oj.uz

Submission #955638

# Submission time Handle Problem Language Result Execution time Memory
955638 2024-03-31T07:59:10 Z abczz Event Hopping 2 (JOI21_event2) C++14
100 / 100
 174 ms 52760 KB 
#include <iostream>
#include <array>
#include <algorithm>
#include <queue>
#include <map>
#define ll long long

using namespace std;

vector <ll> adj[200001], V;
ll n, k, x, y, s, z, X[200001], bl[200001][18], D[200001], mxdepth[200001];
map <ll, array<ll, 3>> mp;
priority_queue <array<ll, 3>, vector<array<ll, 3>>, greater<array<ll, 3>> > pq;
priority_queue <array<ll, 3>> pq2;
array <ll, 3> R[200001], L[200001];

void dfs(ll u) {
  s = max(s, mxdepth[u]);
  for (auto v : adj[u]) {
    mxdepth[v] = mxdepth[u] + 1;
    dfs(v);
  }
}
ll binlift(ll u, ll r) {
  ll du = D[u];
  for (int i=17; i>=0; --i) {
    if (r <= R[bl[u][i]][0] && bl[u][i] != n) {
      u = bl[u][i];
    }
  }
  return du-D[u];
}

int main() {
  cin >> n >> k;
  for (int i=0; i<n; ++i) {
    cin >> R[i][0] >> R[i][1];
    R[i][2] = i;
  }
  sort(R, R+n);
  for (int i=0; i<n; ++i) {
    X[R[i][2]] = i;
    L[i] = R[i];
    L[i][2] = i;
  }
  sort(L, L+n, [](auto a, auto b) {
    return a[1] > b[1];
  });
  x = -1e18, y = n;
  for (int i=0; i<n; ++i) {
    while (!pq.empty()) {
      auto [r, l, id] = pq.top();
      if (r <= R[i][0]) {
        pq.pop();
        if (l > x) {
          x = l;
          y = id;
        }
      }
      else break;
    }
    //cout << y << " " << i << " " << R[i][0] << " " << R[i][1] << '\n';
    bl[i][0] = y;
    D[i] = D[y]+1;
    pq.push({R[i][1], R[i][0], i});
  }
  bl[n][0] = n;
  for (int j=1; j<18; ++j) {
    for (int i=0; i<=n; ++i) {
      bl[i][j] = bl[bl[i][j-1]][j-1];
    }
  }
  while (!pq.empty()) {
    auto [r, l, id] = pq.top();
    pq.pop();
    adj[n].push_back(id);
  }
  x = 1e18, y = n;
  for (int i=0; i<n; ++i) {
    while (!pq2.empty()) {
      auto [l, r, id] = pq2.top();
      if (L[i][1] <= l) {
        pq2.pop();
        if (x > r) {
          x = r;
          y = id;
        }
      }
      else break;
    }
    adj[y].push_back(L[i][2]);
    pq2.push({L[i][0], L[i][1], L[i][2]});
  }
  dfs(n);
  if (s < k) {
    cout << "-1\n";
    return 0;
  }
  mp[0] = {0, s, n};
  for (int j=0; j<n; ++j) {
    int i = X[j];
    auto it = mp.lower_bound(R[i][1]);
    if (it != mp.end()) z = binlift(it->second[2], R[i][1]);
    else z = mxdepth[i]-1;
    it = prev(it);
    if (it->second[0] > R[i][0]) continue;
    x = it->second[1];
    y = binlift(i, it->second[0]);
    if (s-x+y+z+1 >= k) {
      s = s-x+y+z+1;
      mp[it->first] = {it->second[0], y, it->second[2]};
      mp[R[i][0]] = {R[i][1], z, i};
      V.push_back(j);
    }
  }
  for (int i=0; i<k; ++i) {
    cout << V[i]+1 << '\n';
  }
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:52:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   52 |       auto [r, l, id] = pq.top();
      |            ^
event2.cpp:74:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   74 |     auto [r, l, id] = pq.top();
      |          ^
event2.cpp:81:12: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   81 |       auto [l, r, id] = pq2.top();
      |            ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14172 KB Output is correct
2 Correct 3 ms 14172 KB Output is correct
3 Correct 4 ms 14172 KB Output is correct
4 Correct 134 ms 49948 KB Output is correct
