답안 #55842 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
55842	2018-07-09T05:45:31 Z	김세빈(#1563)	Telegraph (JOI16_telegraph)	C++11	10 / 100	6 ms	3076 KB

telegraph

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

vector <ll> V[101010], T;
ll P[101010], C[101010];
ll M1[101010], M2[101010];
bool chk[101010];
ll n, ans;

void dfs(ll p, ll r)
{
	ll s, m;
	
	s = m = 0;
	chk[p] = 1;
	
	for(auto t: V[p]){
		if(t != r){
			dfs(t, 0);
			m = max(m, C[t]);
		}
		s += C[t];
	}
	
	if(r){
		M1[p] = s - max(C[r], m);
		M2[p] = s - m;
	}
	else ans += s - m;
}

int main()
{
	ll i, j, k, p, s;
	
	scanf("%lld", &n);
	
	for(i=1;i<=n;i++){
		scanf("%lld%lld", P+i, C+i);
		V[P[i]].push_back(i);
	}
	
	k = 0;
	for(i=1;!chk[i];i=P[i]){
		chk[i] = 1;
		k ++;
	}
	if(k == n){
		printf("0\n");
		return 0;
	}
	
	for(i=1;i<=n;i++) chk[i] = 0;
	
	for(i=1;i<=n;i++){
		if(!chk[i]){
			T.clear();
			for(j=i;!chk[j];j=P[j]) chk[j] = 1;
			T.push_back(j);
			for(k=P[j];k!=j;k=P[k]) T.push_back(k);
			for(j=i;chk[j];j=P[j]) chk[j] = 0;
			
			p = T.back();
			s = 0;
			for(i=0;i<T.size();i++){
				dfs(T[i], p);
				s += M1[T[i]];
				p = T[i];
			}
			
			k = 1e18;
			
			for(i=0;i<T.size();i++){
				k = min(k, s - M1[T[i]] + M2[T[i]]);
			}
			
			ans += k;
		}
	}
	
	printf("%lld\n", ans);
	
