oj.uz

Submission #47413

# Submission time Handle Problem Language Result Execution time Memory
47413 2018-05-02T12:49:01 Z mirbek01 Construction of Highway (JOI18_construction) C++14
16 / 100
 940 ms 34968 KB 
# include <bits/stdc++.h>

using namespace std;

const int N = 1e5 + 2;

int n, c[N], a[N], b[N], h[N], fen[N], u[N];
int p[18][N], tin[N], tout[N], timer;
int t[N * 4];
vector <int> vec, g[N], vcc;

void dfs(int v, int pr = 0){
      tin[v] = ++ timer;
      p[0][v] = pr;
      for(int i = 1; i <= 17; i ++)
            p[i][v] = p[i - 1][p[i - 1][v]];
      for(int to : g[v]){
            if(to == pr) continue;
            h[to] = h[v] + 1;
            dfs(to, v);
      }
      tout[v] = timer;
}
inline bool upper(int a, int b){
      return tin[a] <= tin[b] && tout[a] >= tout[b];
}

inline int lca(int a, int b){
      if(upper(a, b)) return a;
      if(upper(b, a)) return b;
      for(int i = 17; i >= 0; i --)
            if(p[i][a] && !upper(p[i][a], b))
                  a = p[i][a];
      return p[0][a];
}

inline void update(int pos, int val, int v = 1, int tl = 1, int tr = n){
      if(tl == tr)
            t[v] = val;
      else {
            int tm = (tl + tr) >> 1;
            if(pos <= tm)
                  update(pos, val, v << 1, tl, tm);
            else
                  update(pos, val, (v << 1) | 1, tm + 1, tr);
            t[v] = max(t[v << 1], t[(v << 1) | 1]);
      }
}

inline int get(int l, int r, int v = 1, int tl = 1, int tr = n){
      if(l > tr || tl > r) return 0;
      if(l <= tl && tr <= r) return t[v];
      int tm = (tl + tr) >> 1;
      return max(get(l, r, v << 1, tl, tm),
                  get(l, r, (v << 1) | 1, tm + 1, tr));
}

inline void Update(int r, int val){
      for(; r > 0; r = (r & (r + 1)) - 1){
            fen[r] += val;
            if(!u[r]){
                  u[r] = 1;
                  vcc.emplace_back(r);
            }
      }
}

inline int Get(int pos){
      int res = 0;
      for(; pos <= n; pos |= pos + 1)
            res += fen[pos];
      return res;
}

int main(){
      ios_base::sync_with_stdio(0);

      scanf("%d", &n);

      for(int i = 1; i <= n; i ++){
            scanf("%d", &c[i]);
            vec.emplace_back(c[i]);
      }

      sort(vec.begin(), vec.end());
      vec.resize(unique(vec.begin(), vec.end()) - vec.begin());

      for(int i = 1; i <= n; i ++)
            c[i] = lower_bound(vec.begin(), vec.end(), c[i]) - vec.begin() + 1;

      for(int i = 1; i < n; i ++){
            scanf("%d %d", &a[i], &b[i]);
            g[a[i]].emplace_back(b[i]);
            g[b[i]].emplace_back(a[i]);
      }

      h[1] = 1;
      dfs(1);

      int siz = 0;

