#include <bits/stdc++.h>
using namespace std;
const int N = 200001;
vector<int> g[N], stk;
int c[N], cnt[N], cnt_unique = 0, ans[N], depth[N], dp[N], diam;
void pop() {
int x = stk.back();
stk.pop_back();
if (--cnt[c[x]] == 0) {
cnt_unique -= 1;
}
}
void push(int x) {
stk.push_back(x);
if (++cnt[c[x]] == 1) {
cnt_unique += 1;
}
}
void dfs1(int v, int p) {
dp[v] = depth[v] = depth[p] + 1;
if (dp[v] > dp[diam]) {
diam = v;
}
for (int to: g[v]) {
if (to != p) {
dfs1(to, v);
dp[v] = max(dp[v], dp[to]);
}
}
}
void dfs(int v, int p) {
if (p != 0) {
push(p);
}
for (int t = 0; t < 2; ++t) {
for (int i = t; i < g[v].size(); ++i) {
if (g[v][i] != p && (g[v][t] == p || dp[g[v][i]] > dp[g[v][t]])) {
swap(g[v][t], g[v][i]);
}
}
}
int mx1 = g[v][0], mx2 = g[v].size() == 1 || g[v][1] == p ? 0 : g[v][1];
for (int to: g[v]) {
if (to != p) {
int len = (to == mx1 ? dp[mx2] : dp[mx1]) - depth[v];
while (!stk.empty() && depth[v] - depth[stk.back()] <= len) {
pop();
}
dfs(to, v);
}
}
while (!stk.empty() && dp[v] - depth[v] >= depth[v] - depth[stk.back()]) {
pop();
}
ans[v] = max(ans[v], cnt_unique);
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
for (int i = 1; i < n; ++i) {
int x, y;
cin >> x >> y;
g[x].push_back(y);
g[y].push_back(x);
}
for (int i = 1; i <= n; ++i) {
cin >> c[i];
}
dfs1(diam = 1, 0);
for (int t = 0, x; t < 2; ++t) {
//t == 0 ? go from one end : from another
dfs1(x = diam, 0);
dfs(x, 0);
}
for (int i = 1; i <= n; ++i) {
cout << ans[i] << "\n";
}
return 0;
}
Compilation message
joi2019_ho_t5.cpp: In function 'void dfs(int, int)':
joi2019_ho_t5.cpp:44:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | for (int i = t; i < g[v].size(); ++i) {
| ~~^~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4948 KB |
Output is correct |
2 |
Correct |
4 ms |
5076 KB |
Output is correct |
3 |
Correct |
3 ms |
5204 KB |
Output is correct |
4 |
Correct |
4 ms |
5176 KB |
Output is correct |
5 |
Correct |
5 ms |
5076 KB |
Output is correct |
6 |
Correct |
4 ms |
5332 KB |
Output is correct |
7 |
Correct |
6 ms |
5204 KB |
Output is correct |
8 |
Correct |
5 ms |
5076 KB |
Output is correct |
9 |
Correct |
5 ms |
5076 KB |
Output is correct |
10 |
Correct |
4 ms |
5076 KB |
Output is correct |
11 |
Correct |
4 ms |
5076 KB |
Output is correct |
12 |
Correct |
3 ms |
5076 KB |
Output is correct |
13 |
Correct |
4 ms |
5332 KB |
Output is correct |
14 |
Correct |
4 ms |
5204 KB |
Output is correct |
15 |
Correct |
4 ms |
5228 KB |
Output is correct |
16 |
Correct |
3 ms |
5076 KB |
Output is correct |
17 |
Correct |
4 ms |
5304 KB |
Output is correct |
18 |
Correct |
4 ms |
5204 KB |
Output is correct |
19 |
Correct |
4 ms |
5172 KB |
Output is correct |
20 |
Correct |
4 ms |
5332 KB |
Output is correct |
21 |
Correct |
5 ms |
5176 KB |
Output is correct |
22 |
Correct |
4 ms |
5144 KB |
Output is correct |
23 |
Correct |
5 ms |
5204 KB |
Output is correct |
24 |
Correct |
5 ms |
5192 KB |
Output is correct |
25 |
Correct |
5 ms |
5168 KB |
Output is correct |
26 |
Correct |
4 ms |
5172 KB |
Output is correct |
27 |
Correct |
4 ms |
5296 KB |
Output is correct |
28 |
Correct |
4 ms |
5204 KB |
Output is correct |
29 |
Correct |
4 ms |
5168 KB |
Output is correct |
30 |
Correct |
4 ms |
5076 KB |
Output is correct |
31 |
Correct |
4 ms |
5228 KB |
Output is correct |
32 |
Correct |
4 ms |
5204 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
136 ms |
12256 KB |
Output is correct |
2 |
Correct |
181 ms |
23532 KB |
Output is correct |
3 |
Correct |
22 ms |
8196 KB |
Output is correct |
4 |
Correct |
291 ms |
17212 KB |
Output is correct |
5 |
Correct |
343 ms |
36740 KB |
Output is correct |
6 |
Correct |
298 ms |
26900 KB |
Output is correct |
7 |
Correct |
260 ms |
17220 KB |
Output is correct |
