oj.uz

Submission #56430

# Submission time Handle Problem Language Result Execution time Memory
56430 2018-07-11T09:57:46 Z ics0503 Construction of Highway (JOI18_construction) C++17
100 / 100
 766 ms 91964 KB 
#include<stdio.h>
#include<vector>
using namespace std;
int par[121212][20];
int num[121212], S[121212], E[121212], cnt, tn, depth[121212];;
vector<int>edge[121212];
struct xy { int x, y; }tree[313131];
xy max(xy a, xy b) { if (a.x > b.x)return a; return b; }
void insert_g(int w, xy g) { for (int i = w + tn; i > 0; i /= 2)tree[i] = max(tree[i], g); }
int search_g(int s, int e) {
	s += tn; e += tn; xy res = { -1,0 };
	while (s <= e) {
		if ((s & 1) == 1)res = max(res, tree[s++]);
		if ((e & 1) == 0)res = max(res, tree[e--]);
		s /= 2; e /= 2;
	}
	return res.y;
}
void dfs(int w, int bef, int dep) {
	par[w][0] = bef; depth[w] = dep;
	for (int i = 0; par[w][i] != -1; i++)par[w][i + 1] = par[par[w][i]][i];
	num[w] = S[w] = ++cnt;
	for (int i = 0; i < edge[w].size(); i++)if (edge[w][i] != bef) {
		dfs(edge[w][i], w, dep + 1);
	}
	E[w] = cnt;
}
int get_C(int x) { return search_g(S[x], E[x]); }
int A[121212], B[121212];
int C[121212], CSD[121212];
int go(int a, int b) { for (int i = 0; i < 20; i++)if ((1 << i)&b)a = par[a][i]; return a; }
vector<xy>L;
xy temp[121212];
long long f(int s, int e) {
	if (s == e)return 0;
	int m = (s + e) / 2, i;
	long long res = f(s, m) + f(m + 1, e);
	int p1 = s, p2 = m + 1;
	int jw = m, S = 0;
	for (i = s; i <= m; i++) {
		while (jw + 1 <= e&&L[i].x < L[jw + 1].x)S += L[++jw].y;
		res += (long long)L[i].y * S;
	}
	for (i = s; i <= e; i++) {
		if (p1 == m + 1 || (p2 != e + 1 && L[p1].x < L[p2].x)) temp[i] = L[p2++];
		else temp[i] = L[p1++];
	}
	for (i = s; i <= e; i++) L[i] = temp[i];
	return res;
}
int main() {
	int n; scanf("%d", &n);
	int i, j;
	for (tn = 1; tn < n + 1; tn *= 2);
	for (i = 0; i < tn * 2; i++)tree[i].x = -1;
	for (i = 1; i <= n; i++)scanf("%d", &C[i]);
	for (i = 1; i <= n; i++)for (j = 0; j < 20; j++)par[i][j] = -1;
	for (i = 1; i <= n - 1; i++) {
		int s, e; scanf("%d%d", &s, &e);
		A[i] = s; B[i] = e;
		edge[s].push_back(e); edge[e].push_back(s);
	}
	dfs(1, -1, 0);
	CSD[1] = 0; insert_g(1, { 0,1 });
	for (i = 1; i <= n - 1; i++) {
		L.clear();
		int e = B[i], now = par[e][0];
		while (now != -1) {
			int nowC = get_C(now);
			int cs = go(now, depth[now] - CSD[nowC]);
			L.push_back({ C[nowC],depth[now] - CSD[nowC] + 1 });
			CSD[nowC] = depth[now] + 1;
			now = par[cs][0];
		}
		insert_g(num[e], { i, e });
		printf("%lld\n", f(0, L.size() - 1));
	}
	return 0;
}

Compilation message

construction.cpp: In function 'void dfs(int, int, int)':
construction.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < edge[w].size(); i++)if (edge[w][i] != bef) {
                  ~~^~~~~~~~~~~~~~~~
construction.cpp: In function 'int main()':
construction.cpp:52:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int n; scanf("%d", &n);
         ~~~~~^~~~~~~~~~
construction.cpp:56:31: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (i = 1; i <= n; i++)scanf("%d", &C[i]);
                          ~~~~~^~~~~~~~~~~~~
construction.cpp:59:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int s, e; scanf("%d%d", &s, &e);
             ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3320 KB Output is correct
2 Correct 4 ms 3320 KB Output is correct
3 Correct 4 ms 3380 KB Output is correct
4 Correct 5 ms 3424 KB Output is correct
5 Correct 5 ms 3476 KB Output is correct
6 Correct 6 ms 3524 KB Output is correct
7 Correct 6 ms 3544 KB Output is correct
8 Correct 5 ms 3552 KB Output is correct
