답안 #47397 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
47397	2018-05-02T11:33:37 Z	mirbek01	Construction of Highway (JOI18_construction)	C++17	16 / 100	1000 ms	42460 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];
int p[18][N], tin[N], tout[N], timer;
pair <int, int> t[N * 4];
vector <int> vec, g[N];


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;
}

bool upper(int a, int b){
      return tin[a] <= tin[b] && tout[a] >= tout[b];
}

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];
}

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

pair <int, int> get(int l, int r, int v = 1, int tl = 1, int tr = n){
      if(l > tr || tl > r) return {0, 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));
}

void Update(int r, int val){
      for(; r > 0; r = (r & (r + 1)) - 1)
            fen[r] += val;
}

int Get(int pos){
      int res = 0;
      for(; pos <= n + 1; 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;
            vector < pair <int, int> > vc;
            while(1){
                  pair <int, int> mx = get(tin[v], tout[v]);
                  int LCA  = lca(mx.second, a[i]);
                  vc.push_back({h[LCA] - h[prelca], c[mx.second]});
//                  if(i == 7){
//                        cout << mx.second << " " << a[i] << " " << LCA << endl;
//                  }
                  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;
            }

            long long ans = 0;

            for(int j = 0; j < vc.size(); j ++){
                  int f = vc[j].first, s = vc[j].second;
                  ans += Get(s + 1) * f;
                  Update(s, f);
            }
            printf("%I64d\n", ans);
            update(tin[b[i]], i, b[i]);
            for(int j = 0; j < vc.size(); j ++){
                  int f = vc[j].first, s = vc[j].second;
                  Update(s, -f);
            }
      }
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:116:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0; j < vc.size(); j ++){
                            ~~^~~~~~~~~~~
construction.cpp:121:34: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
             printf("%I64d\n", ans);
                                  ^
construction.cpp:123:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0; j < vc.size(); j ++){
                            ~~^~~~~~~~~~~
construction.cpp:73:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%d", &n);
       ~~~~~^~~~~~~~~~
construction.cpp:76:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &c[i]);
             ~~~~~^~~~~~~~~~~~~
construction.cpp:87:18: 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	3 ms	2808 KB	Output is correct
2	Correct	3 ms	2808 KB	Output is correct
3	Correct	4 ms	2992 KB	Output is correct
4	Correct	4 ms	3068 KB	Output is correct
5	Correct	5 ms	3100 KB	Output is correct
6	Correct	4 ms	3116 KB	Output is correct
7	Correct	11 ms	3224 KB	Output is correct
8	Correct	5 ms	3224 KB	Output is correct
9	Correct	4 ms	3224 KB	Output is correct
10	Correct	5 ms	3224 KB	Output is correct
11	Correct	5 ms	3224 KB	Output is correct
12	Correct	4 ms	3260 KB	Output is correct
13	Correct	4 ms	3260 KB	Output is correct
14	Correct	4 ms	3260 KB	Output is correct
15	Correct	5 ms	3260 KB	Output is correct
16	Correct	5 ms	3260 KB	Output is correct
17	Correct	6 ms	3260 KB	Output is correct
18	Correct	5 ms	3260 KB	Output is correct
19	Correct	6 ms	3260 KB	Output is correct
20	Correct	5 ms	3260 KB	Output is correct
21	Correct	4 ms	3260 KB	Output is correct
22	Correct	5 ms	3260 KB	Output is correct
23	Correct	5 ms	3260 KB	Output is correct
24	Correct	5 ms	3260 KB	Output is correct
25	Correct	5 ms	3264 KB	Output is correct
26	Correct	5 ms	3264 KB	Output is correct
27	Correct	4 ms	3264 KB	Output is correct
28	Correct	4 ms	3264 KB	Output is correct
29	Correct	4 ms	3264 KB	Output is correct
30	Correct	5 ms	3264 KB	Output is correct
31	Correct	5 ms	3264 KB	Output is correct
32	Correct	4 ms	3264 KB	Output is correct
33	Correct	5 ms	3264 KB	Output is correct
34	Correct	4 ms	3264 KB	Output is correct
35	Correct	4 ms	3264 KB	Output is correct
36	Correct	5 ms	3264 KB	Output is correct
37	Correct	4 ms	3264 KB	Output is correct
38	Correct	4 ms	3264 KB	Output is correct
39	Correct	5 ms	3264 KB	Output is correct
40	Correct	5 ms	3264 KB	Output is correct
41	Correct	5 ms	3376 KB	Output is correct
42	Correct	5 ms	3376 KB	Output is correct
43	Correct	6 ms	3376 KB	Output is correct
44	Correct	5 ms	3376 KB	Output is correct

