답안 #102728

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
102728	2019-03-27T09:29:27 Z	psmao	Mergers (JOI19_mergers)	C++14	100 / 100	1187 ms	87288 KB

mergers

#include <bits/stdc++.h>
using namespace std;

#define fo(i,s,t) for(int i = s; i <= t; ++ i)
#define fd(i,s,t) for(int i = s; i >= t; -- i)
#define bf(i,s) for(int i = head[s]; i; i = e[i].next)
#define mp make_pair
#define fi first
#define se second
#define pii pair<int,int>
#define pb push_back
#define VI vector<int>
#define sf scanf
#define pf printf
#define fp freopen
#define SZ(x) ((int)(x).size())
#ifdef MPS
#define D(x...) printf(x)
#else
#define D(x...)
#endif
typedef long long ll;
typedef double db;
typedef unsigned long long ull;
const int inf = 1<<30;
const ll INF = 1ll<<60;
const db Inf = 1e20;
const db eps = 1e-9;

void gmax(int &a,int b){a = (a > b ? a : b);}
void gmin(int &a,int b){a = (a < b ? a : b);}

const int maxn = 500050;

int n, K, fa[maxn], par[maxn], dep[maxn], deg[maxn];
VI adj[maxn], col[maxn];

int getfa(int x) {return fa[x] == x ? x : fa[x] = getfa(fa[x]);}
void merge(int u, int v) {u = getfa(u); v = getfa(v); fa[u] = v;}
void combine(int u, int v)
{
	while(u != v)
	{
		if(dep[u] > dep[v])
		{
			merge(u, par[u]);
			u = getfa(par[u]);
		}
		else
		{
			merge(v, par[v]);
			v = getfa(par[v]);
		}
	}
}
void dfs(int u, int f = 0)
{
	for(auto p : adj[u]) if(p != f)
	{
		par[p] = u;
		dep[p] = dep[u] + 1;
		dfs(p, u);
	}
}
int main()
{
	#ifdef MPS	
		fp("1.in","r",stdin);
		fp("1.out","w",stdout);
	#endif
	sf("%d%d",&n,&K);
	fo(i,2,n)
	{
		int u, v; sf("%d%d",&u,&v);
		adj[u].pb(v); adj[v].pb(u);
	}	
	fo(i,1,n) fa[i] = i;
	fo(i,1,n) {int x; sf("%d",&x); col[x].pb(i);}
	dfs(1);
	fo(i,1,K) fo(j,1,SZ(col[i])-1) combine(col[i][j], col[i][0]);
	fo(i,1,n) for(auto p : adj[i]) 
		if(getfa(i) != getfa(p) && dep[i] + 1 == dep[p]) 
		{
			++ deg[getfa(i)]; ++ deg[getfa(p)];
		}
	int leaves = 0;
	fo(i,1,n) if(getfa(i) == i && deg[i] == 1) ++ leaves;
	pf("%d\n",(int)ceil(leaves/2.0));
	return 0;
}

Compilation message

mergers.cpp: In function 'int main()':
mergers.cpp:71:4: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  sf("%d%d",&n,&K);
    ^
mergers.cpp:74:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int u, v; sf("%d%d",&u,&v);
               ^
mergers.cpp:78:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  fo(i,1,n) {int x; sf("%d",&x); col[x].pb(i);}
                      ^

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	23808 KB	Output is correct
2	Correct	28 ms	23896 KB	Output is correct
3	Correct	27 ms	23808 KB	Output is correct
4	Correct	30 ms	23780 KB	Output is correct
5	Correct	29 ms	23808 KB	Output is correct
6	Correct	28 ms	23856 KB	Output is correct
7	Correct	24 ms	23808 KB	Output is correct
8	Correct	24 ms	23808 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	24 ms	23808 KB	Output is correct
12	Correct	29 ms	23872 KB	Output is correct
13	Correct	27 ms	23804 KB	Output is correct
14	Correct	26 ms	23808 KB	Output is correct
15	Correct	25 ms	23832 KB	Output is correct
16	Correct	24 ms	23808 KB	Output is correct
17	Correct	24 ms	23808 KB	Output is correct
18	Correct	26 ms	23808 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	28 ms	23808 KB	Output is correct
21	Correct	24 ms	23780 KB	Output is correct
22	Correct	27 ms	23832 KB	Output is correct
23	Correct	24 ms	23808 KB	Output is correct
24	Correct	25 ms	23776 KB	Output is correct