8 |
Correct |
263 ms |
19120 KB |
Output is correct |
9 |
Correct |
286 ms |
18568 KB |
Output is correct |
10 |
Correct |
264 ms |
18380 KB |
Output is correct |
11 |
Correct |
128 ms |
17776 KB |
Output is correct |
12 |
Correct |
318 ms |
29200 KB |
Output is correct |
13 |
Correct |
283 ms |
26720 KB |
Output is correct |
14 |
Correct |
288 ms |
26136 KB |
Output is correct |
15 |
Correct |
117 ms |
17896 KB |
Output is correct |
16 |
Correct |
309 ms |
30484 KB |
Output is correct |
17 |
Correct |
267 ms |
27036 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
232 ms |
15728 KB |
Output is correct |
2 |
Correct |
326 ms |
37064 KB |
Output is correct |
3 |
Correct |
24 ms |
8732 KB |
Output is correct |
4 |
Correct |
300 ms |
18116 KB |
Output is correct |
5 |
Correct |
326 ms |
38424 KB |
Output is correct |
6 |
Correct |
321 ms |
27872 KB |
Output is correct |
7 |
Correct |
254 ms |
18036 KB |
Output is correct |
8 |
Correct |
330 ms |
22028 KB |
Output is correct |
9 |
Correct |
288 ms |
20628 KB |
Output is correct |
10 |
Correct |
308 ms |
19408 KB |
Output is correct |
11 |
Correct |
224 ms |
18236 KB |
Output is correct |
12 |
Correct |
349 ms |
34244 KB |
Output is correct |
13 |
Correct |
308 ms |
26640 KB |
Output is correct |
14 |
Correct |
297 ms |
26760 KB |
Output is correct |
15 |
Correct |
120 ms |
17856 KB |
Output is correct |
16 |
Correct |
292 ms |
31812 KB |
Output is correct |
17 |
Correct |
295 ms |
28296 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
2 ms |
4948 KB |
Output is correct |
2 |
Correct |
4 ms |
5076 KB |
Output is correct |
3 |
Correct |
3 ms |
5204 KB |
Output is correct |
4 |
Correct |
4 ms |
5176 KB |
Output is correct |
5 |
Correct |
5 ms |
5076 KB |
Output is correct |
6 |
Correct |
4 ms |
5332 KB |
Output is correct |
7 |
Correct |
6 ms |
5204 KB |
Output is correct |
8 |
Correct |
5 ms |
5076 KB |
Output is correct |
9 |
Correct |
5 ms |
5076 KB |
Output is correct |
10 |
Correct |
4 ms |
5076 KB |
Output is correct |
11 |
Correct |
4 ms |
5076 KB |
Output is correct |
12 |
Correct |
3 ms |
5076 KB |
Output is correct |
13 |
Correct |
4 ms |
5332 KB |
Output is correct |
14 |
Correct |
4 ms |
5204 KB |
Output is correct |
15 |
Correct |
4 ms |
5228 KB |
Output is correct |
16 |
Correct |
3 ms |
5076 KB |
Output is correct |
17 |
Correct |
4 ms |
5304 KB |
Output is correct |
18 |
Correct |
4 ms |
5204 KB |
Output is correct |
19 |
Correct |
4 ms |
5172 KB |
Output is correct |
20 |
Correct |
4 ms |
5332 KB |
Output is correct |
21 |
Correct |
5 ms |
5176 KB |
Output is correct |
22 |
Correct |
4 ms |
5144 KB |
Output is correct |
23 |
Correct |
5 ms |
5204 KB |
Output is correct |
24 |
Correct |
5 ms |
5192 KB |
Output is correct |
25 |
Correct |
5 ms |
5168 KB |
Output is correct |
26 |
Correct |
4 ms |
5172 KB |
Output is correct |
27 |
Correct |
4 ms |
5296 KB |
Output is correct |
28 |
Correct |
4 ms |
5204 KB |
Output is correct |
29 |
Correct |
4 ms |
5168 KB |
Output is correct |
30 |
Correct |
4 ms |
5076 KB |
Output is correct |
31 |
Correct |
4 ms |
5228 KB |
Output is correct |
32 |
Correct |
4 ms |
5204 KB |
Output is correct |
33 |
Correct |
136 ms |
12256 KB |
Output is correct |
34 |
Correct |
181 ms |
23532 KB |
Output is correct |
35 |
Correct |
22 ms |
8196 KB |
Output is correct |
36 |
Correct |
291 ms |
17212 KB |
Output is correct |
37 |
Correct |
343 ms |
36740 KB |
Output is correct |
38 |
Correct |
298 ms |
26900 KB |
Output is correct |
39 |
Correct |
260 ms |
17220 KB |
Output is correct |
40 |
Correct |
263 ms |
19120 KB |
Output is correct |
41 |
Correct |
286 ms |
18568 KB |
Output is correct |
42 |
Correct |
264 ms |
18380 KB |
Output is correct |
43 |
Correct |
128 ms |
17776 KB |
Output is correct |
