Submission #199090

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
199090	2020-01-29T07:59:27 Z	dennisstar	Telegraph (JOI16_telegraph)	C++17	10 / 100	6 ms	792 KB

telegraph

#include <bits/stdc++.h>
#define fi first
#define se second
#define em emplace
#define eb emplace_back
#define sq(X) ((X)*(X))
#define all(V) (V).begin(), (V).end()
#define chk_init memset(chk, 0, sizeof(chk))
#define unq(V) (V).erase(unique(all(V)), (V).end())
using namespace std;
typedef long long ll;
typedef vector<ll> vlm;
typedef vector<int> vim;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;

int N, A[100010], chk[100010], cy[100010];
ll C[100010], S, ans, M1[100010], M2[100010];

int main() {
	scanf("%d", &N);
	for (int i=1; i<=N; i++) scanf("%d %lld", &A[i], &C[i]), S+=C[i];

	int cnt=0;
	for (int i=1; chk[i]==0; i=A[i]) chk[i]=1, cnt++;
	if (cnt==N) { puts("0"); return 0; }
	chk_init;

	for (int i=1; i<=N; i++) if (chk[i]==0) {
		int j; for (j=i; chk[j]==0; j=A[j]) chk[j]=i;
		if (chk[j]==i) for (; cy[j]==0; j=A[j]) cy[j]=1;
	}

	for (int i=1; i<=N; i++) M1[A[i]]=max(M1[A[i]], C[i]);
	for (int i=1; i<=N; i++) if (!cy[i]) M2[A[i]]=max(M2[A[i]], C[i]);

	ll mx;
	for (int i=1; i<=N; i++) {
		ans+=M1[i];
		if (cy[i]) {
			mx=M2[i]-M1[i];
			for (int j=i; cy[j]==1; j=A[j]) {
				mx=max(mx, M2[j]-M1[j]);
				cy[j]=0;
			}
			ans+=mx;
		}
	}
	printf("%lld\n", S-ans);
	return 0;
}

Compilation message

telegraph.cpp: In function 'int main()':
telegraph.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
telegraph.cpp:22:57: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i=1; i<=N; i++) scanf("%d %lld", &A[i], &C[i]), S+=C[i];
                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	632 KB	Output is correct
2	Correct	5 ms	760 KB	Output is correct
3	Correct	5 ms	760 KB	Output is correct
4	Correct	5 ms	760 KB	Output is correct
5	Correct	5 ms	760 KB	Output is correct
6	Correct	5 ms	376 KB	Output is correct
7	Correct	5 ms	376 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	5 ms	380 KB	Output is correct
10	Correct	5 ms	504 KB	Output is correct
11	Correct	5 ms	760 KB	Output is correct
12	Correct	6 ms	760 KB	Output is correct
13	Correct	5 ms	760 KB	Output is correct
14	Correct	5 ms	760 KB	Output is correct
15	Correct	5 ms	760 KB	Output is correct
16	Correct	6 ms	760 KB	Output is correct
17	Correct	5 ms	760 KB	Output is correct
18	Correct	5 ms	760 KB	Output is correct
19	Correct	5 ms	760 KB	Output is correct
20	Correct	5 ms	760 KB	Output is correct
21	Correct	5 ms	760 KB	Output is correct
22	Correct	5 ms	760 KB	Output is correct
23	Correct	5 ms	760 KB	Output is correct
24	Correct	5 ms	760 KB	Output is correct
25	Correct	6 ms	760 KB	Output is correct
26	Correct	5 ms	760 KB	Output is correct
27	Correct	5 ms	764 KB	Output is correct
28	Correct	5 ms	760 KB	Output is correct
29	Correct	5 ms	760 KB	Output is correct
30	Correct	5 ms	760 KB	Output is correct
31	Correct	5 ms	764 KB	Output is correct
32	Correct	5 ms	760 KB	Output is correct
33	Correct	5 ms	760 KB	Output is correct
34	Correct	5 ms	760 KB	Output is correct
35	Correct	5 ms	760 KB	Output is correct
36	Correct	5 ms	760 KB	Output is correct
37	Correct	5 ms	760 KB	Output is correct
38	Correct	5 ms	760 KB	Output is correct
39	Correct	5 ms	764 KB	Output is correct
40	Correct	5 ms	760 KB	Output is correct
41	Correct	5 ms	760 KB	Output is correct
42	Correct	5 ms	760 KB	Output is correct
43	Correct	5 ms	760 KB	Output is correct
44	Correct	5 ms	760 KB	Output is correct
45	Correct	5 ms	760 KB	Output is correct
46	Correct	5 ms	376 KB	Output is correct
47	Correct	5 ms	376 KB	Output is correct
48	Correct	5 ms	376 KB	Output is correct

