oj.uz

Submission #882494

# Submission time Handle Problem Language Result Execution time Memory
882494 2023-12-03T09:05:22 Z MilosMilutinovic Treatment Project (JOI20_treatment) C++14
100 / 100
 528 ms 91340 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = 4e5;

const int M = 4 * N;

set<pair<int, int>> all[2][N];

struct node {
  pair<int, int> mn;
  pair<int, int> mx;
} st[2][M];

node comb(node a, node b) {
  node res;
  res.mn = min(a.mn, b.mn);
  res.mx = max(a.mx, b.mx);
  return res;
}

void Build(int t, int x, int l, int r) {
  st[t][x].mn = {1.00001e9, -1};
  st[t][x].mx = {-1.00001e9, -1};
  if (l == r) {
    return;
  }
  int mid = l + r >> 1;
  Build(t, x * 2, l, mid);
  Build(t, x * 2 + 1, mid + 1, r);
}

void Modify(int t, int x, int l, int r, int p, pair<int, int> v) {
  if (l == r) {
    all[t][l].insert(v);
    st[t][x].mn = *all[t][l].begin();
    st[t][x].mx = *prev(all[t][l].end());
    return;
  }
  int mid = l + r >> 1;
  if (p <= mid) {
    Modify(t, x * 2, l, mid, p, v);
  } else {
    Modify(t, x * 2 + 1, mid + 1, r, p, v);
  }
  st[t][x] = comb(st[t][x * 2], st[t][x * 2 + 1]);
}

void Remove(int t, int x, int l, int r, int p, pair<int, int> v) {
  if (l == r) {
    all[t][l].erase(all[t][l].find(v));
    if (all[t][l].empty()) {
      st[t][x].mn = {1.00001e9, -1};
      st[t][x].mx = {-1.00001e9, -1};
    } else {
      st[t][x].mn = *all[t][l].begin();
      st[t][x].mx = *prev(all[t][l].end());
    }
    return;
  }
  int mid = l + r >> 1;
  if (p <= mid) {
    Remove(t, x * 2, l, mid, p, v);
  } else {
    Remove(t, x * 2 + 1, mid + 1, r, p, v);
  }
  st[t][x] = comb(st[t][x * 2], st[t][x * 2 + 1]);
}

node Query(int t, int x, int l, int r, int ql, int qr) {
  if (ql <= l && r <= qr) {
    return st[t][x];
  }
  int mid = l + r >> 1;
  if (qr <= mid) {
    return Query(t, x * 2, l, mid, ql, qr);
  } else if (ql > mid) {
    return Query(t, x * 2 + 1, mid + 1, r, ql, qr);
  } else {
    return comb(Query(t, x * 2, l, mid, ql, qr), Query(t, x * 2 + 1, mid + 1, r, ql, qr));
  }
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m;
  cin >> n >> m;
  vector<int> t(m), l(m), r(m), c(m);
  for (int i = 0; i < m; i++) {
    cin >> t[i] >> l[i] >> r[i] >> c[i];
    --l[i];
  }
  vector<int> xs;
  for (int i = 0; i < m; i++) {
    xs.push_back(l[i] - t[i]);
    xs.push_back(l[i] + t[i]);
    xs.push_back(r[i] - t[i]);
    xs.push_back(r[i] + t[i]);
  }
  sort(xs.begin(), xs.end());
  xs.erase(unique(xs.begin(), xs.end()), xs.end());
  auto GetVal = [&](int x) {
    return (int) (lower_bound(xs.begin(), xs.end(), x) - xs.begin());
  };
  int k = (int) xs.size();
  Build(0, 1, 0, k - 1);
  Build(1, 1, 0, k - 1);
  for (int i = 0; i < m; i++) {
    Modify(0, 1, 0, k - 1, GetVal(l[i] - t[i]), {t[i], i});
    Modify(1, 1, 0, k - 1, GetVal(l[i] + t[i]), {t[i], i});
  }
  const long long inf = (long long) 1e18;
  vector<long long> dist(m, inf);
  set<pair<long long, int>> st;
  for (int i = 0; i < m; i++) {
    if (l[i] == 0) {
      dist[i] = c[i];
      st.emplace(dist[i], i);
      Remove(0, 1, 0, k - 1, GetVal(l[i] - t[i]), {t[i], i});
      Remove(1, 1, 0, k - 1, GetVal(l[i] + t[i]), {t[i], i});
    }
  }
  while (!st.empty()) {
    auto it = st.begin();
    int i = it->second;
    st.erase(it);
    while (true) {
      {
        node nd = Query(0, 1, 0, k - 1, 0, GetVal(r[i] - t[i]));
        if (nd.mn.first <= t[i]) {
          int j = nd.mn.second;
          dist[j] = dist[i] + c[j];
          Remove(0, 1, 0, k - 1, GetVal(l[j] - t[j]), {t[j], j});
          Remove(1, 1, 0, k - 1, GetVal(l[j] + t[j]), {t[j], j});
          st.emplace(dist[j], j);
          continue;
        }
      }
      {
        node nd = Query(1, 1, 0, k - 1, 0, GetVal(r[i] + t[i]));
        if (nd.mx.first >= t[i]) {
          int j = nd.mx.second;
          dist[j] = dist[i] + c[j];
          Remove(0, 1, 0, k - 1, GetVal(l[j] - t[j]), {t[j], j});
          Remove(1, 1, 0, k - 1, GetVal(l[j] + t[j]), {t[j], j});
          st.emplace(dist[j], j);
          continue;
        }
      }
      break;
    }
  }
  long long res = inf;
  for (int i = 0; i < m; i++) {
    if (r[i] == n) {
      res = min(res, dist[i]);
    }
  }
  cout << (res == inf ? -1 : res) << '\n';
  return 0;
}