	return 0;
}

Compilation message

telegraph.cpp: In function 'int main()':
telegraph.cpp:68:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(i=0;i<T.size();i++){
            ~^~~~~~~~~
telegraph.cpp:76:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(i=0;i<T.size();i++){
            ~^~~~~~~~~
telegraph.cpp:39:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld", &n);
  ~~~~~^~~~~~~~~~~~
telegraph.cpp:42:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld", P+i, C+i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2788 KB	Output is correct
3	Correct	4 ms	2864 KB	Output is correct
4	Correct	4 ms	2864 KB	Output is correct
5	Correct	4 ms	2864 KB	Output is correct
6	Correct	4 ms	2864 KB	Output is correct
7	Correct	4 ms	2864 KB	Output is correct
8	Correct	4 ms	2864 KB	Output is correct
9	Correct	4 ms	2864 KB	Output is correct
10	Correct	3 ms	2864 KB	Output is correct
11	Correct	4 ms	2864 KB	Output is correct
12	Correct	4 ms	2916 KB	Output is correct
13	Correct	4 ms	2956 KB	Output is correct
14	Correct	4 ms	2968 KB	Output is correct
15	Correct	4 ms	2968 KB	Output is correct
16	Correct	4 ms	2968 KB	Output is correct
17	Correct	5 ms	2968 KB	Output is correct
18	Correct	4 ms	2968 KB	Output is correct
19	Correct	4 ms	2968 KB	Output is correct
20	Correct	4 ms	2968 KB	Output is correct
21	Correct	4 ms	2968 KB	Output is correct
22	Correct	4 ms	3076 KB	Output is correct
23	Correct	4 ms	3076 KB	Output is correct
24	Correct	5 ms	3076 KB	Output is correct
25	Correct	4 ms	3076 KB	Output is correct
26	Correct	4 ms	3076 KB	Output is correct
27	Correct	3 ms	3076 KB	Output is correct
28	Correct	5 ms	3076 KB	Output is correct
29	Correct	4 ms	3076 KB	Output is correct
30	Correct	4 ms	3076 KB	Output is correct
31	Correct	4 ms	3076 KB	Output is correct
32	Correct	4 ms	3076 KB	Output is correct
33	Correct	5 ms	3076 KB	Output is correct
34	Correct	4 ms	3076 KB	Output is correct
35	Correct	4 ms	3076 KB	Output is correct
36	Correct	4 ms	3076 KB	Output is correct
37	Correct	4 ms	3076 KB	Output is correct
38	Correct	4 ms	3076 KB	Output is correct
39	Correct	6 ms	3076 KB	Output is correct
40	Correct	5 ms	3076 KB	Output is correct
41	Correct	6 ms	3076 KB	Output is correct
42	Correct	5 ms	3076 KB	Output is correct
43	Correct	5 ms	3076 KB	Output is correct
44	Correct	4 ms	3076 KB	Output is correct
45	Correct	4 ms	3076 KB	Output is correct
46	Correct	4 ms	3076 KB	Output is correct
47	Correct	4 ms	3076 KB	Output is correct
48	Correct	4 ms	3076 KB	Output is correct

Subtask #2
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2788 KB	Output is correct
3	Correct	4 ms	2864 KB	Output is correct
4	Correct	4 ms	2864 KB	Output is correct
5	Correct	4 ms	2864 KB	Output is correct
6	Correct	4 ms	2864 KB	Output is correct
7	Correct	4 ms	2864 KB	Output is correct
8	Correct	4 ms	2864 KB	Output is correct
9	Correct	4 ms	2864 KB	Output is correct
10	Correct	3 ms	2864 KB	Output is correct
11	Correct	4 ms	2864 KB	Output is correct
12	Correct	4 ms	2916 KB	Output is correct
13	Correct	4 ms	2956 KB	Output is correct
14	Correct	4 ms	2968 KB	Output is correct
15	Correct	4 ms	2968 KB	Output is correct
16	Correct	4 ms	2968 KB	Output is correct
17	Correct	5 ms	2968 KB	Output is correct
18	Correct	4 ms	2968 KB	Output is correct
19	Correct	4 ms	2968 KB	Output is correct
20	Correct	4 ms	2968 KB	Output is correct
