  for(int i = 1; i <= n; i++) {
    rrh.push_back(a[i]);
    rrh.push_back(b[i]);
  }
  for(int i = 1; i <= q; i++) rrh.push_back(y[i]);

  compress();

  for(int i = 1; i <= n; i++) {
    a[i] = id(a[i]);
    b[i] = id(b[i]);
    open[a[i]].push_back(i);
    close[b[i]].push_back(i);
  }

  for(int i = 1; i <= q; i++) {
    y[i] = id(y[i]);
    event[y[i]].push_back(i);
  }

  int m = rrh.size();

  rrh.clear();
  for(int i = 1; i <= q; i++) rrh.push_back(c[i]);
  compress();

  int cnt = n;
  int sz = rrh.size();

  for(int i = 1; i <= k; i++) {
    x[cnt + 1] = -2e9;
    x[cnt + 2] = 2e9;
    alive[cnt + 1] = alive[cnt + 2] = 1;
    s[i].insert({x[cnt + 1], cnt + 1});
    s[i].insert({x[cnt + 2], cnt + 2});
    it[1].up(1, 1, sz, 1, sz, make_pair(x[cnt + 2], cnt + 2));
    nxt[cnt + 1] = cnt + 2;
    pre[cnt + 2] = cnt + 1;
    cnt += 2;
  }


  for(int cur = 1; cur <= m; cur++) {
    for(int &j : open[cur]) {
      auto iter = s[t[j]].lower_bound(make_pair(x[j], j));
      int to = iter -> second;
      --iter;
      int from = iter -> second;
      int L = id(x[from] - 1) + 1, R = id(x[to]), pos = id(x[j]);
      int middle;
      middle = id(x[from] + x[j] >> 1);

//      if (j == 1) cout << from << " " << to << endl;

      it[0].up(1, 1, sz, L, middle, make_pair(-x[from], from));
      it[1].up(1, 1, sz, middle + 1, pos, make_pair(x[j], j));

      middle = id(x[j] + x[to] >> 1);


      it[0].up(1, 1, sz, pos, middle, make_pair(-x[j], j));
      it[1].up(1, 1, sz, middle + 1, R, make_pair(x[to], to));

//      cout << pos << " " << middle << endl;

      nxt[from] = j;
      pre[j] = from;
      nxt[j] = to;
      pre[to] = j;
      s[t[j]].insert({x[j], j});
      alive[j] = 1;
    }
    for(int &j : event[cur]) {
      int cost1 = it[0].get(1, 1, sz, id(c[j]), c[j]);
      int cost2 = it[1].get(1, 1, sz, id(c[j]), c[j]);
      ans[j] = max(cost1, cost2);
    }
    for(int &j : close[cur]) {
      auto iter = s[t[j]].find(make_pair(x[j], j));
      ++iter;
      int to = iter -> second;
      --iter; --iter;
      int from = iter -> second;

      int L = id(x[from] - 1) + 1, R = id(x[to]), middle = id(x[from] + x[to] >> 1);

      it[0].up(1, 1, sz, L, middle, make_pair(-x[from], from));
      it[1].up(1, 1, sz, middle + 1, R, make_pair(x[to], to));
      nxt[from] = to;
      pre[to] = from;
      s[t[j]].erase(s[t[j]].find(make_pair(x[j], j)));
      alive[j] = 0;
    }
  }

  for(int i = 1; i <= q; i++) {
    if (ans[i] > 1e8) ans[i] = -1;
    cout << ans[i] << endl;
  }
}

