oj.uz

Submission #906018

# Submission time Handle Problem Language Result Execution time Memory
906018 2024-01-13T09:46:22 Z nguyentunglam New Home (APIO18_new_home) C++17
57 / 100
 4415 ms 517740 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, sz;

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 * 3], close[N * 3], event[N * 3];

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

bool alive[N * 3];

bool bug;

priority_queue<pair<int, int> > bit0[N], bit1[N];

void add0 (int pos, int border, pair<int, int> tmp) {
  while (pos >= border) {
    bit0[pos].push(tmp);
    pos -= pos & -pos;
  }
}

int get0(int pos, int _pos) {
  int ret = 0;
  while (pos <= sz) {
    while (!bit0[pos].empty()) {
      int i = bit0[pos].top().second;
      int j = nxt[i];
      if (alive[i] == 0 || x[i] == x[j] || abs(x[i] - _pos) > abs(x[j] - _pos)) bit0[pos].pop();
      else {
        ret = max(ret, _pos - x[i]);
        break;
      }
    }
    pos += pos & -pos;
  }
  return ret;
}

void add1 (int pos, int border, pair<int, int> tmp) {
  while (pos <= border) {
    bit1[pos].push(tmp);
    pos += pos & -pos;
  }
}

int get1(int pos, int _pos) {
  int ret = 0;
  while (pos) {
    while (!bit1[pos].empty()) {
      int i = bit1[pos].top().second;
      int j = pre[i];
      if (alive[i] == 0 || x[i] == x[j] || abs(x[i] - _pos) > abs(x[j] - _pos)) bit1[pos].pop();
      else {
        ret = max(ret, x[i] - _pos);
        break;
      }
    }
    pos -= pos & -pos;
  }
  return ret;
}

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);
  }

  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;
  sz = rrh.size();

  for(int i = 1; i <= k; i++) {
    x[cnt + 1] = -1e9;
    x[cnt + 2] = 1e9;
    alive[cnt + 1] = alive[cnt + 2] = 1;
    s[i].insert({x[cnt + 1], cnt + 1});
    s[i].insert({x[cnt + 2], cnt + 2});
    add1(1, sz, make_pair(x[cnt + 2], cnt + 2));
    nxt[cnt + 1] = cnt + 2;
    pre[cnt + 2] = cnt + 1;
    cnt += 2;
  }

  double timer = 0;

  int st = 0;
  int ed = 0;
//  timer += 1.0 * (ed - st) / CLOCKS_PER_SEC;

  for(int cur = 1; cur <= m; cur++) {
    assert(timer <= 1.0);
    for(int &j : open[cur]) {
      int st = clock();
      auto iter = s[t[j]].lower_bound(make_pair(x[j], j));
      int to = iter -> second;
      --iter;
      int from = iter -> second;
      int ed = clock();
      timer += 1.0 * (ed - st) / CLOCKS_PER_SEC;
      int middle;
      middle = id(x[from] + x[j] >> 1);
      int L = id(x[from] - 1) + 1, R = id(x[to]), pos = id(x[j]);

      add0(middle, L, make_pair(-x[from], from));
      add1(middle + 1, pos, make_pair(x[j], j));

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

      add0(middle, pos, make_pair(-x[j], j));
      add1(middle + 1, R, make_pair(x[to], to));

      nxt[from] = j;
      pre[j] = from;
      nxt[j] = to;
      pre[to] = j;
        st = clock();
      s[t[j]].insert({x[j], j});
      ed = clock();
      timer += 1.0 * (ed - st) / CLOCKS_PER_SEC;
      alive[j] = 1;
    }
    for(int &j : event[cur]) {
      int tmp = id(c[j]);
      int cost1 = get0(tmp, c[j]);
      int cost2 = get1(tmp, c[j]);
      ans[j] = max(cost1, cost2);
    }
    for(int &j : close[cur]) {
      st = clock();
      auto iter = s[t[j]].find(make_pair(x[j], j));
      ++iter;
      int to = iter -> second;
      --iter; --iter;
      int from = iter -> second;
      ed = clock();
      timer += 1.0 * (ed - st) / CLOCKS_PER_SEC;

      int L = id(x[from] - 1) + 1, R = id(x[to]), middle = id(x[from] + x[to] >> 1);
      add0(middle, L, make_pair(-x[from], from));
      add1(middle + 1, R, make_pair(x[to], to));


      nxt[from] = to;
      pre[to] = from;
      st = clock();
      s[t[j]].erase(s[t[j]].find(make_pair(x[j], j)));
      ed = clock();
      timer += 1.0 * (ed - st) / CLOCKS_PER_SEC;
      alive[j] = 0;
    }
  }

  cerr << timer << endl;
  cerr << 1.0 * clock() / CLOCKS_PER_SEC << endl;