      for(int i = 1; i < n; i ++){
            int v = 1, prelca = 0;
            long long ans = 0;
            vcc.clear();
            while(1){
                  siz ++;
                  int mx = b[get(tin[v], tout[v])];
                  int LCA  = lca(mx, a[i]);
                  int f = h[LCA] - h[prelca], s = c[mx];
                  ans += Get(s + 1) * 1ll * f;
                  Update(s, f);
                  prelca = LCA;
                  if(v == a[i]) break;
                  int vv = a[i];
                  for(int i = 17; i >= 0; i --){
                        if(p[i][vv] && !upper(p[i][vv], LCA))
                              vv = p[i][vv];
                  }
                  v = vv;
            }
            if(siz >= n * 10) assert(0);
            for(int j = 0; j < vcc.size(); j ++)
                  fen[vcc[j]] = 0, u[vcc[j]] = 0;
            printf("%lld\n", ans);
            update(tin[b[i]], i);
      }
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:123:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0; j < vcc.size(); j ++)
                            ~~^~~~~~~~~~~~
construction.cpp:78:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d", &n);
       ~~~~~^~~~~~~~~~
construction.cpp:81:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &c[i]);
             ~~~~~^~~~~~~~~~~~~
construction.cpp:92:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d %d", &a[i], &b[i]);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2808 KB Output is correct
2 Correct 4 ms 2916 KB Output is correct
3 Correct 4 ms 2992 KB Output is correct
4 Correct 4 ms 2992 KB Output is correct
5 Correct 4 ms 3072 KB Output is correct
6 Correct 5 ms 3084 KB Output is correct
7 Correct 5 ms 3084 KB Output is correct
8 Correct 5 ms 3208 KB Output is correct
9 Correct 4 ms 3208 KB Output is correct
10 Correct 4 ms 3208 KB Output is correct
11 Correct 4 ms 3208 KB Output is correct
12 Correct 6 ms 3208 KB Output is correct
13 Correct 5 ms 3208 KB Output is correct
14 Correct 5 ms 3208 KB Output is correct
15 Correct 5 ms 3208 KB Output is correct
16 Correct 5 ms 3208 KB Output is correct
17 Correct 5 ms 3208 KB Output is correct
18 Correct 5 ms 3208 KB Output is correct
19 Correct 6 ms 3208 KB Output is correct
20 Correct 4 ms 3208 KB Output is correct
21 Correct 5 ms 3208 KB Output is correct
22 Correct 6 ms 3208 KB Output is correct
23 Correct 4 ms 3208 KB Output is correct
24 Correct 4 ms 3208 KB Output is correct
25 Correct 5 ms 3208 KB Output is correct
26 Correct 4 ms 3208 KB Output is correct
27 Correct 4 ms 3208 KB Output is correct
28 Correct 4 ms 3208 KB Output is correct
29 Correct 4 ms 3208 KB Output is correct
30 Correct 6 ms 3208 KB Output is correct
31 Correct 5 ms 3208 KB Output is correct
32 Correct 5 ms 3208 KB Output is correct
33 Correct 5 ms 3208 KB Output is correct
34 Correct 5 ms 3208 KB Output is correct
35 Correct 4 ms 3208 KB Output is correct
36 Correct 4 ms 3208 KB Output is correct
37 Correct 4 ms 3208 KB Output is correct
38 Correct 4 ms 3208 KB Output is correct
39 Correct 6 ms 3208 KB Output is correct
40 Correct 4 ms 3208 KB Output is correct
41 Correct 5 ms 3208 KB Output is correct
42 Correct 4 ms 3208 KB Output is correct
43 Correct 5 ms 3208 KB Output is correct
44 Correct 5 ms 3208 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2808 KB Output is correct
2 Correct 4 ms 2916 KB Output is correct
3 Correct 4 ms 2992 KB Output is correct
4 Correct 4 ms 2992 KB Output is correct