Compilation message

treatment.cpp: In function 'void Build(int, int, int, int)':
treatment.cpp:29:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |   int mid = l + r >> 1;
      |             ~~^~~
treatment.cpp: In function 'void Modify(int, int, int, int, int, std::pair<int, int>)':
treatment.cpp:41:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   41 |   int mid = l + r >> 1;
      |             ~~^~~
treatment.cpp: In function 'void Remove(int, int, int, int, int, std::pair<int, int>)':
treatment.cpp:62:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   62 |   int mid = l + r >> 1;
      |             ~~^~~
treatment.cpp: In function 'node Query(int, int, int, int, int, int)':
treatment.cpp:75:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   75 |   int mid = l + r >> 1;
      |             ~~^~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 338 ms 72324 KB Output is correct
2 Correct 282 ms 73844 KB Output is correct
3 Correct 293 ms 60584 KB Output is correct
4 Correct 256 ms 60696 KB Output is correct
5 Correct 193 ms 57288 KB Output is correct
6 Correct 167 ms 57292 KB Output is correct
7 Correct 176 ms 59336 KB Output is correct
8 Correct 104 ms 57036 KB Output is correct
9 Correct 120 ms 57288 KB Output is correct
10 Correct 105 ms 61352 KB Output is correct
11 Correct 457 ms 90188 KB Output is correct
12 Correct 454 ms 90320 KB Output is correct
13 Correct 453 ms 90056 KB Output is correct
14 Correct 460 ms 90156 KB Output is correct
15 Correct 399 ms 90132 KB Output is correct
16 Correct 392 ms 90180 KB Output is correct
17 Correct 393 ms 89372 KB Output is correct
18 Correct 429 ms 89404 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 40536 KB Output is correct
2 Correct 8 ms 40540 KB Output is correct
3 Correct 8 ms 40540 KB Output is correct
4 Correct 9 ms 40540 KB Output is correct
5 Correct 8 ms 40540 KB Output is correct
6 Correct 8 ms 40524 KB Output is correct
7 Correct 8 ms 40540 KB Output is correct
8 Correct 8 ms 40540 KB Output is correct
9 Correct 8 ms 40540 KB Output is correct
10 Correct 8 ms 40644 KB Output is correct
11 Correct 8 ms 40612 KB Output is correct
12 Correct 8 ms 40536 KB Output is correct
13 Correct 8 ms 40540 KB Output is correct
14 Correct 8 ms 40544 KB Output is correct
15 Correct 8 ms 40636 KB Output is correct
16 Correct 8 ms 40544 KB Output is correct
17 Correct 9 ms 40540 KB Output is correct
18 Correct 8 ms 40700 KB Output is correct
19 Correct 10 ms 40540 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 40536 KB Output is correct
2 Correct 8 ms 40540 KB Output is correct
3 Correct 8 ms 40540 KB Output is correct
4 Correct 9 ms 40540 KB Output is correct
5 Correct 8 ms 40540 KB Output is correct
6 Correct 8 ms 40524 KB Output is correct
7 Correct 8 ms 40540 KB Output is correct
8 Correct 8 ms 40540 KB Output is correct
9 Correct 8 ms 40540 KB Output is correct
