oj.uz

Submission #942420

# Submission time Handle Problem Language Result Execution time Memory
942420 2024-03-10T15:55:15 Z groshi Capital City (JOI20_capital_city) C++17
100 / 100
 401 ms 47952 KB 
#include<bits/stdc++.h>
#define int long long
using namespace std;
struct wi{
    vector<int> Q;
    int wiel=0;
    int kto=0;
    int ojc;
}*w;
vector<int> lista[300000];
int wynik=1e9;
int byl[300000];
int odw[300000];
int kolor[300000];
int licz_wiel(int x,int ojc=-1)
{
	w[x].wiel=1;
	for(int child:w[x].Q)
	{
		if(child==ojc || byl[child])
            continue;
		w[x].wiel+=licz_wiel(child,x);
	}
	return w[x].wiel;
}
int licz_centr(int x,int wiel,int ojc=-1)
{
	for(int child:w[x].Q)
	{
		if(child==ojc || byl[child])
            continue;
		if(w[child].wiel*2>wiel)
			return licz_centr(child,wiel,x);
	}
	return x;
}
void dfs(int x,int ojc,int kto)
{
    w[x].kto=kto;
    w[x].ojc=ojc;
    for(int i:w[x].Q)
    {
        if(i==ojc || byl[i])
            continue;
        dfs(i,x,kto);
    }
}
void centroid(int x)
{
	int c=licz_centr(x,licz_wiel(x));
	byl[c]=1;
	dfs(c,c,c);
	queue<int> kolejka;
	kolejka.push(kolor[c]);
	int wynikk=0;
	while(!kolejka.empty())
	{
        int y=kolejka.front();
        kolejka.pop();
        if(odw[y]==c)
            continue;
        odw[y]=c;
        for(int i=0;i<lista[y].size();i++)
        {
            int pom=lista[y][i];
            if(w[pom].kto!=c)
            {
                wynikk=1e9;
                break;
            }
            kolejka.push(kolor[w[pom].ojc]);
        }
        wynikk++;
	}
	wynik=min(wynik,wynikk);
	for(int child:w[c].Q)
		if(byl[child]==0)
            centroid(child);
}
int32_t main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int n,k,x,y;
    cin>>n>>k;
    w=new wi[n+3];
    for(int i=1;i<n;i++)
    {
        cin>>x>>y;
        w[x].Q.push_back(y);
        w[y].Q.push_back(x);
    }
    for(int i=1;i<=n;i++)
    {
        int c;
        cin>>c;
        kolor[i]=c;
        lista[c].push_back(i);
    }
    centroid(1);
    cout<<wynik-1;
    return 0;
}

Compilation message

capital_city.cpp: In function 'void centroid(long long int)':
capital_city.cpp:63:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         for(int i=0;i<lista[y].size();i++)
      |                     ~^~~~~~~~~~~~~~~~

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 ms 8120 KB Output is correct
4 Correct 2 ms 8024 KB Output is correct
5 Correct 3 ms 8028 KB Output is correct
6 Correct 3 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8124 KB Output is correct
9 Correct 2 ms 8024 KB Output is correct
10 Correct 2 ms 10076 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 ms 8120 KB Output is correct
4 Correct 2 ms 8024 KB Output is correct
5 Correct 3 ms 8028 KB Output is correct
6 Correct 3 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8124 KB Output is correct
9 Correct 2 ms 8024 KB Output is correct
10 Correct 2 ms 10076 KB Output is correct
11 Correct 3 ms 8280 KB Output is correct
12 Correct 3 ms 8284 KB Output is correct
13 Correct 3 ms 8508 KB Output is correct
14 Correct 3 ms 8284 KB Output is correct
15 Correct 3 ms 8536 KB Output is correct
16 Correct 3 ms 8284 KB Output is correct
17 Correct 3 ms 8540 KB Output is correct
18 Correct 3 ms 8540 KB Output is correct
19 Correct 3 ms 8368 KB Output is correct
20 Correct 3 ms 8536 KB Output is correct
21 Correct 3 ms 8540 KB Output is correct
22 Correct 3 ms 8540 KB Output is correct
23 Correct 3 ms 8536 KB Output is correct
24 Correct 5 ms 8548 KB Output is correct
25 Correct 5 ms 8540 KB Output is correct
26 Correct 4 ms 8376 KB Output is correct
27 Correct 4 ms 8536 KB Output is correct
28 Correct 4 ms 8540 KB Output is correct
29 Correct 4 ms 8352 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 304 ms 47292 KB Output is correct
2 Correct 142 ms 47672 KB Output is correct
3 Correct 318 ms 46936 KB Output is correct
4 Correct 149 ms 47584 KB Output is correct
5 Correct 322 ms 44716 KB Output is correct
6 Correct 149 ms 47760 KB Output is correct
7 Correct 367 ms 45028 KB Output is correct
8 Correct 137 ms 47508 KB Output is correct
9 Correct 351 ms 43604 KB Output is correct
10 Correct 370 ms 41796 KB Output is correct
11 Correct 315 ms 44140 KB Output is correct
12 Correct 397 ms 46444 KB Output is correct
13 Correct 339 ms 41236 KB Output is correct
14 Correct 360 ms 46364 KB Output is correct
15 Correct 367 ms 46092 KB Output is correct
16 Correct 321 ms 42216 KB Output is correct
17 Correct 377 ms 42624 KB Output is correct
18 Correct 358 ms 42844 KB Output is correct
19 Correct 355 ms 45172 KB Output is correct
20 Correct 357 ms 46892 KB Output is correct
21 Correct 2 ms 10324 KB Output is correct

