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Submission #422801

# Submission time Handle Problem Language Result Execution time Memory
422801 2021-06-10T12:37:05 Z SSRS Sky Walking (IOI19_walk) C++14
57 / 100
 4000 ms 494212 KB 
#include <bits/stdc++.h>
using namespace std;
const long long INF = 1000000000000000000;
struct segment_tree{
  int N;
  vector<long long> ST;
  segment_tree(int N2){
    N = 1;
    while (N < N2){
      N *= 2;
    }
    ST = vector<long long>(N * 2 - 1, INF);
  }
  void update(int i, long long x){
    i += N - 1;
    ST[i] = x;
    while (i > 0){
      i = (i - 1) / 2;
      ST[i] = min(ST[i * 2 + 1], ST[i * 2 + 2]);
    }
  }
  long long range_min(int L, int R, int i, int l, int r){
    if (r <= L || R <= l){
      return INF;
    } else if (L <= l && r <= R){
      return ST[i];
    } else {
      int m = (l + r) / 2;
      return min(range_min(L, R, i * 2 + 1, l, m), range_min(L, R, i * 2 + 2, m, r));
    }
  }
  long long range_min(int L, int R){
    return range_min(L, R, 0, 0, N);
  }
};
long long min_distance(vector<int> x, vector<int> h, vector<int> l, vector<int> r, vector<int> y, int s, int g){
  int n = x.size();
  int m = y.size();
  if (s != 0 || g != n - 1){
    vector<tuple<int, int, int>> T;
    for (int i = 0; i < n; i++){
      T.push_back(make_tuple(h[i], 1, i));
    }
    for (int i = 0; i < m; i++){
      T.push_back(make_tuple(y[i], 0, i));
    }
    sort(T.begin(), T.end(), greater<tuple<int, int, int>>());
    vector<vector<int>> id(m);
    set<int> st;
    for (int i = 0; i < n + m; i++){
      int t = get<1>(T[i]);
      int p = get<2>(T[i]);
      if (t == 0){
        auto itr = st.lower_bound(l[p]);
        while (true){
          id[p].push_back(*itr);
          if (*itr == r[p]){
            break;
          }
          itr++;
        }
      }
      if (t == 1){
        st.insert(p);
      }
    }
    vector<vector<int>> h2(n);
    for (int i = 0; i < n; i++){
      h2[i].push_back(0);
    }
    for (int i = 0; i < m; i++){
      for (int j : id[i]){
        h2[j].push_back(y[i]);
      }
    }
    for (int i = 0; i < n; i++){
      sort(h2[i].begin(), h2[i].end());
      h2[i].erase(unique(h2[i].begin(), h2[i].end()), h2[i].end());
    }
    int V = 0;
    vector<vector<int>> id2(n);
    for (int i = 0; i < n; i++){
      int cnt = h2[i].size();
      id2[i] = vector<int>(cnt);
      for (int j = 0; j < cnt; j++){
        id2[i][j] = V;
        V++;
      }
    }
    vector<vector<pair<int, int>>> E(V);
    for (int i = 0; i < n; i++){
      int cnt = h2[i].size();
      for (int j = 0; j < cnt - 1; j++){
        int v = id2[i][j];
        int w = id2[i][j + 1];
        int d = h2[i][j + 1] - h2[i][j];
        E[v].push_back(make_pair(d, w));
        E[w].push_back(make_pair(d, v));
      }
    }
    for (int i = 0; i < m; i++){
      int cnt = id[i].size();
      vector<int> t(cnt);
      for (int j = 0; j < cnt; j++){
        int p = lower_bound(h2[id[i][j]].begin(), h2[id[i][j]].end(), y[i]) - h2[id[i][j]].begin();
        t[j] = id2[id[i][j]][p];
      }
      for (int j = 0; j < cnt - 1; j++){
        int v = t[j];
        int w = t[j + 1];
        int d = x[id[i][j + 1]] - x[id[i][j]];
        E[v].push_back(make_pair(d, w));
        E[w].push_back(make_pair(d, v));
      }
    }
    int s2 = id2[s][0];
    int g2 = id2[g][0];
    vector<long long> d(V, -1);
    priority_queue<pair<long long, int>, vector<pair<long long, int>>, greater<pair<long long, int>>> pq;
    pq.push(make_pair(0, s2));
    while (!pq.empty()){
      long long dd = pq.top().first;
      int v = pq.top().second;
      pq.pop();
      if (d[v] == -1){
        d[v] = dd;
        for (auto P : E[v]){
          int w = P.second;
          if (d[w] == -1){
            pq.push(make_pair(dd + P.first, w));
          }
        }
      }
    }
