답안 #545524

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
545524	2022-04-04T18:23:20 Z	NaimSS	Mergers (JOI19_mergers)	C++14	100 / 100	919 ms	138516 KB

mergers

#include <bits/stdc++.h>
#define ld long double
#define endl "\n"
#define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pb push_back
#define mp(a,b) make_pair(a,b)
#define ms(v,x) memset(v,x,sizeof(v))
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define per(i, a, b) for(int i = b-1; i>=a ; i--)
#define trav(a, x) for(auto& a : x)
#define allin(a , x) for(auto a : x)
#define Unique(v) sort(all(v));v.erase(unique(all(v)),v.end());
#define sz(v) ((int)v.size())
using namespace std;
typedef vector<int> vi;
#define y1 abacaba
//#define left oooooopss
#define db(x) cerr << #x <<" == "<<x << endl;
#define db2(x,y) cerr<<#x <<" == "<<x<<", "<<#y<<" == "<<y<<endl;
#define db3(x,y,z) cerr << #x<<" == "<<x<<", "<<#y<<" == "<<y<<", "<<#z<<" == "<<z<<endl;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<ll> vl;
std::mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
ll cdiv(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up
ll fdiv(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down
inline ll mod(ll n, ll m ){ ll ret = n%m; if(ret < 0) ret += m; return ret; }
ll gcd(ll a, ll b){return (b == 0LL ? a : gcd(b, a%b));}
ll exp(ll b,ll e,ll m){
  b%=m;
  ll ans = 1;
  for (; e; b = b * b % m, e /= 2)
      if (e & 1) ans = ans * b % m;
  return ans;
}
  
// debug:
void dbg_out() { cerr << endl; }
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T){ 
  cerr << ' ' << H; 
  dbg_out(T...); 
}
#ifdef LOCAL
#define dbg(...) cerr<<"(" << #__VA_ARGS__<<"):" , dbg_out(__VA_ARGS__) , cerr << endl
#else
#define dbg(...) 42
#endif
//

const int N = 500100;
vi g[N];
int S[N];
int p[N];
int cnt[N];
int f(int x){return p[x] = (p[x]==x?x:f(p[x]));}
void join(int a,int b){
	p[f(a)]=f(b);
}

pii e[N];

void dfs(int v,int p,map<int,int>&mp){
	if(cnt[S[v]]!=1)
		mp[S[v]] = 1;
	for(auto to : g[v])if(to!=p){
		map<int,int> nv;
		dfs(to,v,nv);
		if(sz(nv) > sz(mp))mp.swap(nv);

		for(auto it : nv){
			mp[it.ff]+=it.ss;
			if(mp[it.ff] == cnt[it.ff]){
				// todo mundo na subarvore. Cor n importa mais
				mp.erase(it.ff);
			}
		}
	}
	if(mp.size()!=0 && p!=-1){
		// alguem não ta dentro.
		// pode juntar com o pai
		join(v,p);
	}
}
int deg[N];
int32_t main(){
    fastio;
	int n,k;
	cin >> n >> k;
	rep(i,0,n-1){
		int a,b;
		cin >> a >> b;
		g[a].pb(b);
		g[b].pb(a);
		e[i] = pii(a,b);
	}
	rep(i,1,n+1)p[i]=i;
	rep(i,1,n+1)cin >> S[i],cnt[S[i]]++;
	map<int,int> mp;
	dfs(1,0,mp);
	rep(i,0,n-1){
		if(f(e[i].ff)!=f(e[i].ss)){
			deg[f(e[i].ff)]++;
			deg[f(e[i].ss)]++;
		}
	}
	int res=0;
	set<int> used;
	rep(i,1,n+1)used.insert(f(i));

	for(int i : used)
		if(deg[i]<=1)res++;
	
	if(res<=1)res=0;
	cout << (res + 1)/2 << endl;


