oj.uz

Submission #99275

# Submission time Handle Problem Language Result Execution time Memory
99275 2019-03-02T03:56:37 Z ainta Unique Cities (JOI19_ho_t5) C++17
100 / 100
 1302 ms 83716 KB 
#include<cstdio>
#include<algorithm>
#include<vector>
#define N_ 201000
using namespace std;
int n, m, Col[N_], Num[N_], cnt, Ed[N_], S[N_];
vector<int>E[N_], Ch[N_];
int D1[N_], D2[N_], P1[N_], par[N_][20], Dep[N_];
struct Range {
	int b, e;
	bool operator<(const Range &p)const {
		return b < p.b;
	}
};
vector<Range>G[N_];
void DFS1(int a, int pp) {
	Num[a] = ++cnt;
	par[a][0] = pp;
	for (int i = 0; i < 18; i++)par[a][i + 1] = par[par[a][i]][i];
	P1[a] = a;
	for (auto &x : E[a]) {
		if (x == pp)continue;
		Dep[x] = Dep[a] + 1;
		DFS1(x, a);
		Ch[a].push_back(x);
		D2[a] = max(D2[a], D1[a] + D1[x] + 1);
		D2[a] = max(D2[a], D2[x]);
		if (D1[a] < D1[x] + 1) {
			D1[a] = D1[x] + 1;
			P1[a] = P1[x];
		}
	}
	Ed[a] = cnt;
}
int Up(int a, int d) {
	int i = 0;
	while (d) {
		if (d & 1)a = par[a][i];
		d >>= 1, i++;
	}
	return a;
}
int LCA(int a, int b) {
	if (Dep[a] < Dep[b])return LCA(b, a);
	a = Up(a, Dep[a] - Dep[b]);
	for (int i = 18; i >= 0; i--) {
		if (par[a][i] != par[b][i])a = par[a][i], b = par[b][i];
	}
	if (a != b)a = par[a][0];
	return a;
}
void Put(int col, int b, int e) {
	if (b > e)return;
	G[col].push_back({ b,e });
}
void Add(int a, int x) {
	int l = LCA(a, x);
	int d = Dep[a] + Dep[x] - Dep[l] * 2;
	if (Dep[a] <= Dep[x]) {
		int t = Up(x, (d - 1) / 2);
		Put(Col[a], Num[t], Ed[t]);
	}
	else {
		int t = Up(a, d / 2);
		Put(Col[a], Num[1], Num[t] - 1);
		Put(Col[a], Ed[t] + 1, Ed[1]);
	}
}
void DFS2(int a, int pp, int d1, int d2, int p1) {
	if (pp) {
		if (d1 > d2) {
			Add(a, p1);
		}
	}
	int dd2[2][2] = { {-3,0},{-3,0} }, dd1[3][2] = { {0,a},{-3,0},{ -3,0 } }, i;
	for (auto &x : Ch[a]) {
		if (D2[x] < D1[x] + 1) {
			Add(a, P1[x]);
		}
		if (dd2[0][0] < D2[x]) {
			dd2[1][0] = dd2[0][0], dd2[1][1] = dd2[0][1];
			dd2[0][0] = D2[x], dd2[0][1] = x;
		}
		else if (dd2[1][0] < D2[x]) {
			dd2[1][0] = D2[x], dd2[1][1] = x;
		}
		if (dd1[0][0] < D1[x] + 1) {
			dd1[2][0] = dd1[1][0], dd1[2][1] = dd1[1][1];
			dd1[1][0] = dd1[0][0], dd1[1][1] = dd1[0][1];
			dd1[0][0] = D1[x] + 1, dd1[0][1] = x;
		}
		else if (dd1[1][0] < D1[x] + 1) {
			dd1[2][0] = dd1[1][0], dd1[2][1] = dd1[1][1];
			dd1[1][0] = D1[x] + 1, dd1[1][1] = x;
		}
		else if (dd1[2][0] < D1[x] + 1) {
			dd1[2][0] = D1[x] + 1, dd1[2][1] = x;
		}
	}
	for (auto &x : Ch[a]) {
		int nd2 = d2, nd1 = d1 + 1, np1 = p1;
		if (x == dd2[0][1]) nd2 = max(nd2, dd2[1][0]);
		else nd2 = max(nd2, dd2[0][0]);
		int ck = 0;
		if (x == dd1[0][1])ck = 1;
		if (nd1 < dd1[ck][0] + 1) {
			nd1 = dd1[ck][0] + 1;
			np1 = P1[dd1[ck][1]];
		}
		nd2 = max(nd2, dd1[ck][0] + d1);
		if (x == dd1[0][1])nd2 = max(nd2, dd1[1][0] + dd1[2][0]);
		else if (x == dd1[1][1])nd2 = max(nd2, dd1[0][0] + dd1[2][0]);
		else nd2 = max(nd2, dd1[0][0] + dd1[1][0]);
		DFS2(x, a, nd1, nd2, np1);
	}
}
void Go(vector<Range> &T) {
	sort(T.begin(), T.end());
	int b = -1, e = -1;
	for (auto &t : T) {
		if (e < t.b) {