10 Correct 8 ms 40644 KB Output is correct
11 Correct 8 ms 40612 KB Output is correct
12 Correct 8 ms 40536 KB Output is correct
13 Correct 8 ms 40540 KB Output is correct
14 Correct 8 ms 40544 KB Output is correct
15 Correct 8 ms 40636 KB Output is correct
16 Correct 8 ms 40544 KB Output is correct
17 Correct 9 ms 40540 KB Output is correct
18 Correct 8 ms 40700 KB Output is correct
19 Correct 10 ms 40540 KB Output is correct
20 Correct 19 ms 43768 KB Output is correct
21 Correct 20 ms 43712 KB Output is correct
22 Correct 20 ms 43612 KB Output is correct
23 Correct 19 ms 43612 KB Output is correct
24 Correct 22 ms 43868 KB Output is correct
25 Correct 22 ms 43780 KB Output is correct
26 Correct 24 ms 43756 KB Output is correct
27 Correct 18 ms 43612 KB Output is correct
28 Correct 22 ms 43840 KB Output is correct
29 Correct 22 ms 43868 KB Output is correct
30 Correct 15 ms 43608 KB Output is correct
31 Correct 13 ms 43612 KB Output is correct
32 Correct 22 ms 43868 KB Output is correct
33 Correct 22 ms 43616 KB Output is correct
34 Correct 21 ms 43616 KB Output is correct
35 Correct 22 ms 43612 KB Output is correct
36 Correct 24 ms 43748 KB Output is correct
37 Correct 24 ms 43876 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 338 ms 72324 KB Output is correct
2 Correct 282 ms 73844 KB Output is correct
3 Correct 293 ms 60584 KB Output is correct
4 Correct 256 ms 60696 KB Output is correct
5 Correct 193 ms 57288 KB Output is correct
6 Correct 167 ms 57292 KB Output is correct
7 Correct 176 ms 59336 KB Output is correct
8 Correct 104 ms 57036 KB Output is correct
9 Correct 120 ms 57288 KB Output is correct
10 Correct 105 ms 61352 KB Output is correct
11 Correct 457 ms 90188 KB Output is correct
12 Correct 454 ms 90320 KB Output is correct
13 Correct 453 ms 90056 KB Output is correct
14 Correct 460 ms 90156 KB Output is correct
15 Correct 399 ms 90132 KB Output is correct
16 Correct 392 ms 90180 KB Output is correct
17 Correct 393 ms 89372 KB Output is correct
18 Correct 429 ms 89404 KB Output is correct
19 Correct 8 ms 40536 KB Output is correct
20 Correct 8 ms 40540 KB Output is correct
21 Correct 8 ms 40540 KB Output is correct
22 Correct 9 ms 40540 KB Output is correct
23 Correct 8 ms 40540 KB Output is correct
24 Correct 8 ms 40524 KB Output is correct
25 Correct 8 ms 40540 KB Output is correct
26 Correct 8 ms 40540 KB Output is correct
27 Correct 8 ms 40540 KB Output is correct
28 Correct 8 ms 40644 KB Output is correct
29 Correct 8 ms 40612 KB Output is correct
30 Correct 8 ms 40536 KB Output is correct
31 Correct 8 ms 40540 KB Output is correct
32 Correct 8 ms 40544 KB Output is correct
33 Correct 8 ms 40636 KB Output is correct
34 Correct 8 ms 40544 KB Output is correct
35 Correct 9 ms 40540 KB Output is correct
36 Correct 8 ms 40700 KB Output is correct
37 Correct 10 ms 40540 KB Output is correct
38 Correct 19 ms 43768 KB Output is correct
