oj.uz

Submission #594477

# Submission time Handle Problem Language Result Execution time Memory
594477 2022-07-12T13:45:08 Z qwerasdfzxcl Unique Cities (JOI19_ho_t5) C++14
100 / 100
 490 ms 46580 KB 
#include <bits/stdc++.h>

typedef long long ll;
using namespace std;
vector<int> adj[200200], st;
int n, m, c[200200], d[200200], h[200200], ans[200200], cnt[200200], dist[200200], cur;

void dfs0(int s, int pa = -1){
    if (pa!=-1) d[s] = d[pa] + 1;
    else d[s] = 1;
    h[s] = 1;
    for (auto &v:adj[s]) if (v!=pa){
        dfs0(v, s);
        h[s] = max(h[s], h[v]+1);
    }
}

void _insert(int s){
    if (st.empty() || st.back()!=s){
        st.push_back(s);
        if (!cnt[c[s]]) cur++;
        cnt[c[s]]++;
    }
}

void _pop(int s, int x){
    while(!st.empty() && d[s] - d[st.back()] <= x){
        --cnt[c[st.back()]];
        if (!cnt[c[st.back()]]) cur--;
        st.pop_back();
    }
}

void update(int s){
    if (dist[s] < d[s]){
        dist[s] = d[s];
        ans[s] = cur;
    }
}

void dfs(int s, int pa = -1){
    vector<int> deep; ///max and second max
    for (auto &v:adj[s]) if (v!=pa){
        deep.push_back(v);
        for (int i=(int)deep.size()-1;i;i--){
            if (h[deep[i-1]] >= h[deep[i]]) break;
            swap(deep[i-1], deep[i]);
        }
        if (deep.size()>2) deep.pop_back();
    }

    if (deep.empty()){update(s); return;}
    if (deep.size()==2) _pop(s, h[deep[1]]); ///pop second max

    _insert(s);
    dfs(deep[0], s); ///traverse max first
    _pop(s, h[deep[0]]); ///pop all

    for (auto &v:adj[s]) if (v!=pa && v!=deep[0]){
        _insert(s);
        dfs(v, s);
    }

    _pop(s, 0);
    update(s);
}

int main(){
    scanf("%d %d", &n, &m);
    for (int i=1;i<=n-1;i++){
        int x, y;
        scanf("%d %d", &x, &y);
        adj[x].push_back(y);
        adj[y].push_back(x);
    }

    for (int i=1;i<=n;i++) scanf("%d", c+i);

    dfs0(1);
    int r1 = max_element(d+1, d+n+1) - d;
    dfs0(r1);
    dfs(r1);

    /*printf("r1 = %d\n", r1);
    for (int i=1;i<=n;i++) printf("%d\n", ans[i]);*/

    int r2 = max_element(d+1, d+n+1) - d;
    dfs0(r2);
    dfs(r2);

    //printf("r2 = %d\n", r2);
    for (int i=1;i<=n;i++) printf("%d\n", ans[i]);
    return 0;
}

Compilation message

joi2019_ho_t5.cpp: In function 'int main()':
joi2019_ho_t5.cpp:69:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   69 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t5.cpp:72:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~
joi2019_ho_t5.cpp:77:33: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |     for (int i=1;i<=n;i++) scanf("%d", c+i);
      |                            ~~~~~^~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 5076 KB Output is correct
3 Correct 4 ms 5208 KB Output is correct
4 Correct 4 ms 5204 KB Output is correct
5 Correct 7 ms 5148 KB Output is correct
6 Correct 4 ms 5404 KB Output is correct
7 Correct 5 ms 5204 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 5 ms 5076 KB Output is correct
10 Correct 5 ms 5172 KB Output is correct
11 Correct 5 ms 5076 KB Output is correct
12 Correct 3 ms 5148 KB Output is correct
13 Correct 4 ms 5332 KB Output is correct
14 Correct 8 ms 5148 KB Output is correct
15 Correct 7 ms 5204 KB Output is correct
16 Correct 4 ms 5076 KB Output is correct
17 Correct 8 ms 5340 KB Output is correct
18 Correct 5 ms 5204 KB Output is correct
19 Correct 6 ms 5076 KB Output is correct
20 Correct 4 ms 5460 KB Output is correct
21 Correct 5 ms 5268 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 6 ms 5148 KB Output is correct
24 Correct 5 ms 5076 KB Output is correct
25 Correct 6 ms 5092 KB Output is correct
26 Correct 5 ms 5076 KB Output is correct
27 Correct 6 ms 5332 KB Output is correct
28 Correct 5 ms 5332 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 4 ms 5076 KB Output is correct
31 Correct 8 ms 5332 KB Output is correct
32 Correct 4 ms 5204 KB Output is correct