Subtask #2
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	632 KB	Output is correct
2	Correct	5 ms	760 KB	Output is correct
3	Correct	5 ms	760 KB	Output is correct
4	Correct	5 ms	760 KB	Output is correct
5	Correct	5 ms	760 KB	Output is correct
6	Correct	5 ms	376 KB	Output is correct
7	Correct	5 ms	376 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	5 ms	380 KB	Output is correct
10	Correct	5 ms	504 KB	Output is correct
11	Correct	5 ms	760 KB	Output is correct
12	Correct	6 ms	760 KB	Output is correct
13	Correct	5 ms	760 KB	Output is correct
14	Correct	5 ms	760 KB	Output is correct
15	Correct	5 ms	760 KB	Output is correct
16	Correct	6 ms	760 KB	Output is correct
17	Correct	5 ms	760 KB	Output is correct
18	Correct	5 ms	760 KB	Output is correct
19	Correct	5 ms	760 KB	Output is correct
20	Correct	5 ms	760 KB	Output is correct
21	Correct	5 ms	760 KB	Output is correct
22	Correct	5 ms	760 KB	Output is correct
23	Correct	5 ms	760 KB	Output is correct
24	Correct	5 ms	760 KB	Output is correct
25	Correct	6 ms	760 KB	Output is correct
26	Correct	5 ms	760 KB	Output is correct
27	Correct	5 ms	764 KB	Output is correct
28	Correct	5 ms	760 KB	Output is correct
29	Correct	5 ms	760 KB	Output is correct
30	Correct	5 ms	760 KB	Output is correct
31	Correct	5 ms	764 KB	Output is correct
32	Correct	5 ms	760 KB	Output is correct
33	Correct	5 ms	760 KB	Output is correct
34	Correct	5 ms	760 KB	Output is correct
35	Correct	5 ms	760 KB	Output is correct
36	Correct	5 ms	760 KB	Output is correct
37	Correct	5 ms	760 KB	Output is correct
38	Correct	5 ms	760 KB	Output is correct
39	Correct	5 ms	764 KB	Output is correct
40	Correct	5 ms	760 KB	Output is correct
41	Correct	5 ms	760 KB	Output is correct
42	Correct	5 ms	760 KB	Output is correct
43	Correct	5 ms	760 KB	Output is correct
44	Correct	5 ms	760 KB	Output is correct
45	Correct	5 ms	760 KB	Output is correct
46	Correct	5 ms	376 KB	Output is correct
47	Correct	5 ms	376 KB	Output is correct
48	Correct	5 ms	376 KB	Output is correct
49	Correct	5 ms	760 KB	Output is correct
50	Correct	5 ms	760 KB	Output is correct
51	Correct	5 ms	760 KB	Output is correct
52	Correct	5 ms	760 KB	Output is correct
53	Correct	5 ms	760 KB	Output is correct
54	Correct	5 ms	376 KB	Output is correct
55	Correct	5 ms	376 KB	Output is correct
56	Correct	5 ms	376 KB	Output is correct
57	Correct	5 ms	376 KB	Output is correct
58	Correct	5 ms	376 KB	Output is correct
59	Correct	5 ms	760 KB	Output is correct
60	Correct	5 ms	760 KB	Output is correct
61	Correct	5 ms	760 KB	Output is correct
62	Correct	5 ms	792 KB	Output is correct
63	Correct	5 ms	632 KB	Output is correct
64	Correct	5 ms	764 KB	Output is correct
65	Correct	5 ms	760 KB	Output is correct
66	Correct	5 ms	760 KB	Output is correct
67	Correct	5 ms	760 KB	Output is correct
68	Correct	5 ms	760 KB	Output is correct
69	Correct	5 ms	760 KB	Output is correct
70	Correct	5 ms	760 KB	Output is correct
71	Correct	5 ms	760 KB	Output is correct
72	Correct	5 ms	760 KB	Output is correct
73	Correct	5 ms	764 KB	Output is correct
74	Correct	5 ms	760 KB	Output is correct
75	Correct	5 ms	760 KB	Output is correct
76	Correct	5 ms	760 KB	Output is correct
77	Correct	6 ms	760 KB	Output is correct
78	Correct	5 ms	760 KB	Output is correct
79	Correct	5 ms	760 KB	Output is correct
80	Correct	5 ms	760 KB	Output is correct
81	Correct	5 ms	760 KB	Output is correct
82	Correct	5 ms	760 KB	Output is correct
83	Incorrect	5 ms	376 KB	Output isn't correct
84	Halted	0 ms	0 KB	-