Subtask #2
24.0 / 24.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	23808 KB	Output is correct
2	Correct	28 ms	23896 KB	Output is correct
3	Correct	27 ms	23808 KB	Output is correct
4	Correct	30 ms	23780 KB	Output is correct
5	Correct	29 ms	23808 KB	Output is correct
6	Correct	28 ms	23856 KB	Output is correct
7	Correct	24 ms	23808 KB	Output is correct
8	Correct	24 ms	23808 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	24 ms	23808 KB	Output is correct
12	Correct	29 ms	23872 KB	Output is correct
13	Correct	27 ms	23804 KB	Output is correct
14	Correct	26 ms	23808 KB	Output is correct
15	Correct	25 ms	23832 KB	Output is correct
16	Correct	24 ms	23808 KB	Output is correct
17	Correct	24 ms	23808 KB	Output is correct
18	Correct	26 ms	23808 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	28 ms	23808 KB	Output is correct
21	Correct	24 ms	23780 KB	Output is correct
22	Correct	27 ms	23832 KB	Output is correct
23	Correct	24 ms	23808 KB	Output is correct
24	Correct	25 ms	23776 KB	Output is correct
25	Correct	27 ms	24064 KB	Output is correct
26	Correct	27 ms	24060 KB	Output is correct
27	Correct	32 ms	24056 KB	Output is correct
28	Correct	25 ms	24192 KB	Output is correct
29	Correct	27 ms	24056 KB	Output is correct
30	Correct	26 ms	24064 KB	Output is correct
31	Correct	24 ms	23808 KB	Output is correct
32	Correct	28 ms	24184 KB	Output is correct
33	Correct	25 ms	23800 KB	Output is correct
34	Correct	27 ms	24064 KB	Output is correct
35	Correct	27 ms	24064 KB	Output is correct
36	Correct	25 ms	24064 KB	Output is correct
37	Correct	25 ms	24064 KB	Output is correct
38	Correct	24 ms	23808 KB	Output is correct
39	Correct	27 ms	24064 KB	Output is correct
40	Correct	28 ms	24064 KB	Output is correct
41	Correct	25 ms	24056 KB	Output is correct
42	Correct	25 ms	24064 KB	Output is correct
43	Correct	27 ms	24192 KB	Output is correct
44	Correct	23 ms	23808 KB	Output is correct
45	Correct	30 ms	24056 KB	Output is correct
46	Correct	27 ms	24040 KB	Output is correct
47	Correct	27 ms	23808 KB	Output is correct
48	Correct	28 ms	24064 KB	Output is correct
49	Correct	26 ms	24184 KB	Output is correct
50	Correct	26 ms	24192 KB	Output is correct
51	Correct	26 ms	24064 KB	Output is correct
52	Correct	26 ms	24064 KB	Output is correct
53	Correct	23 ms	24064 KB	Output is correct
54	Correct	26 ms	24060 KB	Output is correct

Subtask #3
14.0 / 14.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	23808 KB	Output is correct
2	Correct	28 ms	23896 KB	Output is correct
3	Correct	27 ms	23808 KB	Output is correct
4	Correct	30 ms	23780 KB	Output is correct
5	Correct	29 ms	23808 KB	Output is correct
6	Correct	28 ms	23856 KB	Output is correct
7	Correct	24 ms	23808 KB	Output is correct
8	Correct	24 ms	23808 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	24 ms	23808 KB	Output is correct
12	Correct	29 ms	23872 KB	Output is correct
13	Correct	27 ms	23804 KB	Output is correct
14	Correct	26 ms	23808 KB	Output is correct
15	Correct	25 ms	23832 KB	Output is correct
16	Correct	24 ms	23808 KB	Output is correct
17	Correct	24 ms	23808 KB	Output is correct
18	Correct	26 ms	23808 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	28 ms	23808 KB	Output is correct
21	Correct	24 ms	23780 KB	Output is correct
22	Correct	27 ms	23832 KB	Output is correct
23	Correct	24 ms	23808 KB	Output is correct
24	Correct	25 ms	23776 KB	Output is correct
25	Correct	22 ms	23808 KB	Output is correct
26	Correct	101 ms	30572 KB	Output is correct
27	Correct	155 ms	30204 KB	Output is correct
28	Correct	24 ms	24064 KB	Output is correct
29	Correct	29 ms	23800 KB	Output is correct
30	Correct	25 ms	23808 KB	Output is correct
31	Correct	123 ms	30204 KB	Output is correct
32	Correct	30 ms	24056 KB	Output is correct
33	Correct	150 ms	34424 KB	Output is correct
34	Correct	126 ms	30328 KB	Output is correct
35	Correct	25 ms	24064 KB	Output is correct
36	Correct	141 ms	30664 KB	Output is correct
37	Correct	26 ms	24064 KB	Output is correct
38	Correct	28 ms	24084 KB	Output is correct
39	Correct	99 ms	30476 KB	Output is correct
40	Correct	27 ms	24192 KB	Output is correct
41	Correct	121 ms	30196 KB	Output is correct
42	Correct	148 ms	31480 KB	Output is correct
43	Correct	23 ms	23808 KB	Output is correct
44	Correct	146 ms	34588 KB	Output is correct
45	Correct	135 ms	32376 KB	Output is correct
46	Correct	26 ms	24064 KB	Output is correct
47	Correct	25 ms	24064 KB	Output is correct