21	Correct	4 ms	2968 KB	Output is correct
22	Correct	4 ms	3076 KB	Output is correct
23	Correct	4 ms	3076 KB	Output is correct
24	Correct	5 ms	3076 KB	Output is correct
25	Correct	4 ms	3076 KB	Output is correct
26	Correct	4 ms	3076 KB	Output is correct
27	Correct	3 ms	3076 KB	Output is correct
28	Correct	5 ms	3076 KB	Output is correct
29	Correct	4 ms	3076 KB	Output is correct
30	Correct	4 ms	3076 KB	Output is correct
31	Correct	4 ms	3076 KB	Output is correct
32	Correct	4 ms	3076 KB	Output is correct
33	Correct	5 ms	3076 KB	Output is correct
34	Correct	4 ms	3076 KB	Output is correct
35	Correct	4 ms	3076 KB	Output is correct
36	Correct	4 ms	3076 KB	Output is correct
37	Correct	4 ms	3076 KB	Output is correct
38	Correct	4 ms	3076 KB	Output is correct
39	Correct	6 ms	3076 KB	Output is correct
40	Correct	5 ms	3076 KB	Output is correct
41	Correct	6 ms	3076 KB	Output is correct
42	Correct	5 ms	3076 KB	Output is correct
43	Correct	5 ms	3076 KB	Output is correct
44	Correct	4 ms	3076 KB	Output is correct
45	Correct	4 ms	3076 KB	Output is correct
46	Correct	4 ms	3076 KB	Output is correct
47	Correct	4 ms	3076 KB	Output is correct
48	Correct	4 ms	3076 KB	Output is correct
49	Correct	4 ms	3076 KB	Output is correct
50	Correct	4 ms	3076 KB	Output is correct
51	Correct	5 ms	3076 KB	Output is correct
52	Correct	5 ms	3076 KB	Output is correct
53	Correct	4 ms	3076 KB	Output is correct
54	Correct	4 ms	3076 KB	Output is correct
55	Correct	5 ms	3076 KB	Output is correct
56	Correct	4 ms	3076 KB	Output is correct
57	Correct	4 ms	3076 KB	Output is correct
58	Correct	6 ms	3076 KB	Output is correct
59	Correct	5 ms	3076 KB	Output is correct
60	Correct	4 ms	3076 KB	Output is correct
61	Correct	5 ms	3076 KB	Output is correct
62	Correct	4 ms	3076 KB	Output is correct
63	Correct	5 ms	3076 KB	Output is correct
64	Correct	4 ms	3076 KB	Output is correct
65	Correct	4 ms	3076 KB	Output is correct
66	Correct	4 ms	3076 KB	Output is correct
67	Correct	5 ms	3076 KB	Output is correct
68	Correct	5 ms	3076 KB	Output is correct
69	Correct	5 ms	3076 KB	Output is correct
70	Correct	6 ms	3076 KB	Output is correct
71	Correct	4 ms	3076 KB	Output is correct
72	Correct	3 ms	3076 KB	Output is correct
73	Correct	4 ms	3076 KB	Output is correct
74	Correct	4 ms	3076 KB	Output is correct
75	Correct	5 ms	3076 KB	Output is correct
76	Correct	4 ms	3076 KB	Output is correct
77	Correct	5 ms	3076 KB	Output is correct
78	Correct	4 ms	3076 KB	Output is correct
79	Correct	5 ms	3076 KB	Output is correct
80	Correct	4 ms	3076 KB	Output is correct
81	Correct	5 ms	3076 KB	Output is correct
82	Correct	5 ms	3076 KB	Output is correct
83	Incorrect	5 ms	3076 KB	Output isn't correct
84	Halted	0 ms	0 KB	-

Subtask #3
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2788 KB	Output is correct
3	Correct	4 ms	2864 KB	Output is correct
4	Correct	4 ms	2864 KB	Output is correct
5	Correct	4 ms	2864 KB	Output is correct
6	Correct	4 ms	2864 KB	Output is correct
7	Correct	4 ms	2864 KB	Output is correct
8	Correct	4 ms	2864 KB	Output is correct
9	Correct	4 ms	2864 KB	Output is correct
10	Correct	3 ms	2864 KB	Output is correct
11	Correct	4 ms	2864 KB	Output is correct
12	Correct	4 ms	2916 KB	Output is correct
13	Correct	4 ms	2956 KB	Output is correct
14	Correct	4 ms	2968 KB	Output is correct
15	Correct	4 ms	2968 KB	Output is correct