5 Correct 116 ms 51396 KB Output is correct
6 Correct 118 ms 51396 KB Output is correct
7 Correct 119 ms 51240 KB Output is correct
8 Correct 122 ms 51468 KB Output is correct
9 Correct 116 ms 51448 KB Output is correct
10 Correct 122 ms 51452 KB Output is correct
11 Correct 121 ms 51340 KB Output is correct
12 Correct 112 ms 45548 KB Output is correct
13 Correct 106 ms 45516 KB Output is correct
14 Correct 104 ms 45516 KB Output is correct
15 Correct 109 ms 45588 KB Output is correct
16 Correct 92 ms 39004 KB Output is correct
17 Correct 98 ms 38952 KB Output is correct
18 Correct 108 ms 38996 KB Output is correct
19 Correct 91 ms 37152 KB Output is correct
20 Correct 89 ms 37208 KB Output is correct
21 Correct 91 ms 37024 KB Output is correct
22 Correct 94 ms 37200 KB Output is correct
23 Correct 98 ms 36896 KB Output is correct
24 Correct 103 ms 37004 KB Output is correct
25 Correct 104 ms 37220 KB Output is correct
26 Correct 98 ms 37300 KB Output is correct
27 Correct 99 ms 37300 KB Output is correct
28 Correct 83 ms 42908 KB Output is correct
29 Correct 101 ms 40480 KB Output is correct
30 Correct 83 ms 37924 KB Output is correct
31 Correct 89 ms 36900 KB Output is correct
32 Correct 102 ms 36764 KB Output is correct
33 Correct 98 ms 37296 KB Output is correct
34 Correct 104 ms 45588 KB Output is correct
35 Correct 105 ms 45532 KB Output is correct
36 Correct 101 ms 45256 KB Output is correct
37 Correct 98 ms 44232 KB Output is correct
38 Correct 99 ms 44048 KB Output is correct
39 Correct 99 ms 44232 KB Output is correct
40 Correct 99 ms 44056 KB Output is correct
41 Correct 99 ms 44080 KB Output is correct
42 Correct 86 ms 39488 KB Output is correct
43 Correct 105 ms 44056 KB Output is correct
44 Correct 113 ms 43872 KB Output is correct
45 Correct 102 ms 43660 KB Output is correct
46 Correct 113 ms 43464 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14168 KB Output is correct
2 Correct 4 ms 14172 KB Output is correct
3 Correct 3 ms 14172 KB Output is correct
4 Correct 3 ms 14172 KB Output is correct
5 Correct 3 ms 14420 KB Output is correct
6 Correct 3 ms 14424 KB Output is correct
7 Correct 3 ms 14172 KB Output is correct
8 Correct 3 ms 14172 KB Output is correct
9 Correct 3 ms 14428 KB Output is correct
10 Correct 3 ms 14168 KB Output is correct
11 Correct 3 ms 14172 KB Output is correct
12 Correct 3 ms 14172 KB Output is correct
13 Correct 3 ms 14172 KB Output is correct
14 Correct 3 ms 14396 KB Output is correct
15 Correct 3 ms 14172 KB Output is correct
16 Correct 3 ms 14172 KB Output is correct
17 Correct 3 ms 14172 KB Output is correct
18 Correct 3 ms 14424 KB Output is correct
19 Correct 3 ms 14172 KB Output is correct
20 Correct 3 ms 14172 KB Output is correct
21 Correct 3 ms 14172 KB Output is correct
22 Correct 3 ms 14172 KB Output is correct
23 Correct 4 ms 14172 KB Output is correct
24 Correct 3 ms 14172 KB Output is correct
25 Correct 3 ms 14388 KB Output is correct
26 Correct 3 ms 14168 KB Output is correct
27 Correct 3 ms 14172 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14168 KB Output is correct
2 Correct 4 ms 14172 KB Output is correct
3 Correct 3 ms 14172 KB Output is correct
4 Correct 3 ms 14172 KB Output is correct
5 Correct 3 ms 14420 KB Output is correct
6 Correct 3 ms 14424 KB Output is correct
7 Correct 3 ms 14172 KB Output is correct
8 Correct 3 ms 14172 KB Output is correct
9 Correct 3 ms 14428 KB Output is correct