    // math -> gcd it all
    // Did u check N=1? Did you switch N,M?
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	11988 KB	Output is correct
2	Correct	7 ms	12116 KB	Output is correct
3	Correct	7 ms	12076 KB	Output is correct
4	Correct	7 ms	12080 KB	Output is correct
5	Correct	7 ms	12116 KB	Output is correct
6	Correct	7 ms	12080 KB	Output is correct
7	Correct	7 ms	12076 KB	Output is correct
8	Correct	7 ms	12116 KB	Output is correct
9	Correct	6 ms	12088 KB	Output is correct
10	Correct	7 ms	11988 KB	Output is correct
11	Correct	7 ms	12080 KB	Output is correct
12	Correct	7 ms	11988 KB	Output is correct
13	Correct	7 ms	12108 KB	Output is correct
14	Correct	7 ms	12080 KB	Output is correct
15	Correct	7 ms	12068 KB	Output is correct
16	Correct	7 ms	11988 KB	Output is correct
17	Correct	8 ms	12080 KB	Output is correct
18	Correct	9 ms	12116 KB	Output is correct
19	Correct	9 ms	11988 KB	Output is correct
20	Correct	7 ms	11988 KB	Output is correct
21	Correct	7 ms	12116 KB	Output is correct
22	Correct	12 ms	12040 KB	Output is correct
23	Correct	7 ms	12004 KB	Output is correct
24	Correct	7 ms	11988 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	11988 KB	Output is correct
2	Correct	7 ms	12116 KB	Output is correct
3	Correct	7 ms	12076 KB	Output is correct
4	Correct	7 ms	12080 KB	Output is correct
5	Correct	7 ms	12116 KB	Output is correct
6	Correct	7 ms	12080 KB	Output is correct
7	Correct	7 ms	12076 KB	Output is correct
8	Correct	7 ms	12116 KB	Output is correct
9	Correct	6 ms	12088 KB	Output is correct
10	Correct	7 ms	11988 KB	Output is correct
11	Correct	7 ms	12080 KB	Output is correct
12	Correct	7 ms	11988 KB	Output is correct
13	Correct	7 ms	12108 KB	Output is correct
14	Correct	7 ms	12080 KB	Output is correct
15	Correct	7 ms	12068 KB	Output is correct
16	Correct	7 ms	11988 KB	Output is correct
17	Correct	8 ms	12080 KB	Output is correct
18	Correct	9 ms	12116 KB	Output is correct
19	Correct	9 ms	11988 KB	Output is correct
20	Correct	7 ms	11988 KB	Output is correct
21	Correct	7 ms	12116 KB	Output is correct
22	Correct	12 ms	12040 KB	Output is correct
23	Correct	7 ms	12004 KB	Output is correct
24	Correct	7 ms	11988 KB	Output is correct
25	Correct	7 ms	11988 KB	Output is correct
26	Correct	8 ms	12372 KB	Output is correct
27	Correct	9 ms	12348 KB	Output is correct
28	Correct	9 ms	12604 KB	Output is correct
29	Correct	9 ms	12348 KB	Output is correct
30	Correct	9 ms	12220 KB	Output is correct
31	Correct	7 ms	12076 KB	Output is correct
32	Correct	8 ms	12756 KB	Output is correct
33	Correct	7 ms	11988 KB	Output is correct
34	Correct	9 ms	12244 KB	Output is correct
35	Correct	8 ms	12404 KB	Output is correct
36	Correct	18 ms	12244 KB	Output is correct
37	Correct	9 ms	12244 KB	Output is correct
38	Correct	7 ms	11988 KB	Output is correct
39	Correct	10 ms	12348 KB	Output is correct
40	Correct	8 ms	12244 KB	Output is correct
41	Correct	8 ms	12244 KB	Output is correct
42	Correct	9 ms	12372 KB	Output is correct
43	Correct	9 ms	13012 KB	Output is correct
44	Correct	7 ms	12076 KB	Output is correct
45	Correct	8 ms	12348 KB	Output is correct
46	Correct	9 ms	12340 KB	Output is correct