5 Correct 4 ms 3072 KB Output is correct
6 Correct 5 ms 3084 KB Output is correct
7 Correct 5 ms 3084 KB Output is correct
8 Correct 5 ms 3208 KB Output is correct
9 Correct 4 ms 3208 KB Output is correct
10 Correct 4 ms 3208 KB Output is correct
11 Correct 4 ms 3208 KB Output is correct
12 Correct 6 ms 3208 KB Output is correct
13 Correct 5 ms 3208 KB Output is correct
14 Correct 5 ms 3208 KB Output is correct
15 Correct 5 ms 3208 KB Output is correct
16 Correct 5 ms 3208 KB Output is correct
17 Correct 5 ms 3208 KB Output is correct
18 Correct 5 ms 3208 KB Output is correct
19 Correct 6 ms 3208 KB Output is correct
20 Correct 4 ms 3208 KB Output is correct
21 Correct 5 ms 3208 KB Output is correct
22 Correct 6 ms 3208 KB Output is correct
23 Correct 4 ms 3208 KB Output is correct
24 Correct 4 ms 3208 KB Output is correct
25 Correct 5 ms 3208 KB Output is correct
26 Correct 4 ms 3208 KB Output is correct
27 Correct 4 ms 3208 KB Output is correct
28 Correct 4 ms 3208 KB Output is correct
29 Correct 4 ms 3208 KB Output is correct
30 Correct 6 ms 3208 KB Output is correct
31 Correct 5 ms 3208 KB Output is correct
32 Correct 5 ms 3208 KB Output is correct
33 Correct 5 ms 3208 KB Output is correct
34 Correct 5 ms 3208 KB Output is correct
35 Correct 4 ms 3208 KB Output is correct
36 Correct 4 ms 3208 KB Output is correct
37 Correct 4 ms 3208 KB Output is correct
38 Correct 4 ms 3208 KB Output is correct
39 Correct 6 ms 3208 KB Output is correct
40 Correct 4 ms 3208 KB Output is correct
41 Correct 5 ms 3208 KB Output is correct
42 Correct 4 ms 3208 KB Output is correct
43 Correct 5 ms 3208 KB Output is correct
44 Correct 5 ms 3208 KB Output is correct
45 Correct 6 ms 3208 KB Output is correct
46 Correct 15 ms 3708 KB Output is correct
47 Correct 16 ms 3708 KB Output is correct
48 Correct 15 ms 3724 KB Output is correct
49 Correct 10 ms 3868 KB Output is correct
50 Correct 11 ms 3868 KB Output is correct
51 Correct 10 ms 3868 KB Output is correct
52 Correct 13 ms 3868 KB Output is correct
53 Correct 12 ms 3868 KB Output is correct
54 Correct 11 ms 3868 KB Output is correct
55 Correct 12 ms 3868 KB Output is correct
56 Correct 12 ms 3868 KB Output is correct
57 Correct 22 ms 3868 KB Output is correct
58 Correct 23 ms 3868 KB Output is correct
59 Correct 24 ms 3868 KB Output is correct
60 Correct 24 ms 3868 KB Output is correct
61 Correct 13 ms 3868 KB Output is correct
62 Correct 12 ms 3868 KB Output is correct
63 Correct 13 ms 3868 KB Output is correct
64 Correct 14 ms 3868 KB Output is correct
65 Correct 14 ms 3868 KB Output is correct
66 Correct 15 ms 3868 KB Output is correct
67 Correct 18 ms 3868 KB Output is correct
68 Correct 9 ms 3900 KB Output is correct
69 Correct 11 ms 3900 KB Output is correct
70 Correct 11 ms 3900 KB Output is correct
71 Correct 11 ms 3900 KB Output is correct
72 Correct 26 ms 3900 KB Output is correct
73 Correct 30 ms 3900 KB Output is correct
74 Correct 12 ms 3900 KB Output is correct
75 Correct 23 ms 3900 KB Output is correct
76 Correct 13 ms 3900 KB Output is correct
77 Correct 11 ms 3900 KB Output is correct
78 Correct 10 ms 3900 KB Output is correct
79 Correct 11 ms 3900 KB Output is correct
80 Correct 9 ms 3900 KB Output is correct
81 Correct 14 ms 3900 KB Output is correct
82 Correct 14 ms 3900 KB Output is correct
83 Correct 13 ms 3900 KB Output is correct
84 Correct 12 ms 3900 KB Output is correct
85 Correct 11 ms 3900 KB Output is correct
86 Correct 12 ms 3900 KB Output is correct