Subtask #2
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 158 ms 11216 KB Output is correct
2 Correct 190 ms 28028 KB Output is correct
3 Correct 29 ms 8728 KB Output is correct
4 Correct 322 ms 16076 KB Output is correct
5 Correct 439 ms 44780 KB Output is correct
6 Correct 435 ms 30044 KB Output is correct
7 Correct 297 ms 16008 KB Output is correct
8 Correct 333 ms 18704 KB Output is correct
9 Correct 305 ms 17884 KB Output is correct
10 Correct 315 ms 17772 KB Output is correct
11 Correct 154 ms 16548 KB Output is correct
12 Correct 404 ms 33704 KB Output is correct
13 Correct 336 ms 29916 KB Output is correct
14 Correct 403 ms 29000 KB Output is correct
15 Correct 124 ms 16516 KB Output is correct
16 Correct 375 ms 35416 KB Output is correct
17 Correct 353 ms 30292 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 247 ms 14076 KB Output is correct
2 Correct 490 ms 44720 KB Output is correct
3 Correct 31 ms 9292 KB Output is correct
4 Correct 328 ms 16868 KB Output is correct
5 Correct 453 ms 46580 KB Output is correct
6 Correct 380 ms 31284 KB Output is correct
7 Correct 332 ms 16892 KB Output is correct
8 Correct 399 ms 22740 KB Output is correct
9 Correct 371 ms 20704 KB Output is correct
10 Correct 353 ms 19068 KB Output is correct
11 Correct 236 ms 17128 KB Output is correct
12 Correct 426 ms 40464 KB Output is correct
13 Correct 339 ms 29356 KB Output is correct
14 Correct 359 ms 29552 KB Output is correct
15 Correct 192 ms 16572 KB Output is correct
16 Correct 331 ms 36716 KB Output is correct
17 Correct 416 ms 31304 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 5076 KB Output is correct
3 Correct 4 ms 5208 KB Output is correct
4 Correct 4 ms 5204 KB Output is correct
5 Correct 7 ms 5148 KB Output is correct
6 Correct 4 ms 5404 KB Output is correct
7 Correct 5 ms 5204 KB Output is correct
8 Correct 4 ms 5076 KB Output is correct
9 Correct 5 ms 5076 KB Output is correct
10 Correct 5 ms 5172 KB Output is correct
11 Correct 5 ms 5076 KB Output is correct
12 Correct 3 ms 5148 KB Output is correct
13 Correct 4 ms 5332 KB Output is correct
14 Correct 8 ms 5148 KB Output is correct
15 Correct 7 ms 5204 KB Output is correct
16 Correct 4 ms 5076 KB Output is correct
17 Correct 8 ms 5340 KB Output is correct
18 Correct 5 ms 5204 KB Output is correct
19 Correct 6 ms 5076 KB Output is correct
20 Correct 4 ms 5460 KB Output is correct
21 Correct 5 ms 5268 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 6 ms 5148 KB Output is correct
24 Correct 5 ms 5076 KB Output is correct
25 Correct 6 ms 5092 KB Output is correct
26 Correct 5 ms 5076 KB Output is correct
27 Correct 6 ms 5332 KB Output is correct
28 Correct 5 ms 5332 KB Output is correct
29 Correct 5 ms 5204 KB Output is correct
30 Correct 4 ms 5076 KB Output is correct
31 Correct 8 ms 5332 KB Output is correct
32 Correct 4 ms 5204 KB Output is correct
33 Correct 158 ms 11216 KB Output is correct
34 Correct 190 ms 28028 KB Output is correct
35 Correct 29 ms 8728 KB Output is correct
36 Correct 322 ms 16076 KB Output is correct
37 Correct 439 ms 44780 KB Output is correct
38 Correct 435 ms 30044 KB Output is correct
39 Correct 297 ms 16008 KB Output is correct
40 Correct 333 ms 18704 KB Output is correct