			if (e != -1) {
				S[b]++;
				S[e + 1]--;
			}
			b = t.b;
		}
		e = max(e, t.e);
	}
	if (e != -1) {
		S[b]++, S[e + 1]--;
	}
}
int main() {
	scanf("%d%d", &n, &m);
	int i, a, b, j;
	for (i = 1; i < n; i++) {
		scanf("%d%d", &a, &b);
		E[a].push_back(b);
		E[b].push_back(a);
	}
	for (i = 1; i <= n; i++) {
		scanf("%d", &Col[i]);
	}
	DFS1(1, 0);
	DFS2(1, 0, 0, 0, 1);
	for (i = 1; i <= m; i++) {
		Go(G[i]);
	}
	for (i = 1; i <= n; i++)S[i] += S[i - 1];
	for (i = 1; i <= n; i++) {
		printf("%d\n", S[Num[i]]);
	}
}

Compilation message

joi2019_ho_t5.cpp: In function 'void DFS2(int, int, int, int, int)':
joi2019_ho_t5.cpp:75:76: warning: unused variable 'i' [-Wunused-variable]
  int dd2[2][2] = { {-3,0},{-3,0} }, dd1[3][2] = { {0,a},{-3,0},{ -3,0 } }, i;
                                                                            ^
joi2019_ho_t5.cpp: In function 'int main()':
joi2019_ho_t5.cpp:136:15: warning: unused variable 'j' [-Wunused-variable]
  int i, a, b, j;
               ^
joi2019_ho_t5.cpp:135:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~
joi2019_ho_t5.cpp:138:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~
joi2019_ho_t5.cpp:143:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &Col[i]);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 14572 KB Output is correct
2 Correct 18 ms 14840 KB Output is correct
3 Correct 21 ms 14840 KB Output is correct
4 Correct 18 ms 14948 KB Output is correct
5 Correct 18 ms 14848 KB Output is correct
6 Correct 19 ms 15144 KB Output is correct
7 Correct 17 ms 14976 KB Output is correct
8 Correct 16 ms 14820 KB Output is correct
9 Correct 19 ms 14892 KB Output is correct
10 Correct 19 ms 14848 KB Output is correct
11 Correct 16 ms 14820 KB Output is correct
12 Correct 16 ms 14848 KB Output is correct
13 Correct 20 ms 14976 KB Output is correct
14 Correct 20 ms 14976 KB Output is correct
15 Correct 22 ms 14952 KB Output is correct
16 Correct 18 ms 14820 KB Output is correct
17 Correct 19 ms 15232 KB Output is correct
18 Correct 20 ms 14976 KB Output is correct
19 Correct 17 ms 14840 KB Output is correct
20 Correct 18 ms 15096 KB Output is correct
21 Correct 21 ms 14976 KB Output is correct
22 Correct 17 ms 14888 KB Output is correct
23 Correct 20 ms 14848 KB Output is correct
24 Correct 19 ms 14840 KB Output is correct
25 Correct 17 ms 14848 KB Output is correct
26 Correct 19 ms 14848 KB Output is correct
27 Correct 22 ms 15116 KB Output is correct
28 Correct 23 ms 15088 KB Output is correct
29 Correct 21 ms 14912 KB Output is correct
30 Correct 19 ms 14820 KB Output is correct
31 Correct 18 ms 14976 KB Output is correct
32 Correct 18 ms 14976 KB Output is correct

Subtask #2
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 285 ms 33984 KB Output is correct
2 Correct 565 ms 52472 KB Output is correct
3 Correct 77 ms 21624 KB Output is correct
4 Correct 649 ms 51144 KB Output is correct
5 Correct 1167 ms 70344 KB Output is correct
6 Correct 795 ms 65660 KB Output is correct
7 Correct 549 ms 51176 KB Output is correct
8 Correct 664 ms 53068 KB Output is correct