Subtask #3
0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2808 KB Output is correct
2 Correct 4 ms 2916 KB Output is correct
3 Correct 4 ms 2992 KB Output is correct
4 Correct 4 ms 2992 KB Output is correct
5 Correct 4 ms 3072 KB Output is correct
6 Correct 5 ms 3084 KB Output is correct
7 Correct 5 ms 3084 KB Output is correct
8 Correct 5 ms 3208 KB Output is correct
9 Correct 4 ms 3208 KB Output is correct
10 Correct 4 ms 3208 KB Output is correct
11 Correct 4 ms 3208 KB Output is correct
12 Correct 6 ms 3208 KB Output is correct
13 Correct 5 ms 3208 KB Output is correct
14 Correct 5 ms 3208 KB Output is correct
15 Correct 5 ms 3208 KB Output is correct
16 Correct 5 ms 3208 KB Output is correct
17 Correct 5 ms 3208 KB Output is correct
18 Correct 5 ms 3208 KB Output is correct
19 Correct 6 ms 3208 KB Output is correct
20 Correct 4 ms 3208 KB Output is correct
21 Correct 5 ms 3208 KB Output is correct
22 Correct 6 ms 3208 KB Output is correct
23 Correct 4 ms 3208 KB Output is correct
24 Correct 4 ms 3208 KB Output is correct
25 Correct 5 ms 3208 KB Output is correct
26 Correct 4 ms 3208 KB Output is correct
27 Correct 4 ms 3208 KB Output is correct
28 Correct 4 ms 3208 KB Output is correct
29 Correct 4 ms 3208 KB Output is correct
30 Correct 6 ms 3208 KB Output is correct
31 Correct 5 ms 3208 KB Output is correct
32 Correct 5 ms 3208 KB Output is correct
33 Correct 5 ms 3208 KB Output is correct
34 Correct 5 ms 3208 KB Output is correct
35 Correct 4 ms 3208 KB Output is correct
36 Correct 4 ms 3208 KB Output is correct
37 Correct 4 ms 3208 KB Output is correct
38 Correct 4 ms 3208 KB Output is correct
39 Correct 6 ms 3208 KB Output is correct
40 Correct 4 ms 3208 KB Output is correct
41 Correct 5 ms 3208 KB Output is correct
42 Correct 4 ms 3208 KB Output is correct
43 Correct 5 ms 3208 KB Output is correct
44 Correct 5 ms 3208 KB Output is correct
45 Correct 6 ms 3208 KB Output is correct
46 Correct 15 ms 3708 KB Output is correct
47 Correct 16 ms 3708 KB Output is correct
48 Correct 15 ms 3724 KB Output is correct
49 Correct 10 ms 3868 KB Output is correct
50 Correct 11 ms 3868 KB Output is correct
51 Correct 10 ms 3868 KB Output is correct
52 Correct 13 ms 3868 KB Output is correct
53 Correct 12 ms 3868 KB Output is correct
54 Correct 11 ms 3868 KB Output is correct
55 Correct 12 ms 3868 KB Output is correct
56 Correct 12 ms 3868 KB Output is correct
57 Correct 22 ms 3868 KB Output is correct
58 Correct 23 ms 3868 KB Output is correct
59 Correct 24 ms 3868 KB Output is correct
60 Correct 24 ms 3868 KB Output is correct
61 Correct 13 ms 3868 KB Output is correct
62 Correct 12 ms 3868 KB Output is correct
63 Correct 13 ms 3868 KB Output is correct
64 Correct 14 ms 3868 KB Output is correct
65 Correct 14 ms 3868 KB Output is correct
66 Correct 15 ms 3868 KB Output is correct
67 Correct 18 ms 3868 KB Output is correct
68 Correct 9 ms 3900 KB Output is correct
69 Correct 11 ms 3900 KB Output is correct
70 Correct 11 ms 3900 KB Output is correct
71 Correct 11 ms 3900 KB Output is correct
72 Correct 26 ms 3900 KB Output is correct
73 Correct 30 ms 3900 KB Output is correct
74 Correct 12 ms 3900 KB Output is correct
75 Correct 23 ms 3900 KB Output is correct
76 Correct 13 ms 3900 KB Output is correct
77 Correct 11 ms 3900 KB Output is correct
78 Correct 10 ms 3900 KB Output is correct
79 Correct 11 ms 3900 KB Output is correct
80 Correct 9 ms 3900 KB Output is correct
81 Correct 14 ms 3900 KB Output is correct
82 Correct 14 ms 3900 KB Output is correct
83 Correct 13 ms 3900 KB Output is correct
84 Correct 12 ms 3900 KB Output is correct
85 Correct 11 ms 3900 KB Output is correct
86 Correct 12 ms 3900 KB Output is correct
87 Correct 40 ms 4668 KB Output is correct
88 Correct 137 ms 7612 KB Output is correct
89 Correct 805 ms 18232 KB Output is correct
90 Correct 749 ms 18232 KB Output is correct
91 Correct 792 ms 18440 KB Output is correct
92 Correct 451 ms 22728 KB Output is correct
93 Correct 494 ms 22728 KB Output is correct
94 Correct 426 ms 22744 KB Output is correct
95 Correct 564 ms 22744 KB Output is correct
96 Correct 589 ms 22744 KB Output is correct
97 Correct 570 ms 22744 KB Output is correct
98 Correct 531 ms 22744 KB Output is correct
99 Correct 498 ms 22744 KB Output is correct
100 Runtime error 940 ms 34968 KB Execution killed with signal 11 (could be triggered by violating memory limits)
101 Halted 0 ms 0 KB -