16	Correct	4 ms	2968 KB	Output is correct
17	Correct	5 ms	2968 KB	Output is correct
18	Correct	4 ms	2968 KB	Output is correct
19	Correct	4 ms	2968 KB	Output is correct
20	Correct	4 ms	2968 KB	Output is correct
21	Correct	4 ms	2968 KB	Output is correct
22	Correct	4 ms	3076 KB	Output is correct
23	Correct	4 ms	3076 KB	Output is correct
24	Correct	5 ms	3076 KB	Output is correct
25	Correct	4 ms	3076 KB	Output is correct
26	Correct	4 ms	3076 KB	Output is correct
27	Correct	3 ms	3076 KB	Output is correct
28	Correct	5 ms	3076 KB	Output is correct
29	Correct	4 ms	3076 KB	Output is correct
30	Correct	4 ms	3076 KB	Output is correct
31	Correct	4 ms	3076 KB	Output is correct
32	Correct	4 ms	3076 KB	Output is correct
33	Correct	5 ms	3076 KB	Output is correct
34	Correct	4 ms	3076 KB	Output is correct
35	Correct	4 ms	3076 KB	Output is correct
36	Correct	4 ms	3076 KB	Output is correct
37	Correct	4 ms	3076 KB	Output is correct
38	Correct	4 ms	3076 KB	Output is correct
39	Correct	6 ms	3076 KB	Output is correct
40	Correct	5 ms	3076 KB	Output is correct
41	Correct	6 ms	3076 KB	Output is correct
42	Correct	5 ms	3076 KB	Output is correct
43	Correct	5 ms	3076 KB	Output is correct
44	Correct	4 ms	3076 KB	Output is correct
45	Correct	4 ms	3076 KB	Output is correct
46	Correct	4 ms	3076 KB	Output is correct
47	Correct	4 ms	3076 KB	Output is correct
48	Correct	4 ms	3076 KB	Output is correct
49	Correct	4 ms	3076 KB	Output is correct
50	Correct	4 ms	3076 KB	Output is correct
51	Correct	5 ms	3076 KB	Output is correct
52	Correct	5 ms	3076 KB	Output is correct
53	Correct	4 ms	3076 KB	Output is correct
54	Correct	4 ms	3076 KB	Output is correct
55	Correct	5 ms	3076 KB	Output is correct
56	Correct	4 ms	3076 KB	Output is correct
57	Correct	4 ms	3076 KB	Output is correct
58	Correct	6 ms	3076 KB	Output is correct
59	Correct	5 ms	3076 KB	Output is correct
60	Correct	4 ms	3076 KB	Output is correct
61	Correct	5 ms	3076 KB	Output is correct
62	Correct	4 ms	3076 KB	Output is correct
63	Correct	5 ms	3076 KB	Output is correct
64	Correct	4 ms	3076 KB	Output is correct
65	Correct	4 ms	3076 KB	Output is correct
66	Correct	4 ms	3076 KB	Output is correct
67	Correct	5 ms	3076 KB	Output is correct
68	Correct	5 ms	3076 KB	Output is correct
69	Correct	5 ms	3076 KB	Output is correct
70	Correct	6 ms	3076 KB	Output is correct
71	Correct	4 ms	3076 KB	Output is correct
72	Correct	3 ms	3076 KB	Output is correct
73	Correct	4 ms	3076 KB	Output is correct
74	Correct	4 ms	3076 KB	Output is correct
75	Correct	5 ms	3076 KB	Output is correct
76	Correct	4 ms	3076 KB	Output is correct
77	Correct	5 ms	3076 KB	Output is correct
78	Correct	4 ms	3076 KB	Output is correct
79	Correct	5 ms	3076 KB	Output is correct
80	Correct	4 ms	3076 KB	Output is correct
81	Correct	5 ms	3076 KB	Output is correct
82	Correct	5 ms	3076 KB	Output is correct
83	Incorrect	5 ms	3076 KB	Output isn't correct
84	Halted	0 ms	0 KB	-

Subtask #4
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	2680 KB	Output is correct
2	Correct	4 ms	2788 KB	Output is correct
3	Correct	4 ms	2864 KB	Output is correct
4	Correct	4 ms	2864 KB	Output is correct
5	Correct	4 ms	2864 KB	Output is correct
6	Correct	4 ms	2864 KB	Output is correct
7	Correct	4 ms	2864 KB	Output is correct
8	Correct	4 ms	2864 KB	Output is correct
9	Correct	4 ms	2864 KB	Output is correct