47	Correct	7 ms	12024 KB	Output is correct
48	Correct	8 ms	12244 KB	Output is correct
49	Correct	8 ms	12372 KB	Output is correct
50	Correct	9 ms	12600 KB	Output is correct
51	Correct	8 ms	12244 KB	Output is correct
52	Correct	23 ms	12220 KB	Output is correct
53	Correct	9 ms	12260 KB	Output is correct
54	Correct	10 ms	12304 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	11988 KB	Output is correct
2	Correct	7 ms	12116 KB	Output is correct
3	Correct	7 ms	12076 KB	Output is correct
4	Correct	7 ms	12080 KB	Output is correct
5	Correct	7 ms	12116 KB	Output is correct
6	Correct	7 ms	12080 KB	Output is correct
7	Correct	7 ms	12076 KB	Output is correct
8	Correct	7 ms	12116 KB	Output is correct
9	Correct	6 ms	12088 KB	Output is correct
10	Correct	7 ms	11988 KB	Output is correct
11	Correct	7 ms	12080 KB	Output is correct
12	Correct	7 ms	11988 KB	Output is correct
13	Correct	7 ms	12108 KB	Output is correct
14	Correct	7 ms	12080 KB	Output is correct
15	Correct	7 ms	12068 KB	Output is correct
16	Correct	7 ms	11988 KB	Output is correct
17	Correct	8 ms	12080 KB	Output is correct
18	Correct	9 ms	12116 KB	Output is correct
19	Correct	9 ms	11988 KB	Output is correct
20	Correct	7 ms	11988 KB	Output is correct
21	Correct	7 ms	12116 KB	Output is correct
22	Correct	12 ms	12040 KB	Output is correct
23	Correct	7 ms	12004 KB	Output is correct
24	Correct	7 ms	11988 KB	Output is correct
25	Correct	7 ms	11988 KB	Output is correct
26	Correct	84 ms	18576 KB	Output is correct
27	Correct	89 ms	18256 KB	Output is correct
28	Correct	9 ms	12320 KB	Output is correct
29	Correct	7 ms	12004 KB	Output is correct
30	Correct	8 ms	12048 KB	Output is correct
31	Correct	98 ms	18456 KB	Output is correct
32	Correct	8 ms	12244 KB	Output is correct
33	Correct	85 ms	41420 KB	Output is correct
34	Correct	104 ms	18372 KB	Output is correct
35	Correct	8 ms	12220 KB	Output is correct
36	Correct	69 ms	21068 KB	Output is correct
37	Correct	8 ms	12244 KB	Output is correct
38	Correct	9 ms	12244 KB	Output is correct
39	Correct	52 ms	18544 KB	Output is correct
40	Correct	8 ms	13012 KB	Output is correct
41	Correct	70 ms	18128 KB	Output is correct
42	Correct	86 ms	25888 KB	Output is correct
43	Correct	11 ms	12088 KB	Output is correct
44	Correct	102 ms	42360 KB	Output is correct
45	Correct	90 ms	31544 KB	Output is correct
46	Correct	9 ms	12244 KB	Output is correct
47	Correct	17 ms	12244 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	53 ms	17324 KB	Output is correct
2	Correct	69 ms	24388 KB	Output is correct
3	Correct	9 ms	12372 KB	Output is correct
4	Correct	9 ms	12244 KB	Output is correct
5	Correct	7 ms	12088 KB	Output is correct
6	Correct	7 ms	12116 KB	Output is correct
7	Correct	8 ms	12220 KB	Output is correct
8	Correct	100 ms	19728 KB	Output is correct
9	Correct	8 ms	12244 KB	Output is correct
10	Correct	88 ms	18840 KB	Output is correct
11	Correct	7 ms	12080 KB	Output is correct
12	Correct	83 ms	18884 KB	Output is correct
13	Correct	84 ms	19976 KB	Output is correct
14	Correct	80 ms	24116 KB	Output is correct
15	Correct	61 ms	18580 KB	Output is correct
16	Correct	10 ms	12372 KB	Output is correct
17	Correct	7 ms	12116 KB	Output is correct