41 Correct 305 ms 17884 KB Output is correct
42 Correct 315 ms 17772 KB Output is correct
43 Correct 154 ms 16548 KB Output is correct
44 Correct 404 ms 33704 KB Output is correct
45 Correct 336 ms 29916 KB Output is correct
46 Correct 403 ms 29000 KB Output is correct
47 Correct 124 ms 16516 KB Output is correct
48 Correct 375 ms 35416 KB Output is correct
49 Correct 353 ms 30292 KB Output is correct
50 Correct 247 ms 14076 KB Output is correct
51 Correct 490 ms 44720 KB Output is correct
52 Correct 31 ms 9292 KB Output is correct
53 Correct 328 ms 16868 KB Output is correct
54 Correct 453 ms 46580 KB Output is correct
55 Correct 380 ms 31284 KB Output is correct
56 Correct 332 ms 16892 KB Output is correct
57 Correct 399 ms 22740 KB Output is correct
58 Correct 371 ms 20704 KB Output is correct
59 Correct 353 ms 19068 KB Output is correct
60 Correct 236 ms 17128 KB Output is correct
61 Correct 426 ms 40464 KB Output is correct
62 Correct 339 ms 29356 KB Output is correct
63 Correct 359 ms 29552 KB Output is correct
64 Correct 192 ms 16572 KB Output is correct
65 Correct 331 ms 36716 KB Output is correct
66 Correct 416 ms 31304 KB Output is correct
67 Correct 29 ms 6772 KB Output is correct
68 Correct 166 ms 22760 KB Output is correct
69 Correct 228 ms 20904 KB Output is correct
70 Correct 311 ms 15908 KB Output is correct
71 Correct 455 ms 44672 KB Output is correct
72 Correct 366 ms 30024 KB Output is correct
73 Correct 288 ms 15928 KB Output is correct
74 Correct 325 ms 21292 KB Output is correct
75 Correct 313 ms 18428 KB Output is correct
76 Correct 317 ms 18084 KB Output is correct
77 Correct 255 ms 16292 KB Output is correct
78 Correct 373 ms 36784 KB Output is correct
79 Correct 374 ms 33232 KB Output is correct
80 Correct 327 ms 27496 KB Output is correct
81 Correct 129 ms 16504 KB Output is correct
82 Correct 340 ms 35312 KB Output is correct
83 Correct 328 ms 30224 KB Output is correct
84 Correct 316 ms 15964 KB Output is correct
85 Correct 426 ms 45164 KB Output is correct
86 Correct 448 ms 30180 KB Output is correct
87 Correct 296 ms 16088 KB Output is correct
88 Correct 335 ms 21824 KB Output is correct
89 Correct 351 ms 18952 KB Output is correct
90 Correct 301 ms 18244 KB Output is correct
91 Correct 230 ms 16404 KB Output is correct
92 Correct 393 ms 44096 KB Output is correct
93 Correct 309 ms 25672 KB Output is correct
94 Correct 310 ms 23276 KB Output is correct
95 Correct 122 ms 16576 KB Output is correct
96 Correct 317 ms 35776 KB Output is correct
97 Correct 332 ms 30408 KB Output is correct
98 Correct 295 ms 16748 KB Output is correct
99 Correct 398 ms 45304 KB Output is correct
100 Correct 381 ms 31020 KB Output is correct
101 Correct 267 ms 16120 KB Output is correct
102 Correct 321 ms 20856 KB Output is correct
103 Correct 299 ms 18864 KB Output is correct
104 Correct 300 ms 18424 KB Output is correct
105 Correct 208 ms 16364 KB Output is correct
106 Correct 363 ms 32584 KB Output is correct
107 Correct 330 ms 33172 KB Output is correct
108 Correct 329 ms 25464 KB Output is correct
109 Correct 132 ms 16680 KB Output is correct
110 Correct 337 ms 36112 KB Output is correct
111 Correct 331 ms 30996 KB Output is correct