Subtask #2
9.0 / 9.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	2808 KB	Output is correct
2	Correct	3 ms	2808 KB	Output is correct
3	Correct	4 ms	2992 KB	Output is correct
4	Correct	4 ms	3068 KB	Output is correct
5	Correct	5 ms	3100 KB	Output is correct
6	Correct	4 ms	3116 KB	Output is correct
7	Correct	11 ms	3224 KB	Output is correct
8	Correct	5 ms	3224 KB	Output is correct
9	Correct	4 ms	3224 KB	Output is correct
10	Correct	5 ms	3224 KB	Output is correct
11	Correct	5 ms	3224 KB	Output is correct
12	Correct	4 ms	3260 KB	Output is correct
13	Correct	4 ms	3260 KB	Output is correct
14	Correct	4 ms	3260 KB	Output is correct
15	Correct	5 ms	3260 KB	Output is correct
16	Correct	5 ms	3260 KB	Output is correct
17	Correct	6 ms	3260 KB	Output is correct
18	Correct	5 ms	3260 KB	Output is correct
19	Correct	6 ms	3260 KB	Output is correct
20	Correct	5 ms	3260 KB	Output is correct
21	Correct	4 ms	3260 KB	Output is correct
22	Correct	5 ms	3260 KB	Output is correct
23	Correct	5 ms	3260 KB	Output is correct
24	Correct	5 ms	3260 KB	Output is correct
25	Correct	5 ms	3264 KB	Output is correct
26	Correct	5 ms	3264 KB	Output is correct
27	Correct	4 ms	3264 KB	Output is correct
28	Correct	4 ms	3264 KB	Output is correct
29	Correct	4 ms	3264 KB	Output is correct
30	Correct	5 ms	3264 KB	Output is correct
31	Correct	5 ms	3264 KB	Output is correct
32	Correct	4 ms	3264 KB	Output is correct
33	Correct	5 ms	3264 KB	Output is correct
34	Correct	4 ms	3264 KB	Output is correct
35	Correct	4 ms	3264 KB	Output is correct
36	Correct	5 ms	3264 KB	Output is correct
37	Correct	4 ms	3264 KB	Output is correct
38	Correct	4 ms	3264 KB	Output is correct
39	Correct	5 ms	3264 KB	Output is correct
40	Correct	5 ms	3264 KB	Output is correct
41	Correct	5 ms	3376 KB	Output is correct
42	Correct	5 ms	3376 KB	Output is correct
43	Correct	6 ms	3376 KB	Output is correct
44	Correct	5 ms	3376 KB	Output is correct
45	Correct	7 ms	3376 KB	Output is correct
46	Correct	17 ms	3900 KB	Output is correct
47	Correct	17 ms	3900 KB	Output is correct
48	Correct	18 ms	3900 KB	Output is correct
49	Correct	12 ms	4156 KB	Output is correct
50	Correct	12 ms	4244 KB	Output is correct
51	Correct	12 ms	4244 KB	Output is correct
52	Correct	13 ms	4244 KB	Output is correct
53	Correct	13 ms	4244 KB	Output is correct
54	Correct	14 ms	4244 KB	Output is correct
55	Correct	13 ms	4244 KB	Output is correct
56	Correct	13 ms	4244 KB	Output is correct
57	Correct	29 ms	4244 KB	Output is correct
58	Correct	33 ms	4244 KB	Output is correct
59	Correct	26 ms	4244 KB	Output is correct
60	Correct	27 ms	4244 KB	Output is correct
61	Correct	15 ms	4244 KB	Output is correct
62	Correct	14 ms	4244 KB	Output is correct
63	Correct	14 ms	4244 KB	Output is correct
64	Correct	17 ms	4244 KB	Output is correct
65	Correct	17 ms	4244 KB	Output is correct
66	Correct	17 ms	4244 KB	Output is correct
67	Correct	17 ms	4244 KB	Output is correct
68	Correct	11 ms	4244 KB	Output is correct
69	Correct	13 ms	4244 KB	Output is correct
70	Correct	12 ms	4244 KB	Output is correct
71	Correct	12 ms	4244 KB	Output is correct
72	Correct	29 ms	4244 KB	Output is correct
73	Correct	24 ms	4244 KB	Output is correct
74	Correct	15 ms	4244 KB	Output is correct
75	Correct	16 ms	4244 KB	Output is correct
76	Correct	13 ms	4244 KB	Output is correct
77	Correct	18 ms	4244 KB	Output is correct
78	Correct	11 ms	4244 KB	Output is correct
79	Correct	11 ms	4244 KB	Output is correct
80	Correct	11 ms	4244 KB	Output is correct
81	Correct	16 ms	4244 KB	Output is correct
82	Correct	15 ms	4244 KB	Output is correct
83	Correct	15 ms	4244 KB	Output is correct
84	Correct	18 ms	4244 KB	Output is correct
85	Correct	14 ms	4244 KB	Output is correct
86	Correct	14 ms	4244 KB	Output is correct