Subtask #4
59.0 / 59.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8028 KB Output is correct
3 Correct 2 ms 8120 KB Output is correct
4 Correct 2 ms 8024 KB Output is correct
5 Correct 3 ms 8028 KB Output is correct
6 Correct 3 ms 8028 KB Output is correct
7 Correct 2 ms 8028 KB Output is correct
8 Correct 2 ms 8124 KB Output is correct
9 Correct 2 ms 8024 KB Output is correct
10 Correct 2 ms 10076 KB Output is correct
11 Correct 3 ms 8280 KB Output is correct
12 Correct 3 ms 8284 KB Output is correct
13 Correct 3 ms 8508 KB Output is correct
14 Correct 3 ms 8284 KB Output is correct
15 Correct 3 ms 8536 KB Output is correct
16 Correct 3 ms 8284 KB Output is correct
17 Correct 3 ms 8540 KB Output is correct
18 Correct 3 ms 8540 KB Output is correct
19 Correct 3 ms 8368 KB Output is correct
20 Correct 3 ms 8536 KB Output is correct
21 Correct 3 ms 8540 KB Output is correct
22 Correct 3 ms 8540 KB Output is correct
23 Correct 3 ms 8536 KB Output is correct
24 Correct 5 ms 8548 KB Output is correct
25 Correct 5 ms 8540 KB Output is correct
26 Correct 4 ms 8376 KB Output is correct
27 Correct 4 ms 8536 KB Output is correct
28 Correct 4 ms 8540 KB Output is correct
29 Correct 4 ms 8352 KB Output is correct
30 Correct 3 ms 8540 KB Output is correct
31 Correct 304 ms 47292 KB Output is correct
32 Correct 142 ms 47672 KB Output is correct
33 Correct 318 ms 46936 KB Output is correct
34 Correct 149 ms 47584 KB Output is correct
35 Correct 322 ms 44716 KB Output is correct
36 Correct 149 ms 47760 KB Output is correct
37 Correct 367 ms 45028 KB Output is correct
38 Correct 137 ms 47508 KB Output is correct
39 Correct 351 ms 43604 KB Output is correct
40 Correct 370 ms 41796 KB Output is correct
41 Correct 315 ms 44140 KB Output is correct
42 Correct 397 ms 46444 KB Output is correct
43 Correct 339 ms 41236 KB Output is correct
44 Correct 360 ms 46364 KB Output is correct
45 Correct 367 ms 46092 KB Output is correct
46 Correct 321 ms 42216 KB Output is correct
47 Correct 377 ms 42624 KB Output is correct
48 Correct 358 ms 42844 KB Output is correct
49 Correct 355 ms 45172 KB Output is correct
50 Correct 357 ms 46892 KB Output is correct
51 Correct 2 ms 10324 KB Output is correct
52 Correct 261 ms 36016 KB Output is correct
53 Correct 272 ms 36232 KB Output is correct
54 Correct 326 ms 36484 KB Output is correct
55 Correct 273 ms 36356 KB Output is correct
56 Correct 294 ms 36004 KB Output is correct
57 Correct 294 ms 36256 KB Output is correct
58 Correct 253 ms 38484 KB Output is correct
59 Correct 209 ms 38884 KB Output is correct
60 Correct 312 ms 37716 KB Output is correct
61 Correct 273 ms 37716 KB Output is correct
62 Correct 140 ms 47640 KB Output is correct
63 Correct 141 ms 47696 KB Output is correct
64 Correct 135 ms 47356 KB Output is correct
65 Correct 154 ms 47952 KB Output is correct
66 Correct 191 ms 41912 KB Output is correct
67 Correct 221 ms 41888 KB Output is correct
68 Correct 206 ms 41880 KB Output is correct
69 Correct 242 ms 41768 KB Output is correct
70 Correct 197 ms 41668 KB Output is correct
71 Correct 223 ms 42044 KB Output is correct
72 Correct 179 ms 41920 KB Output is correct
73 Correct 193 ms 41120 KB Output is correct
74 Correct 211 ms 41924 KB Output is correct
75 Correct 205 ms 41924 KB Output is correct
76 Correct 280 ms 41556 KB Output is correct
77 Correct 262 ms 39872 KB Output is correct
78 Correct 350 ms 42724 KB Output is correct
79 Correct 329 ms 40784 KB Output is correct
80 Correct 401 ms 46732 KB Output is correct
81 Correct 325 ms 43884 KB Output is correct
82 Correct 378 ms 44088 KB Output is correct
83 Correct 363 ms 41044 KB Output is correct
84 Correct 371 ms 45652 KB Output is correct
85 Correct 357 ms 44724 KB Output is correct
86 Correct 350 ms 40852 KB Output is correct
87 Correct 340 ms 42444 KB Output is correct
88 Correct 283 ms 43604 KB Output is correct
89 Correct 301 ms 40652 KB Output is correct
90 Correct 345 ms 40560 KB Output is correct
91 Correct 294 ms 42372 KB Output is correct
92 Correct 310 ms 40980 KB Output is correct
93 Correct 308 ms 41112 KB Output is correct
94 Correct 283 ms 40532 KB Output is correct
95 Correct 299 ms 41788 KB Output is correct
96 Correct 303 ms 40436 KB Output is correct
97 Correct 276 ms 42236 KB Output is correct