9 Correct 4 ms 3552 KB Output is correct
10 Correct 5 ms 3576 KB Output is correct
11 Correct 6 ms 3576 KB Output is correct
12 Correct 5 ms 3576 KB Output is correct
13 Correct 5 ms 3660 KB Output is correct
14 Correct 5 ms 3660 KB Output is correct
15 Correct 7 ms 3660 KB Output is correct
16 Correct 6 ms 3660 KB Output is correct
17 Correct 6 ms 3660 KB Output is correct
18 Correct 7 ms 3660 KB Output is correct
19 Correct 6 ms 3660 KB Output is correct
20 Correct 6 ms 3660 KB Output is correct
21 Correct 7 ms 3704 KB Output is correct
22 Correct 5 ms 3704 KB Output is correct
23 Correct 5 ms 3704 KB Output is correct
24 Correct 6 ms 3704 KB Output is correct
25 Correct 7 ms 3704 KB Output is correct
26 Correct 5 ms 3704 KB Output is correct
27 Correct 6 ms 3704 KB Output is correct
28 Correct 6 ms 3704 KB Output is correct
29 Correct 5 ms 3704 KB Output is correct
30 Correct 7 ms 3704 KB Output is correct
31 Correct 6 ms 3704 KB Output is correct
32 Correct 5 ms 3704 KB Output is correct
33 Correct 6 ms 3704 KB Output is correct
34 Correct 5 ms 3704 KB Output is correct
35 Correct 5 ms 3704 KB Output is correct
36 Correct 5 ms 3704 KB Output is correct
37 Correct 6 ms 3704 KB Output is correct
38 Correct 5 ms 3704 KB Output is correct
39 Correct 5 ms 3704 KB Output is correct
40 Correct 5 ms 3704 KB Output is correct
41 Correct 6 ms 3704 KB Output is correct
42 Correct 7 ms 3704 KB Output is correct
43 Correct 7 ms 3704 KB Output is correct
44 Correct 7 ms 3704 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3320 KB Output is correct
2 Correct 4 ms 3320 KB Output is correct
3 Correct 4 ms 3380 KB Output is correct
4 Correct 5 ms 3424 KB Output is correct
5 Correct 5 ms 3476 KB Output is correct
6 Correct 6 ms 3524 KB Output is correct
7 Correct 6 ms 3544 KB Output is correct
8 Correct 5 ms 3552 KB Output is correct
9 Correct 4 ms 3552 KB Output is correct
10 Correct 5 ms 3576 KB Output is correct
11 Correct 6 ms 3576 KB Output is correct
12 Correct 5 ms 3576 KB Output is correct
13 Correct 5 ms 3660 KB Output is correct
14 Correct 5 ms 3660 KB Output is correct
15 Correct 7 ms 3660 KB Output is correct
16 Correct 6 ms 3660 KB Output is correct
17 Correct 6 ms 3660 KB Output is correct
18 Correct 7 ms 3660 KB Output is correct
19 Correct 6 ms 3660 KB Output is correct
20 Correct 6 ms 3660 KB Output is correct
21 Correct 7 ms 3704 KB Output is correct
22 Correct 5 ms 3704 KB Output is correct
23 Correct 5 ms 3704 KB Output is correct
24 Correct 6 ms 3704 KB Output is correct
25 Correct 7 ms 3704 KB Output is correct
26 Correct 5 ms 3704 KB Output is correct
27 Correct 6 ms 3704 KB Output is correct
28 Correct 6 ms 3704 KB Output is correct
29 Correct 5 ms 3704 KB Output is correct
30 Correct 7 ms 3704 KB Output is correct
31 Correct 6 ms 3704 KB Output is correct
32 Correct 5 ms 3704 KB Output is correct
33 Correct 6 ms 3704 KB Output is correct
34 Correct 5 ms 3704 KB Output is correct
35 Correct 5 ms 3704 KB Output is correct
36 Correct 5 ms 3704 KB Output is correct
37 Correct 6 ms 3704 KB Output is correct
38 Correct 5 ms 3704 KB Output is correct
39 Correct 5 ms 3704 KB Output is correct
40 Correct 5 ms 3704 KB Output is correct
41 Correct 6 ms 3704 KB Output is correct
42 Correct 7 ms 3704 KB Output is correct
43 Correct 7 ms 3704 KB Output is correct
44 Correct 7 ms 3704 KB Output is correct
45 Correct 7 ms 3704 KB Output is correct
46 Correct 13 ms 4104 KB Output is correct
47 Correct 14 ms 4104 KB Output is correct
48 Correct 17 ms 4120 KB Output is correct
49 Correct 15 ms 4380 KB Output is correct
