답안 #47416 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
47416	2018-05-02T14:00:16 Z	mirbek01	Construction of Highway (JOI18_construction)	C++17	16 / 100	1000 ms	22428 KB

construction

# 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 <= 16; 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 = 16; i >= 0; i --)
            if(p[i][a] && !upper(p[i][a], b))
                  a = p[i][a];
      return p[0][a];
}

inline int max(int a, int b){
      return (a > b) ? a : b;
}

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

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(){
      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);

      for(int i = 1; i < n; i ++){
            int v = 1, prelca = 0;
            long long ans = 0;
            vcc.clear();
            while(1){
                  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 = 16; i >= 0; i --){
                        if(p[i][vv] && !upper(p[i][vv], LCA))
                              vv = p[i][vv];
                  }
                  v = vv;
            }
            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:82:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d", &n);
       ~~~~~^~~~~~~~~~
construction.cpp:85:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &c[i]);
             ~~~~~^~~~~~~~~~~~~
construction.cpp:96:18: 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

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	2808 KB	Output is correct
2	Correct	4 ms	2920 KB	Output is correct
3	Correct	4 ms	2956 KB	Output is correct
4	Correct	4 ms	2956 KB	Output is correct
5	Correct	5 ms	3072 KB	Output is correct
6	Correct	5 ms	3132 KB	Output is correct
7	Correct	5 ms	3132 KB	Output is correct
8	Correct	4 ms	3132 KB	Output is correct
9	Correct	4 ms	3132 KB	Output is correct
10	Correct	4 ms	3132 KB	Output is correct
11	Correct	6 ms	3132 KB	Output is correct
12	Correct	4 ms	3152 KB	Output is correct
13	Correct	5 ms	3152 KB	Output is correct
14	Correct	5 ms	3152 KB	Output is correct
15	Correct	5 ms	3152 KB	Output is correct
16	Correct	5 ms	3152 KB	Output is correct
17	Correct	5 ms	3152 KB	Output is correct
18	Correct	6 ms	3152 KB	Output is correct
19	Correct	5 ms	3152 KB	Output is correct
20	Correct	4 ms	3152 KB	Output is correct
21	Correct	9 ms	3152 KB	Output is correct
22	Correct	4 ms	3152 KB	Output is correct
23	Correct	4 ms	3152 KB	Output is correct
24	Correct	4 ms	3152 KB	Output is correct
25	Correct	4 ms	3152 KB	Output is correct
26	Correct	4 ms	3152 KB	Output is correct
27	Correct	4 ms	3152 KB	Output is correct
28	Correct	5 ms	3152 KB	Output is correct
29	Correct	6 ms	3152 KB	Output is correct
30	Correct	6 ms	3152 KB	Output is correct
31	Correct	4 ms	3152 KB	Output is correct
32	Correct	4 ms	3152 KB	Output is correct
33	Correct	4 ms	3152 KB	Output is correct
34	Correct	4 ms	3152 KB	Output is correct
35	Correct	4 ms	3152 KB	Output is correct
36	Correct	4 ms	3152 KB	Output is correct
37	Correct	4 ms	3152 KB	Output is correct
38	Correct	4 ms	3152 KB	Output is correct
39	Correct	6 ms	3152 KB	Output is correct
40	Correct	4 ms	3152 KB	Output is correct
41	Correct	4 ms	3152 KB	Output is correct
42	Correct	4 ms	3152 KB	Output is correct
43	Correct	4 ms	3152 KB	Output is correct
44	Correct	4 ms	3152 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	2808 KB	Output is correct
2	Correct	4 ms	2920 KB	Output is correct
3	Correct	4 ms	2956 KB	Output is correct
4	Correct	4 ms	2956 KB	Output is correct