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

}

Compilation message

new_home.cpp: In function 'int32_t main()':
new_home.cpp:160:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  160 |       middle = id(x[from] + x[j] >> 1);
      |                   ~~~~~~~~^~~~~~
new_home.cpp:166:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  166 |       middle = id(x[j] + x[to] >> 1);
      |                   ~~~~~^~~~~~~
new_home.cpp:198:71: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  198 |       int L = id(x[from] - 1) + 1, R = id(x[to]), middle = id(x[from] + x[to] >> 1);
      |                                                               ~~~~~~~~^~~~~~~
new_home.cpp:87:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |     freopen("task.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:88:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |     freopen("task.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:92:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |     freopen (task".inp", "r", stdin);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:93:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |     freopen (task".out", "w", stdout);
      |     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 111196 KB Output is correct
2 Correct 33 ms 111196 KB Output is correct
3 Correct 33 ms 111196 KB Output is correct
4 Correct 33 ms 111196 KB Output is correct
5 Correct 35 ms 111448 KB Output is correct
6 Correct 35 ms 111452 KB Output is correct
7 Correct 35 ms 111648 KB Output is correct
8 Correct 35 ms 111448 KB Output is correct
9 Correct 35 ms 111628 KB Output is correct
10 Correct 35 ms 111452 KB Output is correct
11 Correct 36 ms 111452 KB Output is correct
12 Correct 38 ms 111452 KB Output is correct
13 Correct 35 ms 111440 KB Output is correct
14 Correct 34 ms 111444 KB Output is correct
15 Correct 34 ms 111372 KB Output is correct
16 Correct 35 ms 111444 KB Output is correct
17 Correct 35 ms 111444 KB Output is correct
18 Correct 35 ms 111440 KB Output is correct
19 Correct 38 ms 111872 KB Output is correct
20 Correct 35 ms 111452 KB Output is correct
21 Correct 33 ms 111364 KB Output is correct
22 Correct 35 ms 111628 KB Output is correct
23 Correct 35 ms 111444 KB Output is correct
24 Correct 36 ms 111592 KB Output is correct
25 Correct 35 ms 111656 KB Output is correct
26 Correct 35 ms 111416 KB Output is correct
27 Correct 35 ms 111448 KB Output is correct
28 Correct 34 ms 111440 KB Output is correct
29 Correct 35 ms 111440 KB Output is correct
30 Correct 35 ms 111448 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 111196 KB Output is correct
2 Correct 33 ms 111196 KB Output is correct
3 Correct 33 ms 111196 KB Output is correct
4 Correct 33 ms 111196 KB Output is correct
5 Correct 35 ms 111448 KB Output is correct
6 Correct 35 ms 111452 KB Output is correct
7 Correct 35 ms 111648 KB Output is correct
8 Correct 35 ms 111448 KB Output is correct
9 Correct 35 ms 111628 KB Output is correct
10 Correct 35 ms 111452 KB Output is correct
11 Correct 36 ms 111452 KB Output is correct
12 Correct 38 ms 111452 KB Output is correct
13 Correct 35 ms 111440 KB Output is correct
14 Correct 34 ms 111444 KB Output is correct
15 Correct 34 ms 111372 KB Output is correct
16 Correct 35 ms 111444 KB Output is correct
17 Correct 35 ms 111444 KB Output is correct
18 Correct 35 ms 111440 KB Output is correct
19 Correct 38 ms 111872 KB Output is correct
20 Correct 35 ms 111452 KB Output is correct
21 Correct 33 ms 111364 KB Output is correct
22 Correct 35 ms 111628 KB Output is correct
23 Correct 35 ms 111444 KB Output is correct
24 Correct 36 ms 111592 KB Output is correct
25 Correct 35 ms 111656 KB Output is correct
26 Correct 35 ms 111416 KB Output is correct
27 Correct 35 ms 111448 KB Output is correct
28 Correct 34 ms 111440 KB Output is correct
29 Correct 35 ms 111440 KB Output is correct
30 Correct 35 ms 111448 KB Output is correct
31 Correct 880 ms 141676 KB Output is correct
32 Correct 263 ms 118244 KB Output is correct
33 Correct 590 ms 131456 KB Output is correct
34 Correct 786 ms 141616 KB Output is correct
35 Correct 786 ms 138864 KB Output is correct
36 Correct 609 ms 132376 KB Output is correct
37 Correct 491 ms 132540 KB Output is correct
38 Correct 455 ms 127948 KB Output is correct
39 Correct 419 ms 129128 KB Output is correct
40 Correct 415 ms 127952 KB Output is correct
41 Correct 533 ms 137388 KB Output is correct
42 Correct 580 ms 137920 KB Output is correct
43 Correct 230 ms 118224 KB Output is correct
44 Correct 548 ms 137192 KB Output is correct
45 Correct 570 ms 134624 KB Output is correct
46 Correct 502 ms 128716 KB Output is correct
47 Correct 386 ms 134096 KB Output is correct
48 Correct 376 ms 132696 KB Output is correct
49 Correct 430 ms 134636 KB Output is correct
50 Correct 497 ms 137296 KB Output is correct
51 Correct 427 ms 133064 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4316 ms 297176 KB Output is correct
2 Correct 4415 ms 192232 KB Output is correct
3 Correct 3344 ms 340312 KB Output is correct
4 Correct 4086 ms 288712 KB Output is correct
5 Correct 3564 ms 164636 KB Output is correct
6 Correct 4046 ms 183184 KB Output is correct
7 Correct 2960 ms 313388 KB Output is correct
8 Correct 3402 ms 298776 KB Output is correct
9 Correct 3851 ms 282620 KB Output is correct
10 Correct 4143 ms 239220 KB Output is correct
11 Correct 1978 ms 199764 KB Output is correct
12 Correct 2194 ms 230936 KB Output is correct