Compilation message

new_home.cpp: In member function 'void IT::up(int, int, int, int, int, std::pair<int, int>)':
new_home.cpp:31:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   31 |     int mid = l + r >> 1;
      |               ~~^~~
new_home.cpp: In member function 'int IT::get(int, int, int, int, int)':
new_home.cpp:55:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   55 |     int mid = l + r >> 1;
      |               ~~^~~
new_home.cpp: In function 'int32_t main()':
new_home.cpp:144:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  144 |       middle = id(x[from] + x[j] >> 1);
      |                   ~~~~~~~~^~~~~~
new_home.cpp:151:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  151 |       middle = id(x[j] + x[to] >> 1);
      |                   ~~~~~^~~~~~~
new_home.cpp:178:71: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  178 |       int L = id(x[from] - 1) + 1, R = id(x[to]), middle = id(x[from] + x[to] >> 1);
      |                                                               ~~~~~~~~^~~~~~~
new_home.cpp:76:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |     freopen("task.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:77:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |     freopen("task.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:81:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |     freopen (task".inp", "r", stdin);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:82:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |     freopen (task".out", "w", stdout);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 125784 KB Output is correct
2 Correct 35 ms 125776 KB Output is correct
3 Correct 39 ms 125796 KB Output is correct
4 Correct 34 ms 125784 KB Output is correct
5 Correct 38 ms 125776 KB Output is correct
6 Correct 37 ms 125788 KB Output is correct
7 Correct 42 ms 125784 KB Output is correct
8 Correct 38 ms 125784 KB Output is correct
9 Correct 36 ms 125976 KB Output is correct
10 Correct 38 ms 125800 KB Output is correct
11 Correct 39 ms 125784 KB Output is correct
12 Correct 37 ms 125912 KB Output is correct
13 Correct 36 ms 125908 KB Output is correct
14 Correct 37 ms 125892 KB Output is correct
15 Correct 41 ms 125932 KB Output is correct
16 Correct 37 ms 125792 KB Output is correct
17 Correct 37 ms 125940 KB Output is correct
18 Correct 38 ms 125788 KB Output is correct
19 Correct 39 ms 125912 KB Output is correct
20 Correct 41 ms 125920 KB Output is correct
21 Correct 35 ms 125904 KB Output is correct
22 Correct 39 ms 125784 KB Output is correct
23 Correct 36 ms 125784 KB Output is correct
24 Correct 38 ms 125780 KB Output is correct
25 Correct 37 ms 125780 KB Output is correct
26 Correct 37 ms 125780 KB Output is correct
27 Correct 36 ms 125784 KB Output is correct
28 Correct 38 ms 125860 KB Output is correct
29 Correct 38 ms 125780 KB Output is correct
30 Incorrect 41 ms 125700 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 125784 KB Output is correct
2 Correct 35 ms 125776 KB Output is correct
3 Correct 39 ms 125796 KB Output is correct
4 Correct 34 ms 125784 KB Output is correct
5 Correct 38 ms 125776 KB Output is correct
6 Correct 37 ms 125788 KB Output is correct
7 Correct 42 ms 125784 KB Output is correct
8 Correct 38 ms 125784 KB Output is correct
9 Correct 36 ms 125976 KB Output is correct
10 Correct 38 ms 125800 KB Output is correct
11 Correct 39 ms 125784 KB Output is correct
12 Correct 37 ms 125912 KB Output is correct
13 Correct 36 ms 125908 KB Output is correct
14 Correct 37 ms 125892 KB Output is correct
15 Correct 41 ms 125932 KB Output is correct
16 Correct 37 ms 125792 KB Output is correct
17 Correct 37 ms 125940 KB Output is correct
18 Correct 38 ms 125788 KB Output is correct
19 Correct 39 ms 125912 KB Output is correct
20 Correct 41 ms 125920 KB Output is correct
21 Correct 35 ms 125904 KB Output is correct
22 Correct 39 ms 125784 KB Output is correct
23 Correct 36 ms 125784 KB Output is correct
24 Correct 38 ms 125780 KB Output is correct
25 Correct 37 ms 125780 KB Output is correct
26 Correct 37 ms 125780 KB Output is correct
27 Correct 36 ms 125784 KB Output is correct
28 Correct 38 ms 125860 KB Output is correct
29 Correct 38 ms 125780 KB Output is correct
30 Incorrect 41 ms 125700 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 5104 ms 320292 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 447 ms 279424 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 125784 KB Output is correct
2 Correct 35 ms 125776 KB Output is correct
3 Correct 39 ms 125796 KB Output is correct
4 Correct 34 ms 125784 KB Output is correct
5 Correct 38 ms 125776 KB Output is correct
6 Correct 37 ms 125788 KB Output is correct
7 Correct 42 ms 125784 KB Output is correct
8 Correct 38 ms 125784 KB Output is correct
9 Correct 36 ms 125976 KB Output is correct
10 Correct 38 ms 125800 KB Output is correct
11 Correct 39 ms 125784 KB Output is correct
12 Correct 37 ms 125912 KB Output is correct
13 Correct 36 ms 125908 KB Output is correct
14 Correct 37 ms 125892 KB Output is correct
15 Correct 41 ms 125932 KB Output is correct
16 Correct 37 ms 125792 KB Output is correct
17 Correct 37 ms 125940 KB Output is correct
18 Correct 38 ms 125788 KB Output is correct
19 Correct 39 ms 125912 KB Output is correct
20 Correct 41 ms 125920 KB Output is correct
21 Correct 35 ms 125904 KB Output is correct
22 Correct 39 ms 125784 KB Output is correct
23 Correct 36 ms 125784 KB Output is correct
24 Correct 38 ms 125780 KB Output is correct
25 Correct 37 ms 125780 KB Output is correct
26 Correct 37 ms 125780 KB Output is correct
27 Correct 36 ms 125784 KB Output is correct
28 Correct 38 ms 125860 KB Output is correct
29 Correct 38 ms 125780 KB Output is correct
30 Incorrect 41 ms 125700 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 36 ms 125784 KB Output is correct
2 Correct 35 ms 125776 KB Output is correct
3 Correct 39 ms 125796 KB Output is correct
4 Correct 34 ms 125784 KB Output is correct
5 Correct 38 ms 125776 KB Output is correct
6 Correct 37 ms 125788 KB Output is correct
7 Correct 42 ms 125784 KB Output is correct
8 Correct 38 ms 125784 KB Output is correct
9 Correct 36 ms 125976 KB Output is correct
10 Correct 38 ms 125800 KB Output is correct
11 Correct 39 ms 125784 KB Output is correct
12 Correct 37 ms 125912 KB Output is correct
13 Correct 36 ms 125908 KB Output is correct
14 Correct 37 ms 125892 KB Output is correct
15 Correct 41 ms 125932 KB Output is correct
16 Correct 37 ms 125792 KB Output is correct
17 Correct 37 ms 125940 KB Output is correct
18 Correct 38 ms 125788 KB Output is correct
19 Correct 39 ms 125912 KB Output is correct
20 Correct 41 ms 125920 KB Output is correct
21 Correct 35 ms 125904 KB Output is correct
22 Correct 39 ms 125784 KB Output is correct
23 Correct 36 ms 125784 KB Output is correct
24 Correct 38 ms 125780 KB Output is correct
25 Correct 37 ms 125780 KB Output is correct
26 Correct 37 ms 125780 KB Output is correct
27 Correct 36 ms 125784 KB Output is correct
28 Correct 38 ms 125860 KB Output is correct
29 Correct 38 ms 125780 KB Output is correct
30 Incorrect 41 ms 125700 KB Output isn't correct
31 Halted 0 ms 0 KB -