Subtask #4
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	92 ms	30528 KB	Output is correct
2	Correct	120 ms	33888 KB	Output is correct
3	Correct	28 ms	24184 KB	Output is correct
4	Correct	26 ms	24056 KB	Output is correct
5	Correct	24 ms	23808 KB	Output is correct
6	Correct	24 ms	23808 KB	Output is correct
7	Correct	28 ms	24036 KB	Output is correct
8	Correct	143 ms	31864 KB	Output is correct
9	Correct	27 ms	24056 KB	Output is correct
10	Correct	140 ms	30840 KB	Output is correct
11	Correct	27 ms	23808 KB	Output is correct
12	Correct	176 ms	30688 KB	Output is correct
13	Correct	207 ms	31840 KB	Output is correct
14	Correct	155 ms	33692 KB	Output is correct
15	Correct	103 ms	30448 KB	Output is correct
16	Correct	33 ms	24064 KB	Output is correct
17	Correct	26 ms	23928 KB	Output is correct
18	Correct	120 ms	33520 KB	Output is correct
19	Correct	159 ms	35932 KB	Output is correct
20	Correct	25 ms	24064 KB	Output is correct
21	Correct	25 ms	23808 KB	Output is correct
22	Correct	108 ms	32160 KB	Output is correct
23	Correct	24 ms	24064 KB	Output is correct
24	Correct	161 ms	31240 KB	Output is correct
25	Correct	159 ms	34960 KB	Output is correct
26	Correct	30 ms	24172 KB	Output is correct
27	Correct	26 ms	24184 KB	Output is correct
28	Correct	29 ms	24060 KB	Output is correct
29	Correct	26 ms	24056 KB	Output is correct
30	Correct	26 ms	24064 KB	Output is correct

