oj.uz

Submission #132187

# Submission time Handle Problem Language Result Execution time Memory
132187 2019-07-18T12:21:44 Z imyujin Construction of Highway (JOI18_construction) C++14
100 / 100
 936 ms 24840 KB 
#include <bits/stdc++.h>
using namespace std;

#define MAXN 100005
#define fi first
#define se second
#define rb(x) ((x) & (-(x)))

typedef long long lint;
typedef pair<int, int> pii;

int C[MAXN], A[MAXN], B[MAXN];
vector<int> ed[MAXN];
int par[20][MAXN], dep[MAXN], dfsord[MAXN], dfsr[MAXN], dfsn;
int cs[MAXN], ch[MAXN];
int seg[4 * MAXN], bit[MAXN];
//int xxxx = 0;

int anc(int x, int d) {
	for(int i = 0; i < 20; i++) if((dep[x] - d) & (1 << i)) x = par[i][x];
	return x;
}

void dfs(int x) {
	dfsord[x] = ++dfsn;
	for(auto a : ed[x]) {
		par[0][a] = x;
		dep[a] = dep[x] + 1;
		dfs(a);
	}
	dfsr[x] = dfsn;
}

void updseg(int idx, int l, int r, int x, int y) {
	if(l == r) seg[idx] = y;
	else {
		int m = (l + r) / 2;
		if(x <= m) updseg(idx * 2, l, m, x, y);
		else updseg(idx * 2 + 1, m + 1, r, x, y);
		seg[idx] = max(seg[idx * 2], seg[idx * 2 + 1]);
	}
}

int gseg(int idx, int l, int r, int x, int y) {
	//if(idx == 1 && ++xxxx < 100) printf("gseg(x = %d, y = %d)\n", x, y);
	if(x <= l && r <= y) return seg[idx];
	if(r < x || y < l) return -1;
	int m = (l + r) / 2;
	return max(gseg(idx * 2, l, m, x, y), gseg(idx * 2 + 1, m + 1, r, x, y));
}

void updbit(int x, int y) { for(; x < MAXN; x += rb(x)) bit[x] += y; }
int gbit(int x) { int ans = 0; for(; x > 0; x -= rb(x)) ans += bit[x]; return ans; }

int main() {
	int N;

	scanf("%d", &N);
	for(int i = 1; i <= N; i++) scanf("%d", C + i);
	for(int i = 1; i < N; i++) scanf("%d%d", A + i, B + i);

	for(int i = 1; i < N; i++) ed[A[i]].push_back(B[i]);
	dep[1] = 1;
	dfs(1);
	for(int i = 1; i < 20; i++) for(int j = 1; j <= N; j++) par[i][j] = par[i - 1][par[i - 1][j]];

	for(int i = 1; i <= N; i++) cs[i - 1] = C[i];
	sort(cs, cs + N);
	for(int i = 1; i <= N; i++) C[i] = lower_bound(cs, cs + N, C[i]) - cs + 1;
	for(int i = 1; i < 4 * N; i++) seg[i] = -1;
	updseg(1, 0, N, dfsord[1], 0);
	ch[1] = 1;
	B[0] = 1;
	//printf("*\n");

	for(int i = 1; i < N; i++) {
		vector<pii> v;
		for(int t = A[i]; t != 0;) {
			//if(++xxxx < 100) printf("i = %d, t = %d\n", i, t);
			int c = B[gseg(1, 0, N, dfsord[t], dfsr[t])];
			//if(++xxxx < 100) printf("c = %d\n", c);
			v.push_back(make_pair(c, dep[t] - ch[c] + 1));
			int k = anc(t, ch[c] - 1);
			ch[c] = dep[t] + 1;
			t = k;
		}
		lint ans = 0ll;
		//for(auto a : v) printf("a = (%d, %d)\n", a.fi, a.se);
		for(auto a : v) {
			ans += lint(a.se) * gbit(C[a.fi] - 1);
			updbit(C[a.fi], a.se);
		}
		for(auto a : v) updbit(C[a.fi], -a.se);
		ch[B[i]] = 1;
		updseg(1, 0, N, dfsord[B[i]], i);
		printf("%lld\n", ans);
	}