18	Correct	81 ms	23448 KB	Output is correct
19	Correct	119 ms	34436 KB	Output is correct
20	Correct	9 ms	12244 KB	Output is correct
21	Correct	7 ms	12116 KB	Output is correct
22	Correct	94 ms	20308 KB	Output is correct
23	Correct	8 ms	12220 KB	Output is correct
24	Correct	81 ms	19276 KB	Output is correct
25	Correct	96 ms	30928 KB	Output is correct
26	Correct	8 ms	12372 KB	Output is correct
27	Correct	9 ms	12600 KB	Output is correct
28	Correct	8 ms	12216 KB	Output is correct
29	Correct	8 ms	12228 KB	Output is correct
30	Correct	9 ms	12244 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	11988 KB	Output is correct
2	Correct	7 ms	12116 KB	Output is correct
3	Correct	7 ms	12076 KB	Output is correct
4	Correct	7 ms	12080 KB	Output is correct
5	Correct	7 ms	12116 KB	Output is correct
6	Correct	7 ms	12080 KB	Output is correct
7	Correct	7 ms	12076 KB	Output is correct
8	Correct	7 ms	12116 KB	Output is correct
9	Correct	6 ms	12088 KB	Output is correct
10	Correct	7 ms	11988 KB	Output is correct
11	Correct	7 ms	12080 KB	Output is correct
12	Correct	7 ms	11988 KB	Output is correct
13	Correct	7 ms	12108 KB	Output is correct
14	Correct	7 ms	12080 KB	Output is correct
15	Correct	7 ms	12068 KB	Output is correct
16	Correct	7 ms	11988 KB	Output is correct
17	Correct	8 ms	12080 KB	Output is correct
18	Correct	9 ms	12116 KB	Output is correct
19	Correct	9 ms	11988 KB	Output is correct
20	Correct	7 ms	11988 KB	Output is correct
21	Correct	7 ms	12116 KB	Output is correct
22	Correct	12 ms	12040 KB	Output is correct
23	Correct	7 ms	12004 KB	Output is correct
24	Correct	7 ms	11988 KB	Output is correct
25	Correct	7 ms	11988 KB	Output is correct
26	Correct	8 ms	12372 KB	Output is correct
27	Correct	9 ms	12348 KB	Output is correct
28	Correct	9 ms	12604 KB	Output is correct
29	Correct	9 ms	12348 KB	Output is correct
30	Correct	9 ms	12220 KB	Output is correct
31	Correct	7 ms	12076 KB	Output is correct
32	Correct	8 ms	12756 KB	Output is correct
33	Correct	7 ms	11988 KB	Output is correct
34	Correct	9 ms	12244 KB	Output is correct
35	Correct	8 ms	12404 KB	Output is correct
36	Correct	18 ms	12244 KB	Output is correct
37	Correct	9 ms	12244 KB	Output is correct
38	Correct	7 ms	11988 KB	Output is correct
39	Correct	10 ms	12348 KB	Output is correct
40	Correct	8 ms	12244 KB	Output is correct
41	Correct	8 ms	12244 KB	Output is correct
42	Correct	9 ms	12372 KB	Output is correct
43	Correct	9 ms	13012 KB	Output is correct
44	Correct	7 ms	12076 KB	Output is correct
45	Correct	8 ms	12348 KB	Output is correct
46	Correct	9 ms	12340 KB	Output is correct
47	Correct	7 ms	12024 KB	Output is correct
48	Correct	8 ms	12244 KB	Output is correct
49	Correct	8 ms	12372 KB	Output is correct
50	Correct	9 ms	12600 KB	Output is correct
51	Correct	8 ms	12244 KB	Output is correct
52	Correct	23 ms	12220 KB	Output is correct
53	Correct	9 ms	12260 KB	Output is correct
54	Correct	10 ms	12304 KB	Output is correct
55	Correct	7 ms	11988 KB	Output is correct
56	Correct	84 ms	18576 KB	Output is correct
57	Correct	89 ms	18256 KB	Output is correct
58	Correct	9 ms	12320 KB	Output is correct
59	Correct	7 ms	12004 KB	Output is correct
60	Correct	8 ms	12048 KB	Output is correct