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Runtime error 4336 ms 517740 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 111196 KB Output is correct
2 Correct 33 ms 111196 KB Output is correct
3 Correct 33 ms 111196 KB Output is correct
4 Correct 33 ms 111196 KB Output is correct
5 Correct 35 ms 111448 KB Output is correct
6 Correct 35 ms 111452 KB Output is correct
7 Correct 35 ms 111648 KB Output is correct
8 Correct 35 ms 111448 KB Output is correct
9 Correct 35 ms 111628 KB Output is correct
10 Correct 35 ms 111452 KB Output is correct
11 Correct 36 ms 111452 KB Output is correct
12 Correct 38 ms 111452 KB Output is correct
13 Correct 35 ms 111440 KB Output is correct
14 Correct 34 ms 111444 KB Output is correct
15 Correct 34 ms 111372 KB Output is correct
16 Correct 35 ms 111444 KB Output is correct
17 Correct 35 ms 111444 KB Output is correct
18 Correct 35 ms 111440 KB Output is correct
19 Correct 38 ms 111872 KB Output is correct
20 Correct 35 ms 111452 KB Output is correct
21 Correct 33 ms 111364 KB Output is correct
22 Correct 35 ms 111628 KB Output is correct
23 Correct 35 ms 111444 KB Output is correct
24 Correct 36 ms 111592 KB Output is correct
25 Correct 35 ms 111656 KB Output is correct
26 Correct 35 ms 111416 KB Output is correct
27 Correct 35 ms 111448 KB Output is correct
28 Correct 34 ms 111440 KB Output is correct
29 Correct 35 ms 111440 KB Output is correct
30 Correct 35 ms 111448 KB Output is correct
31 Correct 880 ms 141676 KB Output is correct
32 Correct 263 ms 118244 KB Output is correct
33 Correct 590 ms 131456 KB Output is correct
34 Correct 786 ms 141616 KB Output is correct
35 Correct 786 ms 138864 KB Output is correct
36 Correct 609 ms 132376 KB Output is correct
37 Correct 491 ms 132540 KB Output is correct
38 Correct 455 ms 127948 KB Output is correct
39 Correct 419 ms 129128 KB Output is correct
40 Correct 415 ms 127952 KB Output is correct
41 Correct 533 ms 137388 KB Output is correct
42 Correct 580 ms 137920 KB Output is correct
43 Correct 230 ms 118224 KB Output is correct
44 Correct 548 ms 137192 KB Output is correct
45 Correct 570 ms 134624 KB Output is correct
46 Correct 502 ms 128716 KB Output is correct
47 Correct 386 ms 134096 KB Output is correct
48 Correct 376 ms 132696 KB Output is correct
49 Correct 430 ms 134636 KB Output is correct
50 Correct 497 ms 137296 KB Output is correct
51 Correct 427 ms 133064 KB Output is correct
52 Correct 657 ms 158596 KB Output is correct
53 Correct 604 ms 157620 KB Output is correct
54 Correct 665 ms 151004 KB Output is correct
55 Correct 595 ms 144584 KB Output is correct
56 Correct 596 ms 145856 KB Output is correct
57 Correct 565 ms 138136 KB Output is correct
58 Correct 627 ms 144280 KB Output is correct
59 Correct 598 ms 146124 KB Output is correct
60 Correct 538 ms 138932 KB Output is correct
61 Correct 245 ms 126872 KB Output is correct
62 Correct 690 ms 150944 KB Output is correct
63 Correct 707 ms 150176 KB Output is correct
64 Correct 763 ms 148428 KB Output is correct
65 Correct 605 ms 141988 KB Output is correct