	return 0;
}

Compilation message

construction.cpp: In function 'int main()':
construction.cpp:58:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
construction.cpp:59:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1; i <= N; i++) scanf("%d", C + i);
                              ~~~~~^~~~~~~~~~~~~
construction.cpp:60:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for(int i = 1; i < N; i++) 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 2808 KB Output is correct
3 Correct 4 ms 2808 KB Output is correct
4 Correct 4 ms 2808 KB Output is correct
5 Correct 3 ms 2936 KB Output is correct
6 Correct 5 ms 2936 KB Output is correct
7 Correct 5 ms 2936 KB Output is correct
8 Correct 5 ms 3064 KB Output is correct
9 Correct 5 ms 2936 KB Output is correct
10 Correct 5 ms 2936 KB Output is correct
11 Correct 5 ms 2936 KB Output is correct
12 Correct 5 ms 2936 KB Output is correct
13 Correct 5 ms 2936 KB Output is correct
14 Correct 5 ms 2936 KB Output is correct
15 Correct 5 ms 2808 KB Output is correct
16 Correct 5 ms 2936 KB Output is correct
17 Correct 5 ms 2936 KB Output is correct
18 Correct 5 ms 2936 KB Output is correct
19 Correct 5 ms 2936 KB Output is correct
20 Correct 5 ms 2936 KB Output is correct
21 Correct 5 ms 2936 KB Output is correct
22 Correct 5 ms 2936 KB Output is correct
23 Correct 5 ms 2936 KB Output is correct
24 Correct 5 ms 2936 KB Output is correct
25 Correct 5 ms 2936 KB Output is correct
26 Correct 5 ms 2884 KB Output is correct
27 Correct 5 ms 2936 KB Output is correct
28 Correct 5 ms 2936 KB Output is correct
29 Correct 5 ms 2936 KB Output is correct
30 Correct 5 ms 2936 KB Output is correct
31 Correct 6 ms 2936 KB Output is correct
32 Correct 5 ms 2936 KB Output is correct
33 Correct 5 ms 2936 KB Output is correct
34 Correct 5 ms 2936 KB Output is correct
35 Correct 5 ms 2936 KB Output is correct
36 Correct 5 ms 2940 KB Output is correct
37 Correct 5 ms 2936 KB Output is correct
38 Correct 5 ms 2936 KB Output is correct
39 Correct 5 ms 2936 KB Output is correct
40 Correct 5 ms 2936 KB Output is correct
41 Correct 5 ms 2936 KB Output is correct
42 Correct 5 ms 2936 KB Output is correct
43 Correct 5 ms 2936 KB Output is correct
44 Correct 5 ms 2936 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 2808 KB Output is correct
3 Correct 4 ms 2808 KB Output is correct
4 Correct 4 ms 2808 KB Output is correct
5 Correct 3 ms 2936 KB Output is correct
6 Correct 5 ms 2936 KB Output is correct
7 Correct 5 ms 2936 KB Output is correct
8 Correct 5 ms 3064 KB Output is correct
9 Correct 5 ms 2936 KB Output is correct
10 Correct 5 ms 2936 KB Output is correct
11 Correct 5 ms 2936 KB Output is correct
12 Correct 5 ms 2936 KB Output is correct
13 Correct 5 ms 2936 KB Output is correct
14 Correct 5 ms 2936 KB Output is correct
15 Correct 5 ms 2808 KB Output is correct
16 Correct 5 ms 2936 KB Output is correct
17 Correct 5 ms 2936 KB Output is correct