50 Correct 12 ms 4460 KB Output is correct
51 Correct 12 ms 4480 KB Output is correct
52 Correct 11 ms 4480 KB Output is correct
53 Correct 11 ms 4496 KB Output is correct
54 Correct 13 ms 4548 KB Output is correct
55 Correct 15 ms 4576 KB Output is correct
56 Correct 15 ms 4624 KB Output is correct
57 Correct 18 ms 4624 KB Output is correct
58 Correct 20 ms 4624 KB Output is correct
59 Correct 18 ms 4624 KB Output is correct
60 Correct 17 ms 4624 KB Output is correct
61 Correct 12 ms 4652 KB Output is correct
62 Correct 18 ms 4652 KB Output is correct
63 Correct 12 ms 4652 KB Output is correct
64 Correct 25 ms 4652 KB Output is correct
65 Correct 13 ms 4652 KB Output is correct
66 Correct 14 ms 4652 KB Output is correct
67 Correct 14 ms 4652 KB Output is correct
68 Correct 14 ms 4712 KB Output is correct
69 Correct 9 ms 4712 KB Output is correct
70 Correct 10 ms 4732 KB Output is correct
71 Correct 9 ms 4760 KB Output is correct
72 Correct 14 ms 4760 KB Output is correct
73 Correct 14 ms 4760 KB Output is correct
74 Correct 9 ms 4760 KB Output is correct
75 Correct 14 ms 4760 KB Output is correct
76 Correct 8 ms 4760 KB Output is correct
77 Correct 15 ms 4760 KB Output is correct
78 Correct 10 ms 4760 KB Output is correct
79 Correct 9 ms 4760 KB Output is correct
80 Correct 9 ms 4760 KB Output is correct
81 Correct 10 ms 4760 KB Output is correct
82 Correct 10 ms 4760 KB Output is correct
83 Correct 11 ms 4760 KB Output is correct
84 Correct 15 ms 4760 KB Output is correct
85 Correct 10 ms 4760 KB Output is correct
86 Correct 9 ms 4760 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3320 KB Output is correct
2 Correct 4 ms 3320 KB Output is correct
3 Correct 4 ms 3380 KB Output is correct
4 Correct 5 ms 3424 KB Output is correct
5 Correct 5 ms 3476 KB Output is correct
6 Correct 6 ms 3524 KB Output is correct
7 Correct 6 ms 3544 KB Output is correct
8 Correct 5 ms 3552 KB Output is correct
9 Correct 4 ms 3552 KB Output is correct
10 Correct 5 ms 3576 KB Output is correct
11 Correct 6 ms 3576 KB Output is correct
12 Correct 5 ms 3576 KB Output is correct
13 Correct 5 ms 3660 KB Output is correct
14 Correct 5 ms 3660 KB Output is correct
15 Correct 7 ms 3660 KB Output is correct
16 Correct 6 ms 3660 KB Output is correct
17 Correct 6 ms 3660 KB Output is correct
18 Correct 7 ms 3660 KB Output is correct
19 Correct 6 ms 3660 KB Output is correct
20 Correct 6 ms 3660 KB Output is correct
21 Correct 7 ms 3704 KB Output is correct
22 Correct 5 ms 3704 KB Output is correct
23 Correct 5 ms 3704 KB Output is correct
24 Correct 6 ms 3704 KB Output is correct
25 Correct 7 ms 3704 KB Output is correct
26 Correct 5 ms 3704 KB Output is correct
27 Correct 6 ms 3704 KB Output is correct
28 Correct 6 ms 3704 KB Output is correct
29 Correct 5 ms 3704 KB Output is correct
30 Correct 7 ms 3704 KB Output is correct
31 Correct 6 ms 3704 KB Output is correct
32 Correct 5 ms 3704 KB Output is correct
33 Correct 6 ms 3704 KB Output is correct
34 Correct 5 ms 3704 KB Output is correct
35 Correct 5 ms 3704 KB Output is correct
36 Correct 5 ms 3704 KB Output is correct
37 Correct 6 ms 3704 KB Output is correct
38 Correct 5 ms 3704 KB Output is correct
39 Correct 5 ms 3704 KB Output is correct
40 Correct 5 ms 3704 KB Output is correct
41 Correct 6 ms 3704 KB Output is correct
42 Correct 7 ms 3704 KB Output is correct
43 Correct 7 ms 3704 KB Output is correct
44 Correct 7 ms 3704 KB Output is correct
45 Correct 7 ms 3704 KB Output is correct
46 Correct 13 ms 4104 KB Output is correct
47 Correct 14 ms 4104 KB Output is correct