Subtask #3
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	632 KB	Output is correct
2	Correct	5 ms	760 KB	Output is correct
3	Correct	5 ms	760 KB	Output is correct
4	Correct	5 ms	760 KB	Output is correct
5	Correct	5 ms	760 KB	Output is correct
6	Correct	5 ms	376 KB	Output is correct
7	Correct	5 ms	376 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	5 ms	380 KB	Output is correct
10	Correct	5 ms	504 KB	Output is correct
11	Correct	5 ms	760 KB	Output is correct
12	Correct	6 ms	760 KB	Output is correct
13	Correct	5 ms	760 KB	Output is correct
14	Correct	5 ms	760 KB	Output is correct
15	Correct	5 ms	760 KB	Output is correct
16	Correct	6 ms	760 KB	Output is correct
17	Correct	5 ms	760 KB	Output is correct
18	Correct	5 ms	760 KB	Output is correct
19	Correct	5 ms	760 KB	Output is correct
20	Correct	5 ms	760 KB	Output is correct
21	Correct	5 ms	760 KB	Output is correct
22	Correct	5 ms	760 KB	Output is correct
23	Correct	5 ms	760 KB	Output is correct
24	Correct	5 ms	760 KB	Output is correct
25	Correct	6 ms	760 KB	Output is correct
26	Correct	5 ms	760 KB	Output is correct
27	Correct	5 ms	764 KB	Output is correct
28	Correct	5 ms	760 KB	Output is correct
29	Correct	5 ms	760 KB	Output is correct
30	Correct	5 ms	760 KB	Output is correct
31	Correct	5 ms	764 KB	Output is correct
32	Correct	5 ms	760 KB	Output is correct
33	Correct	5 ms	760 KB	Output is correct
34	Correct	5 ms	760 KB	Output is correct
35	Correct	5 ms	760 KB	Output is correct
36	Correct	5 ms	760 KB	Output is correct
37	Correct	5 ms	760 KB	Output is correct
38	Correct	5 ms	760 KB	Output is correct
39	Correct	5 ms	764 KB	Output is correct
40	Correct	5 ms	760 KB	Output is correct
41	Correct	5 ms	760 KB	Output is correct
42	Correct	5 ms	760 KB	Output is correct
43	Correct	5 ms	760 KB	Output is correct
44	Correct	5 ms	760 KB	Output is correct
45	Correct	5 ms	760 KB	Output is correct
46	Correct	5 ms	376 KB	Output is correct
47	Correct	5 ms	376 KB	Output is correct
48	Correct	5 ms	376 KB	Output is correct
49	Correct	5 ms	760 KB	Output is correct
50	Correct	5 ms	760 KB	Output is correct
51	Correct	5 ms	760 KB	Output is correct
52	Correct	5 ms	760 KB	Output is correct
53	Correct	5 ms	760 KB	Output is correct
54	Correct	5 ms	376 KB	Output is correct
55	Correct	5 ms	376 KB	Output is correct
56	Correct	5 ms	376 KB	Output is correct
57	Correct	5 ms	376 KB	Output is correct
58	Correct	5 ms	376 KB	Output is correct
59	Correct	5 ms	760 KB	Output is correct
60	Correct	5 ms	760 KB	Output is correct
61	Correct	5 ms	760 KB	Output is correct
62	Correct	5 ms	792 KB	Output is correct
63	Correct	5 ms	632 KB	Output is correct
64	Correct	5 ms	764 KB	Output is correct
65	Correct	5 ms	760 KB	Output is correct
66	Correct	5 ms	760 KB	Output is correct
67	Correct	5 ms	760 KB	Output is correct
68	Correct	5 ms	760 KB	Output is correct
69	Correct	5 ms	760 KB	Output is correct
70	Correct	5 ms	760 KB	Output is correct
71	Correct	5 ms	760 KB	Output is correct
72	Correct	5 ms	760 KB	Output is correct
73	Correct	5 ms	764 KB	Output is correct
74	Correct	5 ms	760 KB	Output is correct
75	Correct	5 ms	760 KB	Output is correct
76	Correct	5 ms	760 KB	Output is correct
77	Correct	6 ms	760 KB	Output is correct
78	Correct	5 ms	760 KB	Output is correct
79	Correct	5 ms	760 KB	Output is correct
80	Correct	5 ms	760 KB	Output is correct
81	Correct	5 ms	760 KB	Output is correct
82	Correct	5 ms	760 KB	Output is correct
83	Incorrect	5 ms	376 KB	Output isn't correct
84	Halted	0 ms	0 KB	-