    return d[g2];
  } else {
    vector<pair<int, int>> P(m);
    for (int i = 0; i < m; i++){
      P[i] = make_pair(y[i], i);
    }
    sort(P.begin(), P.end());
    vector<int> pos(m);
    for (int i = 0; i < m; i++){
      pos[i] = lower_bound(P.begin(), P.end(), make_pair(y[i], i)) - P.begin();
    }
    vector<vector<int>> add(n), sub(n);
    for (int i = 0; i < m; i++){
      add[l[i]].push_back(i);
      sub[r[i]].push_back(i);
    }
    segment_tree ST1(m), ST2(m);
    for (int i : add[0]){
      ST1.update(pos[i], y[i] * 2);
      ST2.update(pos[i], 0);
    }
    for (int i = 1; i < n - 1; i++){
      for (int j : add[i]){
        long long mn1 = ST1.range_min(pos[j], m);
        long long mn2 = ST2.range_min(0, pos[j]);
        long long dp = min(mn1 - y[j], mn2 + y[j]);
        ST1.update(pos[j], dp + y[j]);
        ST2.update(pos[j], dp - y[j]);
      }
      for (int j : sub[i]){
        ST1.update(pos[j], INF);
        ST2.update(pos[j], INF);
      }
    }
    long long ans = ST1.range_min(0, m);
    ans += x[n - 1] - x[0];
    if (ans > INF / 2){
      return -1;
    } else {
      return ans;
    }
  }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 284 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1028 ms 82020 KB Output is correct
4 Correct 1117 ms 101544 KB Output is correct
5 Correct 673 ms 89400 KB Output is correct
6 Correct 625 ms 81372 KB Output is correct
7 Correct 670 ms 89400 KB Output is correct
8 Correct 1335 ms 102740 KB Output is correct
9 Correct 812 ms 86788 KB Output is correct
10 Correct 1521 ms 133092 KB Output is correct
11 Correct 570 ms 52252 KB Output is correct
12 Correct 255 ms 20408 KB Output is correct
13 Correct 234 ms 20408 KB Output is correct
14 Correct 373 ms 47924 KB Output is correct
15 Correct 390 ms 51252 KB Output is correct
16 Correct 373 ms 49256 KB Output is correct
17 Correct 346 ms 47932 KB Output is correct
18 Correct 95 ms 15160 KB Output is correct
19 Correct 9 ms 2576 KB Output is correct
20 Correct 96 ms 23588 KB Output is correct
21 Correct 200 ms 17264 KB Output is correct
22 Correct 206 ms 20400 KB Output is correct
23 Correct 169 ms 19152 KB Output is correct
24 Correct 217 ms 19392 KB Output is correct
25 Correct 194 ms 18216 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 5600 KB Output is correct
2 Correct 136 ms 9164 KB Output is correct
3 Correct 152 ms 10128 KB Output is correct
4 Correct 215 ms 18112 KB Output is correct
5 Correct 195 ms 16584 KB Output is correct
6 Correct 205 ms 17860 KB Output is correct
7 Correct 113 ms 13256 KB Output is correct
8 Correct 228 ms 20400 KB Output is correct
9 Correct 225 ms 19052 KB Output is correct
10 Correct 168 ms 17860 KB Output is correct
11 Correct 14 ms 3404 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 5600 KB Output is correct
2 Correct 136 ms 9164 KB Output is correct
3 Correct 152 ms 10128 KB Output is correct
4 Correct 215 ms 18112 KB Output is correct
5 Correct 195 ms 16584 KB Output is correct
6 Correct 205 ms 17860 KB Output is correct
7 Correct 113 ms 13256 KB Output is correct
8 Correct 228 ms 20400 KB Output is correct
9 Correct 225 ms 19052 KB Output is correct
10 Correct 168 ms 17860 KB Output is correct
11 Correct 14 ms 3404 KB Output is correct
12 Correct 154 ms 10192 KB Output is correct
13 Correct 218 ms 18112 KB Output is correct
14 Correct 193 ms 16560 KB Output is correct
15 Correct 200 ms 17468 KB Output is correct
16 Correct 209 ms 17604 KB Output is correct
17 Correct 202 ms 17476 KB Output is correct
18 Correct 200 ms 17488 KB Output is correct
19 Correct 206 ms 17476 KB Output is correct
20 Correct 115 ms 13108 KB Output is correct
21 Correct 29 ms 6600 KB Output is correct
22 Correct 169 ms 16176 KB Output is correct
23 Correct 182 ms 16448 KB Output is correct
24 Correct 181 ms 16836 KB Output is correct