10 Correct 3 ms 14168 KB Output is correct
11 Correct 3 ms 14172 KB Output is correct
12 Correct 3 ms 14172 KB Output is correct
13 Correct 3 ms 14172 KB Output is correct
14 Correct 3 ms 14396 KB Output is correct
15 Correct 3 ms 14172 KB Output is correct
16 Correct 3 ms 14172 KB Output is correct
17 Correct 3 ms 14172 KB Output is correct
18 Correct 3 ms 14424 KB Output is correct
19 Correct 3 ms 14172 KB Output is correct
20 Correct 3 ms 14172 KB Output is correct
21 Correct 3 ms 14172 KB Output is correct
22 Correct 3 ms 14172 KB Output is correct
23 Correct 4 ms 14172 KB Output is correct
24 Correct 3 ms 14172 KB Output is correct
25 Correct 3 ms 14388 KB Output is correct
26 Correct 3 ms 14168 KB Output is correct
27 Correct 3 ms 14172 KB Output is correct
28 Correct 6 ms 14684 KB Output is correct
29 Correct 6 ms 14712 KB Output is correct
30 Correct 6 ms 14684 KB Output is correct
31 Correct 6 ms 14684 KB Output is correct
32 Correct 6 ms 14896 KB Output is correct
33 Correct 6 ms 14680 KB Output is correct
34 Correct 6 ms 14680 KB Output is correct
35 Correct 7 ms 14936 KB Output is correct
36 Correct 6 ms 14936 KB Output is correct
37 Correct 6 ms 14940 KB Output is correct
38 Correct 5 ms 14664 KB Output is correct
39 Correct 7 ms 14940 KB Output is correct
40 Correct 6 ms 14936 KB Output is correct
41 Correct 6 ms 14940 KB Output is correct
42 Correct 5 ms 14712 KB Output is correct
43 Correct 6 ms 14664 KB Output is correct
44 Correct 6 ms 14684 KB Output is correct
45 Correct 6 ms 14684 KB Output is correct
46 Correct 5 ms 14428 KB Output is correct
47 Correct 6 ms 14452 KB Output is correct
48 Correct 6 ms 14424 KB Output is correct
49 Correct 6 ms 14428 KB Output is correct
50 Correct 5 ms 14424 KB Output is correct
51 Correct 6 ms 14428 KB Output is correct
52 Correct 6 ms 14424 KB Output is correct
53 Correct 6 ms 14460 KB Output is correct
54 Correct 5 ms 14424 KB Output is correct
55 Correct 6 ms 14940 KB Output is correct
56 Correct 6 ms 14940 KB Output is correct
57 Correct 6 ms 14940 KB Output is correct
58 Correct 8 ms 14936 KB Output is correct
59 Correct 6 ms 14940 KB Output is correct
60 Correct 6 ms 14940 KB Output is correct
61 Correct 5 ms 14920 KB Output is correct
62 Correct 6 ms 14936 KB Output is correct
63 Correct 6 ms 14940 KB Output is correct
64 Correct 5 ms 14684 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14172 KB Output is correct
2 Correct 3 ms 14172 KB Output is correct
3 Correct 4 ms 14172 KB Output is correct
4 Correct 134 ms 49948 KB Output is correct
5 Correct 116 ms 51396 KB Output is correct
6 Correct 118 ms 51396 KB Output is correct
7 Correct 119 ms 51240 KB Output is correct
8 Correct 122 ms 51468 KB Output is correct
9 Correct 116 ms 51448 KB Output is correct
10 Correct 122 ms 51452 KB Output is correct
11 Correct 121 ms 51340 KB Output is correct
12 Correct 112 ms 45548 KB Output is correct
13 Correct 106 ms 45516 KB Output is correct
14 Correct 104 ms 45516 KB Output is correct
15 Correct 109 ms 45588 KB Output is correct
16 Correct 92 ms 39004 KB Output is correct
17 Correct 98 ms 38952 KB Output is correct
18 Correct 108 ms 38996 KB Output is correct
19 Correct 91 ms 37152 KB Output is correct
20 Correct 89 ms 37208 KB Output is correct
21 Correct 91 ms 37024 KB Output is correct
22 Correct 94 ms 37200 KB Output is correct
23 Correct 98 ms 36896 KB Output is correct