Subtask #3
0 / 84.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	2808 KB	Output is correct
2	Correct	3 ms	2808 KB	Output is correct
3	Correct	4 ms	2992 KB	Output is correct
4	Correct	4 ms	3068 KB	Output is correct
5	Correct	5 ms	3100 KB	Output is correct
6	Correct	4 ms	3116 KB	Output is correct
7	Correct	11 ms	3224 KB	Output is correct
8	Correct	5 ms	3224 KB	Output is correct
9	Correct	4 ms	3224 KB	Output is correct
10	Correct	5 ms	3224 KB	Output is correct
11	Correct	5 ms	3224 KB	Output is correct
12	Correct	4 ms	3260 KB	Output is correct
13	Correct	4 ms	3260 KB	Output is correct
14	Correct	4 ms	3260 KB	Output is correct
15	Correct	5 ms	3260 KB	Output is correct
16	Correct	5 ms	3260 KB	Output is correct
17	Correct	6 ms	3260 KB	Output is correct
18	Correct	5 ms	3260 KB	Output is correct
19	Correct	6 ms	3260 KB	Output is correct
20	Correct	5 ms	3260 KB	Output is correct
21	Correct	4 ms	3260 KB	Output is correct
22	Correct	5 ms	3260 KB	Output is correct
23	Correct	5 ms	3260 KB	Output is correct
24	Correct	5 ms	3260 KB	Output is correct
25	Correct	5 ms	3264 KB	Output is correct
26	Correct	5 ms	3264 KB	Output is correct
27	Correct	4 ms	3264 KB	Output is correct
28	Correct	4 ms	3264 KB	Output is correct
29	Correct	4 ms	3264 KB	Output is correct
30	Correct	5 ms	3264 KB	Output is correct
31	Correct	5 ms	3264 KB	Output is correct
32	Correct	4 ms	3264 KB	Output is correct
33	Correct	5 ms	3264 KB	Output is correct
34	Correct	4 ms	3264 KB	Output is correct
35	Correct	4 ms	3264 KB	Output is correct
36	Correct	5 ms	3264 KB	Output is correct
37	Correct	4 ms	3264 KB	Output is correct
38	Correct	4 ms	3264 KB	Output is correct
39	Correct	5 ms	3264 KB	Output is correct
40	Correct	5 ms	3264 KB	Output is correct
41	Correct	5 ms	3376 KB	Output is correct
42	Correct	5 ms	3376 KB	Output is correct
43	Correct	6 ms	3376 KB	Output is correct
44	Correct	5 ms	3376 KB	Output is correct
45	Correct	7 ms	3376 KB	Output is correct
46	Correct	17 ms	3900 KB	Output is correct
47	Correct	17 ms	3900 KB	Output is correct
48	Correct	18 ms	3900 KB	Output is correct
49	Correct	12 ms	4156 KB	Output is correct
50	Correct	12 ms	4244 KB	Output is correct
51	Correct	12 ms	4244 KB	Output is correct