25 Correct 179 ms 16440 KB Output is correct
26 Correct 177 ms 17588 KB Output is correct
27 Correct 209 ms 17080 KB Output is correct
28 Correct 212 ms 18116 KB Output is correct
29 Correct 202 ms 17848 KB Output is correct
30 Correct 118 ms 13252 KB Output is correct
31 Correct 207 ms 18988 KB Output is correct
32 Correct 176 ms 17472 KB Output is correct
33 Correct 181 ms 19080 KB Output is correct
34 Correct 168 ms 18368 KB Output is correct
35 Correct 189 ms 18668 KB Output is correct
36 Correct 206 ms 18568 KB Output is correct
37 Correct 210 ms 17332 KB Output is correct
38 Correct 224 ms 20452 KB Output is correct
39 Correct 169 ms 19012 KB Output is correct
40 Correct 210 ms 19344 KB Output is correct
41 Correct 201 ms 18328 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 284 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1028 ms 82020 KB Output is correct
21 Correct 1117 ms 101544 KB Output is correct
22 Correct 673 ms 89400 KB Output is correct
23 Correct 625 ms 81372 KB Output is correct
24 Correct 670 ms 89400 KB Output is correct
25 Correct 1335 ms 102740 KB Output is correct
26 Correct 812 ms 86788 KB Output is correct
27 Correct 1521 ms 133092 KB Output is correct
28 Correct 570 ms 52252 KB Output is correct
29 Correct 255 ms 20408 KB Output is correct
30 Correct 234 ms 20408 KB Output is correct
31 Correct 373 ms 47924 KB Output is correct
32 Correct 390 ms 51252 KB Output is correct
33 Correct 373 ms 49256 KB Output is correct
34 Correct 346 ms 47932 KB Output is correct
35 Correct 95 ms 15160 KB Output is correct
36 Correct 9 ms 2576 KB Output is correct
37 Correct 96 ms 23588 KB Output is correct
38 Correct 200 ms 17264 KB Output is correct
39 Correct 206 ms 20400 KB Output is correct
40 Correct 169 ms 19152 KB Output is correct
41 Correct 217 ms 19392 KB Output is correct
42 Correct 194 ms 18216 KB Output is correct
43 Correct 70 ms 5600 KB Output is correct
44 Correct 136 ms 9164 KB Output is correct
45 Correct 152 ms 10128 KB Output is correct
46 Correct 215 ms 18112 KB Output is correct
47 Correct 195 ms 16584 KB Output is correct
48 Correct 205 ms 17860 KB Output is correct
49 Correct 113 ms 13256 KB Output is correct
50 Correct 228 ms 20400 KB Output is correct
51 Correct 225 ms 19052 KB Output is correct
52 Correct 168 ms 17860 KB Output is correct
53 Correct 14 ms 3404 KB Output is correct
54 Correct 154 ms 10192 KB Output is correct
55 Correct 218 ms 18112 KB Output is correct
56 Correct 193 ms 16560 KB Output is correct
57 Correct 200 ms 17468 KB Output is correct
58 Correct 209 ms 17604 KB Output is correct
59 Correct 202 ms 17476 KB Output is correct
60 Correct 200 ms 17488 KB Output is correct
61 Correct 206 ms 17476 KB Output is correct
62 Correct 115 ms 13108 KB Output is correct
63 Correct 29 ms 6600 KB Output is correct
64 Correct 169 ms 16176 KB Output is correct
65 Correct 182 ms 16448 KB Output is correct
66 Correct 181 ms 16836 KB Output is correct
67 Correct 179 ms 16440 KB Output is correct
68 Correct 177 ms 17588 KB Output is correct
69 Correct 209 ms 17080 KB Output is correct
70 Correct 212 ms 18116 KB Output is correct
71 Correct 202 ms 17848 KB Output is correct
72 Correct 118 ms 13252 KB Output is correct
73 Correct 207 ms 18988 KB Output is correct
74 Correct 176 ms 17472 KB Output is correct
75 Correct 181 ms 19080 KB Output is correct
76 Correct 168 ms 18368 KB Output is correct
77 Correct 189 ms 18668 KB Output is correct
78 Correct 206 ms 18568 KB Output is correct
79 Correct 210 ms 17332 KB Output is correct
80 Correct 224 ms 20452 KB Output is correct
81 Correct 169 ms 19012 KB Output is correct
82 Correct 210 ms 19344 KB Output is correct
83 Correct 201 ms 18328 KB Output is correct
84 Correct 76 ms 12036 KB Output is correct
85 Execution timed out 4085 ms 494212 KB Time limit exceeded
86 Halted 0 ms 0 KB -