Subtask #5
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	23808 KB	Output is correct
2	Correct	28 ms	23896 KB	Output is correct
3	Correct	27 ms	23808 KB	Output is correct
4	Correct	30 ms	23780 KB	Output is correct
5	Correct	29 ms	23808 KB	Output is correct
6	Correct	28 ms	23856 KB	Output is correct
7	Correct	24 ms	23808 KB	Output is correct
8	Correct	24 ms	23808 KB	Output is correct
9	Correct	24 ms	23808 KB	Output is correct
10	Correct	25 ms	23808 KB	Output is correct
11	Correct	24 ms	23808 KB	Output is correct
12	Correct	29 ms	23872 KB	Output is correct
13	Correct	27 ms	23804 KB	Output is correct
14	Correct	26 ms	23808 KB	Output is correct
15	Correct	25 ms	23832 KB	Output is correct
16	Correct	24 ms	23808 KB	Output is correct
17	Correct	24 ms	23808 KB	Output is correct
18	Correct	26 ms	23808 KB	Output is correct
19	Correct	26 ms	23808 KB	Output is correct
20	Correct	28 ms	23808 KB	Output is correct
21	Correct	24 ms	23780 KB	Output is correct
22	Correct	27 ms	23832 KB	Output is correct
23	Correct	24 ms	23808 KB	Output is correct
24	Correct	25 ms	23776 KB	Output is correct
25	Correct	27 ms	24064 KB	Output is correct
26	Correct	27 ms	24060 KB	Output is correct
27	Correct	32 ms	24056 KB	Output is correct
28	Correct	25 ms	24192 KB	Output is correct
29	Correct	27 ms	24056 KB	Output is correct
30	Correct	26 ms	24064 KB	Output is correct
31	Correct	24 ms	23808 KB	Output is correct
32	Correct	28 ms	24184 KB	Output is correct
33	Correct	25 ms	23800 KB	Output is correct
34	Correct	27 ms	24064 KB	Output is correct
35	Correct	27 ms	24064 KB	Output is correct
36	Correct	25 ms	24064 KB	Output is correct
37	Correct	25 ms	24064 KB	Output is correct
38	Correct	24 ms	23808 KB	Output is correct
39	Correct	27 ms	24064 KB	Output is correct
40	Correct	28 ms	24064 KB	Output is correct
41	Correct	25 ms	24056 KB	Output is correct
42	Correct	25 ms	24064 KB	Output is correct
43	Correct	27 ms	24192 KB	Output is correct
44	Correct	23 ms	23808 KB	Output is correct
45	Correct	30 ms	24056 KB	Output is correct
46	Correct	27 ms	24040 KB	Output is correct
47	Correct	27 ms	23808 KB	Output is correct
48	Correct	28 ms	24064 KB	Output is correct
49	Correct	26 ms	24184 KB	Output is correct
50	Correct	26 ms	24192 KB	Output is correct
51	Correct	26 ms	24064 KB	Output is correct
52	Correct	26 ms	24064 KB	Output is correct
53	Correct	23 ms	24064 KB	Output is correct
54	Correct	26 ms	24060 KB	Output is correct
55	Correct	22 ms	23808 KB	Output is correct
56	Correct	101 ms	30572 KB	Output is correct
57	Correct	155 ms	30204 KB	Output is correct
58	Correct	24 ms	24064 KB	Output is correct
59	Correct	29 ms	23800 KB	Output is correct
60	Correct	25 ms	23808 KB	Output is correct
61	Correct	123 ms	30204 KB	Output is correct
62	Correct	30 ms	24056 KB	Output is correct
63	Correct	150 ms	34424 KB	Output is correct
64	Correct	126 ms	30328 KB	Output is correct
65	Correct	25 ms	24064 KB	Output is correct
66	Correct	141 ms	30664 KB	Output is correct
67	Correct	26 ms	24064 KB	Output is correct
68	Correct	28 ms	24084 KB	Output is correct
69	Correct	99 ms	30476 KB	Output is correct
70	Correct	27 ms	24192 KB	Output is correct
71	Correct	121 ms	30196 KB	Output is correct
72	Correct	148 ms	31480 KB	Output is correct
73	Correct	23 ms	23808 KB	Output is correct
74	Correct	146 ms	34588 KB	Output is correct
75	Correct	135 ms	32376 KB	Output is correct
76	Correct	26 ms	24064 KB	Output is correct
77	Correct	25 ms	24064 KB	Output is correct
78	Correct	92 ms	30528 KB	Output is correct
79	Correct	120 ms	33888 KB	Output is correct
80	Correct	28 ms	24184 KB	Output is correct
81	Correct	26 ms	24056 KB	Output is correct
82	Correct	24 ms	23808 KB	Output is correct
83	Correct	24 ms	23808 KB	Output is correct
84	Correct	28 ms	24036 KB	Output is correct
85	Correct	143 ms	31864 KB	Output is correct
86	Correct	27 ms	24056 KB	Output is correct
87	Correct	140 ms	30840 KB	Output is correct
88	Correct	27 ms	23808 KB	Output is correct
89	Correct	176 ms	30688 KB	Output is correct
90	Correct	207 ms	31840 KB	Output is correct
91	Correct	155 ms	33692 KB	Output is correct
92	Correct	103 ms	30448 KB	Output is correct
93	Correct	33 ms	24064 KB	Output is correct
94	Correct	26 ms	23928 KB	Output is correct
95	Correct	120 ms	33520 KB	Output is correct
96	Correct	159 ms	35932 KB	Output is correct
97	Correct	25 ms	24064 KB	Output is correct
98	Correct	25 ms	23808 KB	Output is correct
99	Correct	108 ms	32160 KB	Output is correct
100	Correct	24 ms	24064 KB	Output is correct
101	Correct	161 ms	31240 KB	Output is correct
102	Correct	159 ms	34960 KB	Output is correct
103	Correct	30 ms	24172 KB	Output is correct
104	Correct	26 ms	24184 KB	Output is correct
105	Correct	29 ms	24060 KB	Output is correct
106	Correct	26 ms	24056 KB	Output is correct
107	Correct	26 ms	24064 KB	Output is correct
108	Correct	742 ms	65736 KB	Output is correct
109	Correct	1000 ms	66356 KB	Output is correct
110	Correct	958 ms	72932 KB	Output is correct
111	Correct	1116 ms	87288 KB	Output is correct
112	Correct	1074 ms	81272 KB	Output is correct
113	Correct	708 ms	73436 KB	Output is correct
114	Correct	772 ms	55780 KB	Output is correct
115	Correct	837 ms	55800 KB	Output is correct
116	Correct	1069 ms	62132 KB	Output is correct
117	Correct	968 ms	73592 KB	Output is correct
118	Correct	954 ms	58576 KB	Output is correct
119	Correct	1010 ms	73692 KB	Output is correct
120	Correct	1094 ms	81796 KB	Output is correct
121	Correct	1187 ms	73848 KB	Output is correct
122	Correct	1158 ms	67292 KB	Output is correct
123	Correct	731 ms	74984 KB	Output is correct
124	Correct	1103 ms	72264 KB	Output is correct

답안 #102728

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