52	Correct	13 ms	4244 KB	Output is correct
53	Correct	13 ms	4244 KB	Output is correct
54	Correct	14 ms	4244 KB	Output is correct
55	Correct	13 ms	4244 KB	Output is correct
56	Correct	13 ms	4244 KB	Output is correct
57	Correct	29 ms	4244 KB	Output is correct
58	Correct	33 ms	4244 KB	Output is correct
59	Correct	26 ms	4244 KB	Output is correct
60	Correct	27 ms	4244 KB	Output is correct
61	Correct	15 ms	4244 KB	Output is correct
62	Correct	14 ms	4244 KB	Output is correct
63	Correct	14 ms	4244 KB	Output is correct
64	Correct	17 ms	4244 KB	Output is correct
65	Correct	17 ms	4244 KB	Output is correct
66	Correct	17 ms	4244 KB	Output is correct
67	Correct	17 ms	4244 KB	Output is correct
68	Correct	11 ms	4244 KB	Output is correct
69	Correct	13 ms	4244 KB	Output is correct
70	Correct	12 ms	4244 KB	Output is correct
71	Correct	12 ms	4244 KB	Output is correct
72	Correct	29 ms	4244 KB	Output is correct
73	Correct	24 ms	4244 KB	Output is correct
74	Correct	15 ms	4244 KB	Output is correct
75	Correct	16 ms	4244 KB	Output is correct
76	Correct	13 ms	4244 KB	Output is correct
77	Correct	18 ms	4244 KB	Output is correct
78	Correct	11 ms	4244 KB	Output is correct
79	Correct	11 ms	4244 KB	Output is correct
80	Correct	11 ms	4244 KB	Output is correct
81	Correct	16 ms	4244 KB	Output is correct
82	Correct	15 ms	4244 KB	Output is correct
83	Correct	15 ms	4244 KB	Output is correct
84	Correct	18 ms	4244 KB	Output is correct
85	Correct	14 ms	4244 KB	Output is correct
86	Correct	14 ms	4244 KB	Output is correct
87	Correct	51 ms	5304 KB	Output is correct
88	Correct	163 ms	9680 KB	Output is correct
89	Correct	747 ms	24948 KB	Output is correct
90	Correct	810 ms	24948 KB	Output is correct
91	Correct	831 ms	24948 KB	Output is correct
92	Correct	467 ms	30200 KB	Output is correct
93	Correct	467 ms	32516 KB	Output is correct
94	Correct	507 ms	34532 KB	Output is correct
95	Correct	605 ms	34676 KB	Output is correct
96	Correct	552 ms	36896 KB	Output is correct
97	Correct	590 ms	39020 KB	Output is correct
98	Correct	613 ms	41124 KB	Output is correct
99	Correct	498 ms	42460 KB	Output is correct
100	Execution timed out	1080 ms	42460 KB	Time limit exceeded
101	Halted	0 ms	0 KB	-

답안 #47397

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