39 Correct 20 ms 43712 KB Output is correct
40 Correct 20 ms 43612 KB Output is correct
41 Correct 19 ms 43612 KB Output is correct
42 Correct 22 ms 43868 KB Output is correct
43 Correct 22 ms 43780 KB Output is correct
44 Correct 24 ms 43756 KB Output is correct
45 Correct 18 ms 43612 KB Output is correct
46 Correct 22 ms 43840 KB Output is correct
47 Correct 22 ms 43868 KB Output is correct
48 Correct 15 ms 43608 KB Output is correct
49 Correct 13 ms 43612 KB Output is correct
50 Correct 22 ms 43868 KB Output is correct
51 Correct 22 ms 43616 KB Output is correct
52 Correct 21 ms 43616 KB Output is correct
53 Correct 22 ms 43612 KB Output is correct
54 Correct 24 ms 43748 KB Output is correct
55 Correct 24 ms 43876 KB Output is correct
56 Correct 336 ms 73284 KB Output is correct
57 Correct 333 ms 73656 KB Output is correct
58 Correct 285 ms 72892 KB Output is correct
59 Correct 288 ms 73156 KB Output is correct
60 Correct 353 ms 90428 KB Output is correct
61 Correct 283 ms 72908 KB Output is correct
62 Correct 333 ms 73640 KB Output is correct
63 Correct 306 ms 90180 KB Output is correct
64 Correct 326 ms 90484 KB Output is correct
65 Correct 318 ms 74004 KB Output is correct
66 Correct 312 ms 90312 KB Output is correct
67 Correct 436 ms 90824 KB Output is correct
68 Correct 422 ms 90776 KB Output is correct
69 Correct 340 ms 90812 KB Output is correct
70 Correct 450 ms 91032 KB Output is correct
71 Correct 392 ms 90724 KB Output is correct
72 Correct 311 ms 90892 KB Output is correct
73 Correct 456 ms 91072 KB Output is correct
74 Correct 187 ms 90904 KB Output is correct
75 Correct 151 ms 90748 KB Output is correct
76 Correct 528 ms 90668 KB Output is correct
77 Correct 503 ms 91032 KB Output is correct
78 Correct 457 ms 90628 KB Output is correct
79 Correct 476 ms 90916 KB Output is correct
80 Correct 397 ms 90512 KB Output is correct
81 Correct 245 ms 90888 KB Output is correct
82 Correct 410 ms 89756 KB Output is correct
83 Correct 445 ms 90056 KB Output is correct
84 Correct 497 ms 90224 KB Output is correct
85 Correct 362 ms 90892 KB Output is correct
86 Correct 361 ms 90776 KB Output is correct
87 Correct 374 ms 91128 KB Output is correct
88 Correct 359 ms 90828 KB Output is correct
89 Correct 354 ms 90752 KB Output is correct
90 Correct 490 ms 91044 KB Output is correct
91 Correct 450 ms 90940 KB Output is correct
92 Correct 364 ms 90940 KB Output is correct
93 Correct 457 ms 90984 KB Output is correct
94 Correct 377 ms 91340 KB Output is correct
95 Correct 437 ms 90928 KB Output is correct
96 Correct 505 ms 91056 KB Output is correct
97 Correct 483 ms 91084 KB Output is correct
98 Correct 486 ms 91080 KB Output is correct
99 Correct 507 ms 90920 KB Output is correct
100 Correct 393 ms 90824 KB Output is correct
101 Correct 499 ms 90824 KB Output is correct
102 Correct 508 ms 91080 KB Output is correct
103 Correct 353 ms 91336 KB Output is correct