9 Correct 573 ms 52984 KB Output is correct
10 Correct 533 ms 52968 KB Output is correct
11 Correct 373 ms 49640 KB Output is correct
12 Correct 778 ms 70632 KB Output is correct
13 Correct 717 ms 60052 KB Output is correct
14 Correct 650 ms 62340 KB Output is correct
15 Correct 414 ms 47568 KB Output is correct
16 Correct 864 ms 63820 KB Output is correct
17 Correct 674 ms 62088 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 386 ms 42744 KB Output is correct
2 Correct 1164 ms 74616 KB Output is correct
3 Correct 101 ms 23388 KB Output is correct
4 Correct 572 ms 54024 KB Output is correct
5 Correct 1302 ms 76200 KB Output is correct
6 Correct 871 ms 65400 KB Output is correct
7 Correct 747 ms 53940 KB Output is correct
8 Correct 784 ms 57596 KB Output is correct
9 Correct 660 ms 56628 KB Output is correct
10 Correct 734 ms 55800 KB Output is correct
11 Correct 565 ms 53224 KB Output is correct
12 Correct 1076 ms 70264 KB Output is correct
13 Correct 764 ms 61168 KB Output is correct
14 Correct 660 ms 65392 KB Output is correct
15 Correct 412 ms 48828 KB Output is correct
16 Correct 933 ms 66316 KB Output is correct
17 Correct 777 ms 64372 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 14572 KB Output is correct
2 Correct 18 ms 14840 KB Output is correct
3 Correct 21 ms 14840 KB Output is correct
4 Correct 18 ms 14948 KB Output is correct
5 Correct 18 ms 14848 KB Output is correct
6 Correct 19 ms 15144 KB Output is correct
7 Correct 17 ms 14976 KB Output is correct
8 Correct 16 ms 14820 KB Output is correct
9 Correct 19 ms 14892 KB Output is correct
10 Correct 19 ms 14848 KB Output is correct
11 Correct 16 ms 14820 KB Output is correct
12 Correct 16 ms 14848 KB Output is correct
13 Correct 20 ms 14976 KB Output is correct
14 Correct 20 ms 14976 KB Output is correct
15 Correct 22 ms 14952 KB Output is correct
16 Correct 18 ms 14820 KB Output is correct
17 Correct 19 ms 15232 KB Output is correct
18 Correct 20 ms 14976 KB Output is correct
19 Correct 17 ms 14840 KB Output is correct
20 Correct 18 ms 15096 KB Output is correct
21 Correct 21 ms 14976 KB Output is correct
22 Correct 17 ms 14888 KB Output is correct
23 Correct 20 ms 14848 KB Output is correct
24 Correct 19 ms 14840 KB Output is correct
25 Correct 17 ms 14848 KB Output is correct
26 Correct 19 ms 14848 KB Output is correct
27 Correct 22 ms 15116 KB Output is correct
28 Correct 23 ms 15088 KB Output is correct
29 Correct 21 ms 14912 KB Output is correct
30 Correct 19 ms 14820 KB Output is correct
31 Correct 18 ms 14976 KB Output is correct
32 Correct 18 ms 14976 KB Output is correct
33 Correct 285 ms 33984 KB Output is correct
34 Correct 565 ms 52472 KB Output is correct
35 Correct 77 ms 21624 KB Output is correct
36 Correct 649 ms 51144 KB Output is correct
37 Correct 1167 ms 70344 KB Output is correct
38 Correct 795 ms 65660 KB Output is correct
39 Correct 549 ms 51176 KB Output is correct
40 Correct 664 ms 53068 KB Output is correct
41 Correct 573 ms 52984 KB Output is correct
42 Correct 533 ms 52968 KB Output is correct
43 Correct 373 ms 49640 KB Output is correct