5	Correct	5 ms	3072 KB	Output is correct
6	Correct	5 ms	3132 KB	Output is correct
7	Correct	5 ms	3132 KB	Output is correct
8	Correct	4 ms	3132 KB	Output is correct
9	Correct	4 ms	3132 KB	Output is correct
10	Correct	4 ms	3132 KB	Output is correct
11	Correct	6 ms	3132 KB	Output is correct
12	Correct	4 ms	3152 KB	Output is correct
13	Correct	5 ms	3152 KB	Output is correct
14	Correct	5 ms	3152 KB	Output is correct
15	Correct	5 ms	3152 KB	Output is correct
16	Correct	5 ms	3152 KB	Output is correct
17	Correct	5 ms	3152 KB	Output is correct
18	Correct	6 ms	3152 KB	Output is correct
19	Correct	5 ms	3152 KB	Output is correct
20	Correct	4 ms	3152 KB	Output is correct
21	Correct	9 ms	3152 KB	Output is correct
22	Correct	4 ms	3152 KB	Output is correct
23	Correct	4 ms	3152 KB	Output is correct
24	Correct	4 ms	3152 KB	Output is correct
25	Correct	4 ms	3152 KB	Output is correct
26	Correct	4 ms	3152 KB	Output is correct
27	Correct	4 ms	3152 KB	Output is correct
28	Correct	5 ms	3152 KB	Output is correct
29	Correct	6 ms	3152 KB	Output is correct
30	Correct	6 ms	3152 KB	Output is correct
31	Correct	4 ms	3152 KB	Output is correct
32	Correct	4 ms	3152 KB	Output is correct
33	Correct	4 ms	3152 KB	Output is correct
34	Correct	4 ms	3152 KB	Output is correct
35	Correct	4 ms	3152 KB	Output is correct
36	Correct	4 ms	3152 KB	Output is correct
37	Correct	4 ms	3152 KB	Output is correct
38	Correct	4 ms	3152 KB	Output is correct
39	Correct	6 ms	3152 KB	Output is correct
40	Correct	4 ms	3152 KB	Output is correct
41	Correct	4 ms	3152 KB	Output is correct
42	Correct	4 ms	3152 KB	Output is correct
43	Correct	4 ms	3152 KB	Output is correct
44	Correct	4 ms	3152 KB	Output is correct
45	Correct	6 ms	3196 KB	Output is correct
46	Correct	17 ms	3580 KB	Output is correct
47	Correct	16 ms	3580 KB	Output is correct
48	Correct	15 ms	3596 KB	Output is correct
49	Correct	10 ms	3868 KB	Output is correct
50	Correct	10 ms	3988 KB	Output is correct
51	Correct	10 ms	3988 KB	Output is correct
52	Correct	11 ms	3988 KB	Output is correct
53	Correct	13 ms	3988 KB	Output is correct
54	Correct	15 ms	3988 KB	Output is correct
55	Correct	21 ms	3988 KB	Output is correct
56	Correct	14 ms	3988 KB	Output is correct
57	Correct	26 ms	3988 KB	Output is correct
58	Correct	30 ms	3988 KB	Output is correct
59	Correct	26 ms	3988 KB	Output is correct
60	Correct	24 ms	3988 KB	Output is correct
61	Correct	12 ms	3988 KB	Output is correct
62	Correct	11 ms	3988 KB	Output is correct
63	Correct	11 ms	3988 KB	Output is correct
64	Correct	13 ms	3988 KB	Output is correct
65	Correct	15 ms	3988 KB	Output is correct
66	Correct	15 ms	3988 KB	Output is correct
67	Correct	21 ms	3988 KB	Output is correct
68	Correct	13 ms	3988 KB	Output is correct
69	Correct	11 ms	3988 KB	Output is correct
70	Correct	11 ms	3988 KB	Output is correct
71	Correct	10 ms	3988 KB	Output is correct
72	Correct	22 ms	3988 KB	Output is correct
73	Correct	21 ms	3988 KB	Output is correct
74	Correct	15 ms	3988 KB	Output is correct
75	Correct	10 ms	3988 KB	Output is correct
76	Correct	10 ms	3988 KB	Output is correct
77	Correct	10 ms	3988 KB	Output is correct
78	Correct	12 ms	3988 KB	Output is correct
79	Correct	10 ms	3988 KB	Output is correct
80	Correct	10 ms	3988 KB	Output is correct
81	Correct	14 ms	3988 KB	Output is correct
82	Correct	13 ms	3988 KB	Output is correct
83	Correct	13 ms	3988 KB	Output is correct
84	Correct	12 ms	3988 KB	Output is correct
85	Correct	14 ms	3988 KB	Output is correct
86	Correct	13 ms	3988 KB	Output is correct