44 |
Correct |
318 ms |
29200 KB |
Output is correct |
45 |
Correct |
283 ms |
26720 KB |
Output is correct |
46 |
Correct |
288 ms |
26136 KB |
Output is correct |
47 |
Correct |
117 ms |
17896 KB |
Output is correct |
48 |
Correct |
309 ms |
30484 KB |
Output is correct |
49 |
Correct |
267 ms |
27036 KB |
Output is correct |
50 |
Correct |
232 ms |
15728 KB |
Output is correct |
51 |
Correct |
326 ms |
37064 KB |
Output is correct |
52 |
Correct |
24 ms |
8732 KB |
Output is correct |
53 |
Correct |
300 ms |
18116 KB |
Output is correct |
54 |
Correct |
326 ms |
38424 KB |
Output is correct |
55 |
Correct |
321 ms |
27872 KB |
Output is correct |
56 |
Correct |
254 ms |
18036 KB |
Output is correct |
57 |
Correct |
330 ms |
22028 KB |
Output is correct |
58 |
Correct |
288 ms |
20628 KB |
Output is correct |
59 |
Correct |
308 ms |
19408 KB |
Output is correct |
60 |
Correct |
224 ms |
18236 KB |
Output is correct |
61 |
Correct |
349 ms |
34244 KB |
Output is correct |
62 |
Correct |
308 ms |
26640 KB |
Output is correct |
63 |
Correct |
297 ms |
26760 KB |
Output is correct |
64 |
Correct |
120 ms |
17856 KB |
Output is correct |
65 |
Correct |
292 ms |
31812 KB |
Output is correct |
66 |
Correct |
295 ms |
28296 KB |
Output is correct |
67 |
Correct |
23 ms |
6920 KB |
Output is correct |
68 |
Correct |
109 ms |
19740 KB |
Output is correct |
69 |
Correct |
195 ms |
19540 KB |
Output is correct |
70 |
Correct |
255 ms |
17328 KB |
Output is correct |
71 |
Correct |
322 ms |
36812 KB |
Output is correct |
72 |
Correct |
333 ms |
26888 KB |
Output is correct |
73 |
Correct |
237 ms |
17220 KB |
Output is correct |
74 |
Correct |
346 ms |
20928 KB |
Output is correct |
75 |
Correct |
265 ms |
18836 KB |
Output is correct |
76 |
Correct |
291 ms |
18596 KB |
Output is correct |
77 |
Correct |
190 ms |
17556 KB |
Output is correct |
78 |
Correct |
321 ms |
31376 KB |
Output is correct |
79 |
Correct |
311 ms |
29316 KB |
Output is correct |
80 |
Correct |
266 ms |
25008 KB |
Output is correct |
81 |
Correct |
123 ms |
17900 KB |
Output is correct |
82 |
Correct |
286 ms |
30544 KB |
Output is correct |
83 |
Correct |
263 ms |
27080 KB |
Output is correct |
84 |
Correct |
284 ms |
17324 KB |
Output is correct |
85 |
Correct |
322 ms |
37180 KB |
Output is correct |
86 |
Correct |
337 ms |
27048 KB |
Output is correct |
87 |
Correct |
267 ms |
17228 KB |
Output is correct |
88 |
Correct |
287 ms |
21332 KB |
Output is correct |
89 |
Correct |
284 ms |
19232 KB |
Output is correct |
90 |
Correct |
297 ms |
18852 KB |
Output is correct |
91 |
Correct |
201 ms |
17512 KB |
Output is correct |
92 |
Correct |
334 ms |
36412 KB |
Output is correct |
93 |
Correct |
290 ms |
24064 KB |
Output is correct |
94 |
Correct |
285 ms |
22220 KB |
Output is correct |
95 |
Correct |
124 ms |
17788 KB |
Output is correct |
96 |
Correct |
279 ms |
30800 KB |
Output is correct |
97 |
Correct |
319 ms |
27300 KB |
Output is correct |
98 |
Correct |
288 ms |
17956 KB |
Output is correct |
99 |
Correct |
344 ms |
37320 KB |
Output is correct |
100 |
Correct |
324 ms |
27624 KB |
Output is correct |
101 |
Correct |
245 ms |
17512 KB |
Output is correct |
102 |
Correct |
274 ms |
20652 KB |
Output is correct |
103 |
Correct |
321 ms |
19292 KB |
Output is correct |
104 |
Correct |
265 ms |
18912 KB |
Output is correct |
105 |
Correct |
226 ms |
17660 KB |
Output is correct |
106 |
Correct |
341 ms |
28916 KB |
Output is correct |
107 |
Correct |
298 ms |
29252 KB |
Output is correct |
108 |
Correct |
277 ms |
23924 KB |
Output is correct |
109 |
Correct |
132 ms |
17896 KB |
Output is correct |
110 |
Correct |
273 ms |
31168 KB |
Output is correct |
111 |
Correct |
304 ms |
27568 KB |
Output is correct |