18 Correct 5 ms 2936 KB Output is correct
19 Correct 5 ms 2936 KB Output is correct
20 Correct 5 ms 2936 KB Output is correct
21 Correct 5 ms 2936 KB Output is correct
22 Correct 5 ms 2936 KB Output is correct
23 Correct 5 ms 2936 KB Output is correct
24 Correct 5 ms 2936 KB Output is correct
25 Correct 5 ms 2936 KB Output is correct
26 Correct 5 ms 2884 KB Output is correct
27 Correct 5 ms 2936 KB Output is correct
28 Correct 5 ms 2936 KB Output is correct
29 Correct 5 ms 2936 KB Output is correct
30 Correct 5 ms 2936 KB Output is correct
31 Correct 6 ms 2936 KB Output is correct
32 Correct 5 ms 2936 KB Output is correct
33 Correct 5 ms 2936 KB Output is correct
34 Correct 5 ms 2936 KB Output is correct
35 Correct 5 ms 2936 KB Output is correct
36 Correct 5 ms 2940 KB Output is correct
37 Correct 5 ms 2936 KB Output is correct
38 Correct 5 ms 2936 KB Output is correct
39 Correct 5 ms 2936 KB Output is correct
40 Correct 5 ms 2936 KB Output is correct
41 Correct 5 ms 2936 KB Output is correct
42 Correct 5 ms 2936 KB Output is correct
43 Correct 5 ms 2936 KB Output is correct
44 Correct 5 ms 2936 KB Output is correct
45 Correct 6 ms 2936 KB Output is correct
46 Correct 15 ms 3448 KB Output is correct
47 Correct 15 ms 3448 KB Output is correct
48 Correct 15 ms 3448 KB Output is correct
49 Correct 10 ms 3704 KB Output is correct
50 Correct 10 ms 3704 KB Output is correct
51 Correct 10 ms 3704 KB Output is correct
52 Correct 10 ms 3576 KB Output is correct
53 Correct 11 ms 3576 KB Output is correct
54 Correct 11 ms 3548 KB Output is correct
55 Correct 11 ms 3576 KB Output is correct
56 Correct 11 ms 3576 KB Output is correct
57 Correct 23 ms 3448 KB Output is correct
58 Correct 24 ms 3448 KB Output is correct
59 Correct 23 ms 3448 KB Output is correct
60 Correct 22 ms 3448 KB Output is correct
61 Correct 12 ms 3580 KB Output is correct
62 Correct 12 ms 3576 KB Output is correct
63 Correct 12 ms 3576 KB Output is correct
64 Correct 16 ms 3448 KB Output is correct
65 Correct 14 ms 3448 KB Output is correct
66 Correct 15 ms 3448 KB Output is correct
67 Correct 16 ms 3448 KB Output is correct
68 Correct 9 ms 3704 KB Output is correct
69 Correct 10 ms 3576 KB Output is correct
70 Correct 10 ms 3576 KB Output is correct
71 Correct 10 ms 3576 KB Output is correct
72 Correct 21 ms 3448 KB Output is correct
73 Correct 21 ms 3496 KB Output is correct
74 Correct 11 ms 3580 KB Output is correct
75 Correct 11 ms 3448 KB Output is correct
76 Correct 12 ms 3576 KB Output is correct
77 Correct 10 ms 3448 KB Output is correct
78 Correct 12 ms 3448 KB Output is correct
79 Correct 10 ms 3448 KB Output is correct
80 Correct 10 ms 3448 KB Output is correct
81 Correct 12 ms 3576 KB Output is correct
82 Correct 12 ms 3576 KB Output is correct
83 Correct 11 ms 3452 KB Output is correct
84 Correct 11 ms 3448 KB Output is correct
85 Correct 11 ms 3448 KB Output is correct
86 Correct 11 ms 3448 KB Output is correct