24 Correct 103 ms 37004 KB Output is correct
25 Correct 104 ms 37220 KB Output is correct
26 Correct 98 ms 37300 KB Output is correct
27 Correct 99 ms 37300 KB Output is correct
28 Correct 83 ms 42908 KB Output is correct
29 Correct 101 ms 40480 KB Output is correct
30 Correct 83 ms 37924 KB Output is correct
31 Correct 89 ms 36900 KB Output is correct
32 Correct 102 ms 36764 KB Output is correct
33 Correct 98 ms 37296 KB Output is correct
34 Correct 104 ms 45588 KB Output is correct
35 Correct 105 ms 45532 KB Output is correct
36 Correct 101 ms 45256 KB Output is correct
37 Correct 98 ms 44232 KB Output is correct
38 Correct 99 ms 44048 KB Output is correct
39 Correct 99 ms 44232 KB Output is correct
40 Correct 99 ms 44056 KB Output is correct
41 Correct 99 ms 44080 KB Output is correct
42 Correct 86 ms 39488 KB Output is correct
43 Correct 105 ms 44056 KB Output is correct
44 Correct 113 ms 43872 KB Output is correct
45 Correct 102 ms 43660 KB Output is correct
46 Correct 113 ms 43464 KB Output is correct
47 Correct 3 ms 14168 KB Output is correct
48 Correct 4 ms 14172 KB Output is correct
49 Correct 3 ms 14172 KB Output is correct
50 Correct 3 ms 14172 KB Output is correct
51 Correct 3 ms 14420 KB Output is correct
52 Correct 3 ms 14424 KB Output is correct
53 Correct 3 ms 14172 KB Output is correct
54 Correct 3 ms 14172 KB Output is correct
55 Correct 3 ms 14428 KB Output is correct
56 Correct 3 ms 14168 KB Output is correct
57 Correct 3 ms 14172 KB Output is correct
58 Correct 3 ms 14172 KB Output is correct
59 Correct 3 ms 14172 KB Output is correct
60 Correct 3 ms 14396 KB Output is correct
61 Correct 3 ms 14172 KB Output is correct
62 Correct 3 ms 14172 KB Output is correct
63 Correct 3 ms 14172 KB Output is correct
64 Correct 3 ms 14424 KB Output is correct
65 Correct 3 ms 14172 KB Output is correct
66 Correct 3 ms 14172 KB Output is correct
67 Correct 3 ms 14172 KB Output is correct
68 Correct 3 ms 14172 KB Output is correct
69 Correct 4 ms 14172 KB Output is correct
70 Correct 3 ms 14172 KB Output is correct
71 Correct 3 ms 14388 KB Output is correct
72 Correct 3 ms 14168 KB Output is correct
73 Correct 3 ms 14172 KB Output is correct
74 Correct 6 ms 14684 KB Output is correct
75 Correct 6 ms 14712 KB Output is correct
76 Correct 6 ms 14684 KB Output is correct
77 Correct 6 ms 14684 KB Output is correct
78 Correct 6 ms 14896 KB Output is correct
79 Correct 6 ms 14680 KB Output is correct
80 Correct 6 ms 14680 KB Output is correct
81 Correct 7 ms 14936 KB Output is correct
82 Correct 6 ms 14936 KB Output is correct
83 Correct 6 ms 14940 KB Output is correct
84 Correct 5 ms 14664 KB Output is correct
85 Correct 7 ms 14940 KB Output is correct
86 Correct 6 ms 14936 KB Output is correct
87 Correct 6 ms 14940 KB Output is correct
88 Correct 5 ms 14712 KB Output is correct
89 Correct 6 ms 14664 KB Output is correct
90 Correct 6 ms 14684 KB Output is correct
91 Correct 6 ms 14684 KB Output is correct
92 Correct 5 ms 14428 KB Output is correct
93 Correct 6 ms 14452 KB Output is correct
94 Correct 6 ms 14424 KB Output is correct
95 Correct 6 ms 14428 KB Output is correct
96 Correct 5 ms 14424 KB Output is correct
97 Correct 6 ms 14428 KB Output is correct
98 Correct 6 ms 14424 KB Output is correct
99 Correct 6 ms 14460 KB Output is correct
100 Correct 5 ms 14424 KB Output is correct
101 Correct 6 ms 14940 KB Output is correct