Subtask #4
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	632 KB	Output is correct
2	Correct	5 ms	760 KB	Output is correct
3	Correct	5 ms	760 KB	Output is correct
4	Correct	5 ms	760 KB	Output is correct
5	Correct	5 ms	760 KB	Output is correct
6	Correct	5 ms	376 KB	Output is correct
7	Correct	5 ms	376 KB	Output is correct
8	Correct	5 ms	376 KB	Output is correct
9	Correct	5 ms	380 KB	Output is correct
10	Correct	5 ms	504 KB	Output is correct
11	Correct	5 ms	760 KB	Output is correct
12	Correct	6 ms	760 KB	Output is correct
13	Correct	5 ms	760 KB	Output is correct
14	Correct	5 ms	760 KB	Output is correct
15	Correct	5 ms	760 KB	Output is correct
16	Correct	6 ms	760 KB	Output is correct
17	Correct	5 ms	760 KB	Output is correct
18	Correct	5 ms	760 KB	Output is correct
19	Correct	5 ms	760 KB	Output is correct
20	Correct	5 ms	760 KB	Output is correct
21	Correct	5 ms	760 KB	Output is correct
22	Correct	5 ms	760 KB	Output is correct
23	Correct	5 ms	760 KB	Output is correct
24	Correct	5 ms	760 KB	Output is correct
25	Correct	6 ms	760 KB	Output is correct
26	Correct	5 ms	760 KB	Output is correct
27	Correct	5 ms	764 KB	Output is correct
28	Correct	5 ms	760 KB	Output is correct
29	Correct	5 ms	760 KB	Output is correct
30	Correct	5 ms	760 KB	Output is correct
31	Correct	5 ms	764 KB	Output is correct
32	Correct	5 ms	760 KB	Output is correct
33	Correct	5 ms	760 KB	Output is correct
34	Correct	5 ms	760 KB	Output is correct
35	Correct	5 ms	760 KB	Output is correct
36	Correct	5 ms	760 KB	Output is correct
37	Correct	5 ms	760 KB	Output is correct
38	Correct	5 ms	760 KB	Output is correct
39	Correct	5 ms	764 KB	Output is correct
40	Correct	5 ms	760 KB	Output is correct
41	Correct	5 ms	760 KB	Output is correct
42	Correct	5 ms	760 KB	Output is correct
43	Correct	5 ms	760 KB	Output is correct
44	Correct	5 ms	760 KB	Output is correct
45	Correct	5 ms	760 KB	Output is correct
46	Correct	5 ms	376 KB	Output is correct
47	Correct	5 ms	376 KB	Output is correct
48	Correct	5 ms	376 KB	Output is correct
49	Correct	5 ms	760 KB	Output is correct
50	Correct	5 ms	760 KB	Output is correct
51	Correct	5 ms	760 KB	Output is correct
52	Correct	5 ms	760 KB	Output is correct
53	Correct	5 ms	760 KB	Output is correct
54	Correct	5 ms	376 KB	Output is correct
55	Correct	5 ms	376 KB	Output is correct
56	Correct	5 ms	376 KB	Output is correct
57	Correct	5 ms	376 KB	Output is correct
58	Correct	5 ms	376 KB	Output is correct
59	Correct	5 ms	760 KB	Output is correct
60	Correct	5 ms	760 KB	Output is correct
61	Correct	5 ms	760 KB	Output is correct
62	Correct	5 ms	792 KB	Output is correct
63	Correct	5 ms	632 KB	Output is correct
64	Correct	5 ms	764 KB	Output is correct
65	Correct	5 ms	760 KB	Output is correct
66	Correct	5 ms	760 KB	Output is correct
67	Correct	5 ms	760 KB	Output is correct
68	Correct	5 ms	760 KB	Output is correct
69	Correct	5 ms	760 KB	Output is correct
70	Correct	5 ms	760 KB	Output is correct
71	Correct	5 ms	760 KB	Output is correct
72	Correct	5 ms	760 KB	Output is correct
73	Correct	5 ms	764 KB	Output is correct
74	Correct	5 ms	760 KB	Output is correct
75	Correct	5 ms	760 KB	Output is correct
76	Correct	5 ms	760 KB	Output is correct
77	Correct	6 ms	760 KB	Output is correct
78	Correct	5 ms	760 KB	Output is correct
79	Correct	5 ms	760 KB	Output is correct
80	Correct	5 ms	760 KB	Output is correct
81	Correct	5 ms	760 KB	Output is correct
82	Correct	5 ms	760 KB	Output is correct
83	Incorrect	5 ms	376 KB	Output isn't correct
84	Halted	0 ms	0 KB	-

Submission #199090

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