10	Correct	3 ms	2864 KB	Output is correct
11	Correct	4 ms	2864 KB	Output is correct
12	Correct	4 ms	2916 KB	Output is correct
13	Correct	4 ms	2956 KB	Output is correct
14	Correct	4 ms	2968 KB	Output is correct
15	Correct	4 ms	2968 KB	Output is correct
16	Correct	4 ms	2968 KB	Output is correct
17	Correct	5 ms	2968 KB	Output is correct
18	Correct	4 ms	2968 KB	Output is correct
19	Correct	4 ms	2968 KB	Output is correct
20	Correct	4 ms	2968 KB	Output is correct
21	Correct	4 ms	2968 KB	Output is correct
22	Correct	4 ms	3076 KB	Output is correct
23	Correct	4 ms	3076 KB	Output is correct
24	Correct	5 ms	3076 KB	Output is correct
25	Correct	4 ms	3076 KB	Output is correct
26	Correct	4 ms	3076 KB	Output is correct
27	Correct	3 ms	3076 KB	Output is correct
28	Correct	5 ms	3076 KB	Output is correct
29	Correct	4 ms	3076 KB	Output is correct
30	Correct	4 ms	3076 KB	Output is correct
31	Correct	4 ms	3076 KB	Output is correct
32	Correct	4 ms	3076 KB	Output is correct
33	Correct	5 ms	3076 KB	Output is correct
34	Correct	4 ms	3076 KB	Output is correct
35	Correct	4 ms	3076 KB	Output is correct
36	Correct	4 ms	3076 KB	Output is correct
37	Correct	4 ms	3076 KB	Output is correct
38	Correct	4 ms	3076 KB	Output is correct
39	Correct	6 ms	3076 KB	Output is correct
40	Correct	5 ms	3076 KB	Output is correct
41	Correct	6 ms	3076 KB	Output is correct
42	Correct	5 ms	3076 KB	Output is correct
43	Correct	5 ms	3076 KB	Output is correct
44	Correct	4 ms	3076 KB	Output is correct
45	Correct	4 ms	3076 KB	Output is correct
46	Correct	4 ms	3076 KB	Output is correct
47	Correct	4 ms	3076 KB	Output is correct
48	Correct	4 ms	3076 KB	Output is correct
49	Correct	4 ms	3076 KB	Output is correct
50	Correct	4 ms	3076 KB	Output is correct
51	Correct	5 ms	3076 KB	Output is correct
52	Correct	5 ms	3076 KB	Output is correct
53	Correct	4 ms	3076 KB	Output is correct
54	Correct	4 ms	3076 KB	Output is correct
55	Correct	5 ms	3076 KB	Output is correct
56	Correct	4 ms	3076 KB	Output is correct
57	Correct	4 ms	3076 KB	Output is correct
58	Correct	6 ms	3076 KB	Output is correct
59	Correct	5 ms	3076 KB	Output is correct
60	Correct	4 ms	3076 KB	Output is correct
61	Correct	5 ms	3076 KB	Output is correct
62	Correct	4 ms	3076 KB	Output is correct
63	Correct	5 ms	3076 KB	Output is correct
64	Correct	4 ms	3076 KB	Output is correct
65	Correct	4 ms	3076 KB	Output is correct
66	Correct	4 ms	3076 KB	Output is correct
67	Correct	5 ms	3076 KB	Output is correct
68	Correct	5 ms	3076 KB	Output is correct
69	Correct	5 ms	3076 KB	Output is correct
70	Correct	6 ms	3076 KB	Output is correct
71	Correct	4 ms	3076 KB	Output is correct
72	Correct	3 ms	3076 KB	Output is correct
73	Correct	4 ms	3076 KB	Output is correct
74	Correct	4 ms	3076 KB	Output is correct
75	Correct	5 ms	3076 KB	Output is correct
76	Correct	4 ms	3076 KB	Output is correct
77	Correct	5 ms	3076 KB	Output is correct
78	Correct	4 ms	3076 KB	Output is correct
79	Correct	5 ms	3076 KB	Output is correct
80	Correct	4 ms	3076 KB	Output is correct
81	Correct	5 ms	3076 KB	Output is correct
82	Correct	5 ms	3076 KB	Output is correct
83	Incorrect	5 ms	3076 KB	Output isn't correct
84	Halted	0 ms	0 KB	-

답안 #55842

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 0 / 30.0

Subtask #3 0 / 30.0

Subtask #4 0 / 30.0

Subtask #1
10.0 / 10.0

Subtask #2
0 / 30.0

Subtask #3
0 / 30.0

Subtask #4
0 / 30.0