61	Correct	98 ms	18456 KB	Output is correct
62	Correct	8 ms	12244 KB	Output is correct
63	Correct	85 ms	41420 KB	Output is correct
64	Correct	104 ms	18372 KB	Output is correct
65	Correct	8 ms	12220 KB	Output is correct
66	Correct	69 ms	21068 KB	Output is correct
67	Correct	8 ms	12244 KB	Output is correct
68	Correct	9 ms	12244 KB	Output is correct
69	Correct	52 ms	18544 KB	Output is correct
70	Correct	8 ms	13012 KB	Output is correct
71	Correct	70 ms	18128 KB	Output is correct
72	Correct	86 ms	25888 KB	Output is correct
73	Correct	11 ms	12088 KB	Output is correct
74	Correct	102 ms	42360 KB	Output is correct
75	Correct	90 ms	31544 KB	Output is correct
76	Correct	9 ms	12244 KB	Output is correct
77	Correct	17 ms	12244 KB	Output is correct
78	Correct	53 ms	17324 KB	Output is correct
79	Correct	69 ms	24388 KB	Output is correct
80	Correct	9 ms	12372 KB	Output is correct
81	Correct	9 ms	12244 KB	Output is correct
82	Correct	7 ms	12088 KB	Output is correct
83	Correct	7 ms	12116 KB	Output is correct
84	Correct	8 ms	12220 KB	Output is correct
85	Correct	100 ms	19728 KB	Output is correct
86	Correct	8 ms	12244 KB	Output is correct
87	Correct	88 ms	18840 KB	Output is correct
88	Correct	7 ms	12080 KB	Output is correct
89	Correct	83 ms	18884 KB	Output is correct
90	Correct	84 ms	19976 KB	Output is correct
91	Correct	80 ms	24116 KB	Output is correct
92	Correct	61 ms	18580 KB	Output is correct
93	Correct	10 ms	12372 KB	Output is correct
94	Correct	7 ms	12116 KB	Output is correct
95	Correct	81 ms	23448 KB	Output is correct
96	Correct	119 ms	34436 KB	Output is correct
97	Correct	9 ms	12244 KB	Output is correct
98	Correct	7 ms	12116 KB	Output is correct
99	Correct	94 ms	20308 KB	Output is correct
100	Correct	8 ms	12220 KB	Output is correct
101	Correct	81 ms	19276 KB	Output is correct
102	Correct	96 ms	30928 KB	Output is correct
103	Correct	8 ms	12372 KB	Output is correct
104	Correct	9 ms	12600 KB	Output is correct
105	Correct	8 ms	12216 KB	Output is correct
106	Correct	8 ms	12228 KB	Output is correct
107	Correct	9 ms	12244 KB	Output is correct
108	Correct	593 ms	55096 KB	Output is correct
109	Correct	579 ms	102620 KB	Output is correct
110	Correct	591 ms	138516 KB	Output is correct
111	Correct	645 ms	132452 KB	Output is correct
112	Correct	590 ms	97896 KB	Output is correct
113	Correct	452 ms	70220 KB	Output is correct
114	Correct	482 ms	43704 KB	Output is correct
115	Correct	489 ms	43852 KB	Output is correct
116	Correct	774 ms	48572 KB	Output is correct
117	Correct	582 ms	73312 KB	Output is correct
118	Correct	529 ms	45564 KB	Output is correct
119	Correct	604 ms	73444 KB	Output is correct
120	Correct	624 ms	110540 KB	Output is correct
121	Correct	605 ms	73452 KB	Output is correct
122	Correct	919 ms	57700 KB	Output is correct
123	Correct	413 ms	74896 KB	Output is correct
124	Correct	578 ms	64964 KB	Output is correct

답안 #545524

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 24.0 / 24.0

Subtask #3 14.0 / 14.0

Subtask #4 22.0 / 22.0

Subtask #5 30.0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
24.0 / 24.0

Subtask #3
14.0 / 14.0

Subtask #4
22.0 / 22.0

Subtask #5
30.0 / 30.0