답안 #199088

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
199088 2020-01-29T07:43:33 Z dennisstar Telegraph (JOI16_telegraph) C++17
10 / 100
6 ms 888 KB
#include <bits/stdc++.h>
#define fi first
#define se second
#define ryan bear
#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]==0) M2[A[i]]=max(M2[A[i]], C[i]);
	for (int i=1; i<=N; i++) ans+=M1[i];
	ll mx;
	for (int i=1; i<=N; i++) if (cy[i]) {
		mx=-(1<<30);
		for (int j=i; cy[j]!=0; 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:22:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
telegraph.cpp:23:57: 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];
                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 760 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 300 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 5 ms 764 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 5 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 5 ms 760 KB Output is correct
26 Correct 5 ms 760 KB Output is correct
27 Correct 5 ms 756 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 6 ms 760 KB Output is correct
30 Correct 5 ms 760 KB Output is correct
31 Correct 5 ms 760 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 760 KB Output is correct
40 Correct 5 ms 760 KB Output is correct
41 Correct 5 ms 760 KB Output is correct
42 Correct 6 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
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 760 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 300 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 5 ms 764 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 5 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 5 ms 760 KB Output is correct
26 Correct 5 ms 760 KB Output is correct
27 Correct 5 ms 756 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 6 ms 760 KB Output is correct
30 Correct 5 ms 760 KB Output is correct
31 Correct 5 ms 760 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 760 KB Output is correct
40 Correct 5 ms 760 KB Output is correct
41 Correct 5 ms 760 KB Output is correct
42 Correct 6 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 888 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 760 KB Output is correct
63 Correct 5 ms 760 KB Output is correct
64 Correct 5 ms 760 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 760 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 5 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 -
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 760 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 300 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 5 ms 764 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 5 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 5 ms 760 KB Output is correct
26 Correct 5 ms 760 KB Output is correct
27 Correct 5 ms 756 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 6 ms 760 KB Output is correct
30 Correct 5 ms 760 KB Output is correct
31 Correct 5 ms 760 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 760 KB Output is correct
40 Correct 5 ms 760 KB Output is correct
41 Correct 5 ms 760 KB Output is correct
42 Correct 6 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 888 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 760 KB Output is correct
63 Correct 5 ms 760 KB Output is correct
64 Correct 5 ms 760 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 760 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 5 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 -
# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 760 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 300 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 5 ms 764 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 5 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 5 ms 760 KB Output is correct
26 Correct 5 ms 760 KB Output is correct
27 Correct 5 ms 756 KB Output is correct
28 Correct 5 ms 760 KB Output is correct
29 Correct 6 ms 760 KB Output is correct
30 Correct 5 ms 760 KB Output is correct
31 Correct 5 ms 760 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 760 KB Output is correct
40 Correct 5 ms 760 KB Output is correct
41 Correct 5 ms 760 KB Output is correct
42 Correct 6 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 888 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 760 KB Output is correct
63 Correct 5 ms 760 KB Output is correct
64 Correct 5 ms 760 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 760 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 5 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 -