102 Correct 6 ms 14940 KB Output is correct
103 Correct 6 ms 14940 KB Output is correct
104 Correct 8 ms 14936 KB Output is correct
105 Correct 6 ms 14940 KB Output is correct
106 Correct 6 ms 14940 KB Output is correct
107 Correct 5 ms 14920 KB Output is correct
108 Correct 6 ms 14936 KB Output is correct
109 Correct 6 ms 14940 KB Output is correct
110 Correct 5 ms 14684 KB Output is correct
111 Correct 151 ms 39876 KB Output is correct
112 Correct 126 ms 39576 KB Output is correct
113 Correct 129 ms 39624 KB Output is correct
114 Correct 130 ms 39616 KB Output is correct
115 Correct 137 ms 39616 KB Output is correct
116 Correct 119 ms 39620 KB Output is correct
117 Correct 122 ms 39752 KB Output is correct
118 Correct 174 ms 51576 KB Output is correct
119 Correct 173 ms 51320 KB Output is correct
120 Correct 167 ms 45512 KB Output is correct
121 Correct 87 ms 40480 KB Output is correct
122 Correct 150 ms 45772 KB Output is correct
123 Correct 155 ms 45516 KB Output is correct
124 Correct 151 ms 45772 KB Output is correct
125 Correct 87 ms 40376 KB Output is correct
126 Correct 143 ms 39064 KB Output is correct
127 Correct 120 ms 38996 KB Output is correct
128 Correct 129 ms 38728 KB Output is correct
129 Correct 89 ms 37812 KB Output is correct
130 Correct 111 ms 37156 KB Output is correct
131 Correct 109 ms 37140 KB Output is correct
132 Correct 115 ms 37268 KB Output is correct
133 Correct 97 ms 36964 KB Output is correct
134 Correct 114 ms 36888 KB Output is correct
135 Correct 111 ms 36948 KB Output is correct
136 Correct 114 ms 36884 KB Output is correct
137 Correct 99 ms 36760 KB Output is correct
138 Correct 113 ms 37148 KB Output is correct
139 Correct 117 ms 37276 KB Output is correct
140 Correct 114 ms 37272 KB Output is correct
141 Correct 110 ms 37196 KB Output is correct
142 Correct 125 ms 52676 KB Output is correct
143 Correct 121 ms 52760 KB Output is correct
144 Correct 121 ms 52580 KB Output is correct
145 Correct 115 ms 52372 KB Output is correct
146 Correct 124 ms 52364 KB Output is correct
147 Correct 117 ms 52420 KB Output is correct
148 Correct 115 ms 52492 KB Output is correct
149 Correct 119 ms 52372 KB Output is correct
150 Correct 117 ms 52620 KB Output is correct
151 Correct 112 ms 52264 KB Output is correct
152 Correct 78 ms 43344 KB Output is correct
153 Correct 121 ms 52680 KB Output is correct
154 Correct 130 ms 52616 KB Output is correct
155 Correct 120 ms 52760 KB Output is correct
156 Correct 115 ms 52420 KB Output is correct
157 Correct 116 ms 52508 KB Output is correct
158 Correct 117 ms 52628 KB Output is correct
159 Correct 115 ms 52500 KB Output is correct
160 Correct 79 ms 43428 KB Output is correct
161 Correct 140 ms 44240 KB Output is correct
162 Correct 136 ms 44056 KB Output is correct
163 Correct 138 ms 44228 KB Output is correct
164 Correct 137 ms 43976 KB Output is correct
165 Correct 147 ms 44188 KB Output is correct
166 Correct 88 ms 39508 KB Output is correct
167 Correct 110 ms 43976 KB Output is correct
168 Correct 113 ms 43724 KB Output is correct
169 Correct 113 ms 43664 KB Output is correct
170 Correct 105 ms 43420 KB Output is correct
171 Correct 85 ms 43408 KB Output is correct
172 Correct 105 ms 44236 KB Output is correct
173 Correct 147 ms 45728 KB Output is correct
174 Correct 145 ms 45832 KB Output is correct
175 Correct 147 ms 45516 KB Output is correct
176 Correct 156 ms 45200 KB Output is correct