66 Correct 599 ms 139108 KB Output is correct
67 Correct 286 ms 124112 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 111196 KB Output is correct
2 Correct 33 ms 111196 KB Output is correct
3 Correct 33 ms 111196 KB Output is correct
4 Correct 33 ms 111196 KB Output is correct
5 Correct 35 ms 111448 KB Output is correct
6 Correct 35 ms 111452 KB Output is correct
7 Correct 35 ms 111648 KB Output is correct
8 Correct 35 ms 111448 KB Output is correct
9 Correct 35 ms 111628 KB Output is correct
10 Correct 35 ms 111452 KB Output is correct
11 Correct 36 ms 111452 KB Output is correct
12 Correct 38 ms 111452 KB Output is correct
13 Correct 35 ms 111440 KB Output is correct
14 Correct 34 ms 111444 KB Output is correct
15 Correct 34 ms 111372 KB Output is correct
16 Correct 35 ms 111444 KB Output is correct
17 Correct 35 ms 111444 KB Output is correct
18 Correct 35 ms 111440 KB Output is correct
19 Correct 38 ms 111872 KB Output is correct
20 Correct 35 ms 111452 KB Output is correct
21 Correct 33 ms 111364 KB Output is correct
22 Correct 35 ms 111628 KB Output is correct
23 Correct 35 ms 111444 KB Output is correct
24 Correct 36 ms 111592 KB Output is correct
25 Correct 35 ms 111656 KB Output is correct
26 Correct 35 ms 111416 KB Output is correct
27 Correct 35 ms 111448 KB Output is correct
28 Correct 34 ms 111440 KB Output is correct
29 Correct 35 ms 111440 KB Output is correct
30 Correct 35 ms 111448 KB Output is correct
31 Correct 880 ms 141676 KB Output is correct
32 Correct 263 ms 118244 KB Output is correct
33 Correct 590 ms 131456 KB Output is correct
34 Correct 786 ms 141616 KB Output is correct
35 Correct 786 ms 138864 KB Output is correct
36 Correct 609 ms 132376 KB Output is correct
37 Correct 491 ms 132540 KB Output is correct
38 Correct 455 ms 127948 KB Output is correct
39 Correct 419 ms 129128 KB Output is correct
40 Correct 415 ms 127952 KB Output is correct
41 Correct 533 ms 137388 KB Output is correct
42 Correct 580 ms 137920 KB Output is correct
43 Correct 230 ms 118224 KB Output is correct
44 Correct 548 ms 137192 KB Output is correct
45 Correct 570 ms 134624 KB Output is correct
46 Correct 502 ms 128716 KB Output is correct
47 Correct 386 ms 134096 KB Output is correct
48 Correct 376 ms 132696 KB Output is correct
49 Correct 430 ms 134636 KB Output is correct
50 Correct 497 ms 137296 KB Output is correct
51 Correct 427 ms 133064 KB Output is correct
52 Correct 4316 ms 297176 KB Output is correct
53 Correct 4415 ms 192232 KB Output is correct
54 Correct 3344 ms 340312 KB Output is correct
55 Correct 4086 ms 288712 KB Output is correct
56 Correct 3564 ms 164636 KB Output is correct
57 Correct 4046 ms 183184 KB Output is correct
58 Correct 2960 ms 313388 KB Output is correct
59 Correct 3402 ms 298776 KB Output is correct
60 Correct 3851 ms 282620 KB Output is correct
61 Correct 4143 ms 239220 KB Output is correct
62 Correct 1978 ms 199764 KB Output is correct
63 Correct 2194 ms 230936 KB Output is correct
64 Runtime error 4336 ms 517740 KB Execution killed with signal 6
65 Halted 0 ms 0 KB -