48 Correct 17 ms 4120 KB Output is correct
49 Correct 15 ms 4380 KB Output is correct
50 Correct 12 ms 4460 KB Output is correct
51 Correct 12 ms 4480 KB Output is correct
52 Correct 11 ms 4480 KB Output is correct
53 Correct 11 ms 4496 KB Output is correct
54 Correct 13 ms 4548 KB Output is correct
55 Correct 15 ms 4576 KB Output is correct
56 Correct 15 ms 4624 KB Output is correct
57 Correct 18 ms 4624 KB Output is correct
58 Correct 20 ms 4624 KB Output is correct
59 Correct 18 ms 4624 KB Output is correct
60 Correct 17 ms 4624 KB Output is correct
61 Correct 12 ms 4652 KB Output is correct
62 Correct 18 ms 4652 KB Output is correct
63 Correct 12 ms 4652 KB Output is correct
64 Correct 25 ms 4652 KB Output is correct
65 Correct 13 ms 4652 KB Output is correct
66 Correct 14 ms 4652 KB Output is correct
67 Correct 14 ms 4652 KB Output is correct
68 Correct 14 ms 4712 KB Output is correct
69 Correct 9 ms 4712 KB Output is correct
70 Correct 10 ms 4732 KB Output is correct
71 Correct 9 ms 4760 KB Output is correct
72 Correct 14 ms 4760 KB Output is correct
73 Correct 14 ms 4760 KB Output is correct
74 Correct 9 ms 4760 KB Output is correct
75 Correct 14 ms 4760 KB Output is correct
76 Correct 8 ms 4760 KB Output is correct
77 Correct 15 ms 4760 KB Output is correct
78 Correct 10 ms 4760 KB Output is correct
79 Correct 9 ms 4760 KB Output is correct
80 Correct 9 ms 4760 KB Output is correct
81 Correct 10 ms 4760 KB Output is correct
82 Correct 10 ms 4760 KB Output is correct
83 Correct 11 ms 4760 KB Output is correct
84 Correct 15 ms 4760 KB Output is correct
85 Correct 10 ms 4760 KB Output is correct
86 Correct 9 ms 4760 KB Output is correct
87 Correct 28 ms 5548 KB Output is correct
88 Correct 109 ms 8748 KB Output is correct
89 Correct 374 ms 20564 KB Output is correct
90 Correct 353 ms 22572 KB Output is correct
91 Correct 404 ms 24848 KB Output is correct
92 Correct 213 ms 32940 KB Output is correct
93 Correct 269 ms 35052 KB Output is correct
94 Correct 252 ms 37164 KB Output is correct
95 Correct 228 ms 37164 KB Output is correct
96 Correct 219 ms 38640 KB Output is correct
97 Correct 267 ms 40916 KB Output is correct
98 Correct 217 ms 42936 KB Output is correct
99 Correct 270 ms 44352 KB Output is correct
100 Correct 744 ms 44352 KB Output is correct
101 Correct 604 ms 45132 KB Output is correct
102 Correct 650 ms 47308 KB Output is correct
103 Correct 711 ms 49336 KB Output is correct
104 Correct 332 ms 54564 KB Output is correct
105 Correct 273 ms 56688 KB Output is correct
106 Correct 376 ms 58720 KB Output is correct
107 Correct 386 ms 58720 KB Output is correct
108 Correct 416 ms 58720 KB Output is correct
109 Correct 416 ms 60188 KB Output is correct
110 Correct 246 ms 67736 KB Output is correct
111 Correct 314 ms 67736 KB Output is correct
112 Correct 306 ms 68832 KB Output is correct
113 Correct 312 ms 69416 KB Output is correct
114 Correct 766 ms 69416 KB Output is correct
115 Correct 678 ms 69748 KB Output is correct
116 Correct 337 ms 74188 KB Output is correct
117 Correct 268 ms 74360 KB Output is correct
118 Correct 227 ms 75760 KB Output is correct
119 Correct 217 ms 77348 KB Output is correct
120 Correct 209 ms 79508 KB Output is correct
121 Correct 218 ms 80760 KB Output is correct
122 Correct 201 ms 81836 KB Output is correct
123 Correct 365 ms 84580 KB Output is correct
124 Correct 312 ms 85912 KB Output is correct
125 Correct 356 ms 87520 KB Output is correct
126 Correct 286 ms 89904 KB Output is correct
127 Correct 244 ms 90872 KB Output is correct
128 Correct 433 ms 91964 KB Output is correct