Subtask #3
84.0 / 84.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2808 KB Output is correct
2 Correct 4 ms 2808 KB Output is correct
3 Correct 4 ms 2808 KB Output is correct
4 Correct 4 ms 2808 KB Output is correct
5 Correct 3 ms 2936 KB Output is correct
6 Correct 5 ms 2936 KB Output is correct
7 Correct 5 ms 2936 KB Output is correct
8 Correct 5 ms 3064 KB Output is correct
9 Correct 5 ms 2936 KB Output is correct
10 Correct 5 ms 2936 KB Output is correct
11 Correct 5 ms 2936 KB Output is correct
12 Correct 5 ms 2936 KB Output is correct
13 Correct 5 ms 2936 KB Output is correct
14 Correct 5 ms 2936 KB Output is correct
15 Correct 5 ms 2808 KB Output is correct
16 Correct 5 ms 2936 KB Output is correct
17 Correct 5 ms 2936 KB Output is correct
18 Correct 5 ms 2936 KB Output is correct
19 Correct 5 ms 2936 KB Output is correct
20 Correct 5 ms 2936 KB Output is correct
21 Correct 5 ms 2936 KB Output is correct
22 Correct 5 ms 2936 KB Output is correct
23 Correct 5 ms 2936 KB Output is correct
24 Correct 5 ms 2936 KB Output is correct
25 Correct 5 ms 2936 KB Output is correct
26 Correct 5 ms 2884 KB Output is correct
27 Correct 5 ms 2936 KB Output is correct
28 Correct 5 ms 2936 KB Output is correct
29 Correct 5 ms 2936 KB Output is correct
30 Correct 5 ms 2936 KB Output is correct
31 Correct 6 ms 2936 KB Output is correct
32 Correct 5 ms 2936 KB Output is correct
33 Correct 5 ms 2936 KB Output is correct
34 Correct 5 ms 2936 KB Output is correct
35 Correct 5 ms 2936 KB Output is correct
36 Correct 5 ms 2940 KB Output is correct
37 Correct 5 ms 2936 KB Output is correct
38 Correct 5 ms 2936 KB Output is correct
39 Correct 5 ms 2936 KB Output is correct
40 Correct 5 ms 2936 KB Output is correct
41 Correct 5 ms 2936 KB Output is correct
42 Correct 5 ms 2936 KB Output is correct
43 Correct 5 ms 2936 KB Output is correct
44 Correct 5 ms 2936 KB Output is correct
45 Correct 6 ms 2936 KB Output is correct
46 Correct 15 ms 3448 KB Output is correct
47 Correct 15 ms 3448 KB Output is correct
48 Correct 15 ms 3448 KB Output is correct
49 Correct 10 ms 3704 KB Output is correct
50 Correct 10 ms 3704 KB Output is correct
51 Correct 10 ms 3704 KB Output is correct
52 Correct 10 ms 3576 KB Output is correct
53 Correct 11 ms 3576 KB Output is correct
54 Correct 11 ms 3548 KB Output is correct
55 Correct 11 ms 3576 KB Output is correct
56 Correct 11 ms 3576 KB Output is correct
57 Correct 23 ms 3448 KB Output is correct
58 Correct 24 ms 3448 KB Output is correct
59 Correct 23 ms 3448 KB Output is correct
60 Correct 22 ms 3448 KB Output is correct
61 Correct 12 ms 3580 KB Output is correct
62 Correct 12 ms 3576 KB Output is correct
63 Correct 12 ms 3576 KB Output is correct
64 Correct 16 ms 3448 KB Output is correct
65 Correct 14 ms 3448 KB Output is correct
66 Correct 15 ms 3448 KB Output is correct
67 Correct 16 ms 3448 KB Output is correct
68 Correct 9 ms 3704 KB Output is correct
69 Correct 10 ms 3576 KB Output is correct
70 Correct 10 ms 3576 KB Output is correct
71 Correct 10 ms 3576 KB Output is correct
72 Correct 21 ms 3448 KB Output is correct
73 Correct 21 ms 3496 KB Output is correct
74 Correct 11 ms 3580 KB Output is correct
75 Correct 11 ms 3448 KB Output is correct
76 Correct 12 ms 3576 KB Output is correct
77 Correct 10 ms 3448 KB Output is correct
78 Correct 12 ms 3448 KB Output is correct
79 Correct 10 ms 3448 KB Output is correct
80 Correct 10 ms 3448 KB Output is correct
81 Correct 12 ms 3576 KB Output is correct
82 Correct 12 ms 3576 KB Output is correct
83 Correct 11 ms 3452 KB Output is correct
84 Correct 11 ms 3448 KB Output is correct
85 Correct 11 ms 3448 KB Output is correct
86 Correct 11 ms 3448 KB Output is correct
87 Correct 34 ms 4472 KB Output is correct
88 Correct 119 ms 7928 KB Output is correct
89 Correct 491 ms 18696 KB Output is correct
90 Correct 484 ms 18848 KB Output is correct
91 Correct 479 ms 18812 KB Output is correct
92 Correct 193 ms 24824 KB Output is correct
93 Correct 206 ms 24824 KB Output is correct
94 Correct 219 ms 24840 KB Output is correct
95 Correct 225 ms 21496 KB Output is correct
96 Correct 231 ms 21496 KB Output is correct
97 Correct 278 ms 21496 KB Output is correct
98 Correct 252 ms 21624 KB Output is correct
99 Correct 258 ms 21040 KB Output is correct
100 Correct 850 ms 19192 KB Output is correct
101 Correct 881 ms 19124 KB Output is correct
102 Correct 880 ms 19192 KB Output is correct
103 Correct 936 ms 19220 KB Output is correct
104 Correct 304 ms 20904 KB Output is correct
105 Correct 317 ms 21112 KB Output is correct
106 Correct 305 ms 21072 KB Output is correct
107 Correct 499 ms 18296 KB Output is correct
108 Correct 473 ms 18684 KB Output is correct
109 Correct 520 ms 18808 KB Output is correct
110 Correct 194 ms 24696 KB Output is correct
111 Correct 225 ms 21492 KB Output is correct
112 Correct 224 ms 21496 KB Output is correct
113 Correct 220 ms 21032 KB Output is correct
114 Correct 872 ms 19124 KB Output is correct
115 Correct 934 ms 19320 KB Output is correct
116 Correct 295 ms 20992 KB Output is correct
117 Correct 226 ms 19832 KB Output is correct
118 Correct 222 ms 19320 KB Output is correct
119 Correct 221 ms 19192 KB Output is correct
120 Correct 237 ms 19828 KB Output is correct
121 Correct 253 ms 19448 KB Output is correct
122 Correct 217 ms 19192 KB Output is correct
123 Correct 318 ms 19864 KB Output is correct
124 Correct 313 ms 19448 KB Output is correct
125 Correct 314 ms 19320 KB Output is correct
126 Correct 308 ms 19896 KB Output is correct
127 Correct 303 ms 19544 KB Output is correct
128 Correct 296 ms 19320 KB Output is correct