Subtask #3
0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	2808 KB	Output is correct
2	Correct	4 ms	2920 KB	Output is correct
3	Correct	4 ms	2956 KB	Output is correct
4	Correct	4 ms	2956 KB	Output is correct
5	Correct	5 ms	3072 KB	Output is correct
6	Correct	5 ms	3132 KB	Output is correct
7	Correct	5 ms	3132 KB	Output is correct
8	Correct	4 ms	3132 KB	Output is correct
9	Correct	4 ms	3132 KB	Output is correct
10	Correct	4 ms	3132 KB	Output is correct
11	Correct	6 ms	3132 KB	Output is correct
12	Correct	4 ms	3152 KB	Output is correct
13	Correct	5 ms	3152 KB	Output is correct
14	Correct	5 ms	3152 KB	Output is correct
15	Correct	5 ms	3152 KB	Output is correct
16	Correct	5 ms	3152 KB	Output is correct
17	Correct	5 ms	3152 KB	Output is correct
18	Correct	6 ms	3152 KB	Output is correct
19	Correct	5 ms	3152 KB	Output is correct
20	Correct	4 ms	3152 KB	Output is correct
21	Correct	9 ms	3152 KB	Output is correct
22	Correct	4 ms	3152 KB	Output is correct
23	Correct	4 ms	3152 KB	Output is correct
24	Correct	4 ms	3152 KB	Output is correct
25	Correct	4 ms	3152 KB	Output is correct
26	Correct	4 ms	3152 KB	Output is correct
27	Correct	4 ms	3152 KB	Output is correct
28	Correct	5 ms	3152 KB	Output is correct
29	Correct	6 ms	3152 KB	Output is correct
30	Correct	6 ms	3152 KB	Output is correct
31	Correct	4 ms	3152 KB	Output is correct
32	Correct	4 ms	3152 KB	Output is correct
33	Correct	4 ms	3152 KB	Output is correct
34	Correct	4 ms	3152 KB	Output is correct
35	Correct	4 ms	3152 KB	Output is correct
36	Correct	4 ms	3152 KB	Output is correct
37	Correct	4 ms	3152 KB	Output is correct
38	Correct	4 ms	3152 KB	Output is correct
39	Correct	6 ms	3152 KB	Output is correct
40	Correct	4 ms	3152 KB	Output is correct
41	Correct	4 ms	3152 KB	Output is correct
42	Correct	4 ms	3152 KB	Output is correct
43	Correct	4 ms	3152 KB	Output is correct
44	Correct	4 ms	3152 KB	Output is correct
45	Correct	6 ms	3196 KB	Output is correct
46	Correct	17 ms	3580 KB	Output is correct
47	Correct	16 ms	3580 KB	Output is correct
48	Correct	15 ms	3596 KB	Output is correct
49	Correct	10 ms	3868 KB	Output is correct
50	Correct	10 ms	3988 KB	Output is correct
51	Correct	10 ms	3988 KB	Output is correct
52	Correct	11 ms	3988 KB	Output is correct
53	Correct	13 ms	3988 KB	Output is correct
54	Correct	15 ms	3988 KB	Output is correct
55	Correct	21 ms	3988 KB	Output is correct
56	Correct	14 ms	3988 KB	Output is correct
57	Correct	26 ms	3988 KB	Output is correct
58	Correct	30 ms	3988 KB	Output is correct
59	Correct	26 ms	3988 KB	Output is correct
60	Correct	24 ms	3988 KB	Output is correct
61	Correct	12 ms	3988 KB	Output is correct
62	Correct	11 ms	3988 KB	Output is correct
63	Correct	11 ms	3988 KB	Output is correct
64	Correct	13 ms	3988 KB	Output is correct
65	Correct	15 ms	3988 KB	Output is correct
66	Correct	15 ms	3988 KB	Output is correct
67	Correct	21 ms	3988 KB	Output is correct
68	Correct	13 ms	3988 KB	Output is correct
69	Correct	11 ms	3988 KB	Output is correct
70	Correct	11 ms	3988 KB	Output is correct
71	Correct	10 ms	3988 KB	Output is correct
72	Correct	22 ms	3988 KB	Output is correct
73	Correct	21 ms	3988 KB	Output is correct
74	Correct	15 ms	3988 KB	Output is correct
75	Correct	10 ms	3988 KB	Output is correct
76	Correct	10 ms	3988 KB	Output is correct
77	Correct	10 ms	3988 KB	Output is correct
78	Correct	12 ms	3988 KB	Output is correct
79	Correct	10 ms	3988 KB	Output is correct
80	Correct	10 ms	3988 KB	Output is correct
81	Correct	14 ms	3988 KB	Output is correct
82	Correct	13 ms	3988 KB	Output is correct
83	Correct	13 ms	3988 KB	Output is correct
84	Correct	12 ms	3988 KB	Output is correct
85	Correct	14 ms	3988 KB	Output is correct
86	Correct	13 ms	3988 KB	Output is correct
87	Correct	40 ms	4540 KB	Output is correct
88	Correct	137 ms	7500 KB	Output is correct
89	Correct	746 ms	17716 KB	Output is correct
90	Correct	741 ms	17848 KB	Output is correct
91	Correct	770 ms	17848 KB	Output is correct
92	Correct	544 ms	22324 KB	Output is correct
93	Correct	453 ms	22360 KB	Output is correct
94	Correct	440 ms	22428 KB	Output is correct
95	Correct	533 ms	22428 KB	Output is correct
96	Correct	552 ms	22428 KB	Output is correct
97	Correct	400 ms	22428 KB	Output is correct
98	Correct	586 ms	22428 KB	Output is correct
99	Correct	564 ms	22428 KB	Output is correct
100	Execution timed out	1076 ms	22428 KB	Time limit exceeded
101	Halted	0 ms	0 KB	-

답안 #47416

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 9.0 / 9.0

Subtask #3 0 / 84.0

Subtask #1
7.0 / 7.0

Subtask #2
9.0 / 9.0

Subtask #3
0 / 84.0