44 Correct 778 ms 70632 KB Output is correct
45 Correct 717 ms 60052 KB Output is correct
46 Correct 650 ms 62340 KB Output is correct
47 Correct 414 ms 47568 KB Output is correct
48 Correct 864 ms 63820 KB Output is correct
49 Correct 674 ms 62088 KB Output is correct
50 Correct 386 ms 42744 KB Output is correct
51 Correct 1164 ms 74616 KB Output is correct
52 Correct 101 ms 23388 KB Output is correct
53 Correct 572 ms 54024 KB Output is correct
54 Correct 1302 ms 76200 KB Output is correct
55 Correct 871 ms 65400 KB Output is correct
56 Correct 747 ms 53940 KB Output is correct
57 Correct 784 ms 57596 KB Output is correct
58 Correct 660 ms 56628 KB Output is correct
59 Correct 734 ms 55800 KB Output is correct
60 Correct 565 ms 53224 KB Output is correct
61 Correct 1076 ms 70264 KB Output is correct
62 Correct 764 ms 61168 KB Output is correct
63 Correct 660 ms 65392 KB Output is correct
64 Correct 412 ms 48828 KB Output is correct
65 Correct 933 ms 66316 KB Output is correct
66 Correct 777 ms 64372 KB Output is correct
67 Correct 80 ms 19648 KB Output is correct
68 Correct 467 ms 46960 KB Output is correct
69 Correct 473 ms 44152 KB Output is correct
70 Correct 581 ms 51392 KB Output is correct
71 Correct 1121 ms 74072 KB Output is correct
72 Correct 686 ms 64724 KB Output is correct
73 Correct 552 ms 51336 KB Output is correct
74 Correct 587 ms 56676 KB Output is correct
75 Correct 568 ms 53040 KB Output is correct
76 Correct 533 ms 52472 KB Output is correct
77 Correct 492 ms 50808 KB Output is correct
78 Correct 948 ms 65028 KB Output is correct
79 Correct 800 ms 67688 KB Output is correct
80 Correct 652 ms 63232 KB Output is correct
81 Correct 438 ms 47440 KB Output is correct
82 Correct 818 ms 73036 KB Output is correct
83 Correct 707 ms 62020 KB Output is correct
84 Correct 702 ms 51544 KB Output is correct
85 Correct 1127 ms 80140 KB Output is correct
86 Correct 864 ms 64000 KB Output is correct
87 Correct 657 ms 51692 KB Output is correct
88 Correct 732 ms 56964 KB Output is correct
89 Correct 699 ms 54576 KB Output is correct
90 Correct 601 ms 53748 KB Output is correct
91 Correct 590 ms 51564 KB Output is correct
92 Correct 1094 ms 79816 KB Output is correct
93 Correct 741 ms 60404 KB Output is correct
94 Correct 611 ms 55900 KB Output is correct
95 Correct 418 ms 48044 KB Output is correct
96 Correct 918 ms 63972 KB Output is correct
97 Correct 736 ms 61928 KB Output is correct
98 Correct 608 ms 53508 KB Output is correct
99 Correct 1145 ms 83716 KB Output is correct
100 Correct 811 ms 65844 KB Output is correct
101 Correct 597 ms 52500 KB Output is correct
102 Correct 666 ms 56316 KB Output is correct
103 Correct 654 ms 55496 KB Output is correct
104 Correct 595 ms 53868 KB Output is correct
105 Correct 513 ms 51688 KB Output is correct
106 Correct 784 ms 69688 KB Output is correct
107 Correct 878 ms 64836 KB Output is correct
108 Correct 729 ms 59656 KB Output is correct
109 Correct 444 ms 48564 KB Output is correct
110 Correct 949 ms 65412 KB Output is correct
111 Correct 709 ms 63344 KB Output is correct