#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];
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];
for (int i=0, j=1; ; chk[j]=1, i++, j=A[j]) if (chk[j]) {
if (i>=N) { puts("0"); return 0; }
else break;
}chk_init;
for (int i=1; i<=N; i++) if (!chk[i]) {
int j; for (j=i; !chk[j]; j=A[j]) chk[j]=i;
if (chk[j]==i) for (; chk[j]!=-1; j=A[j]) chk[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 (chk[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 (chk[i]==-1) {
mx=-(1ll<<60);
for (int j=i; chk[j]; j=A[j]) {
mx=max(mx, M2[j]-M1[j]);
chk[j]++;
}
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 |
764 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 |
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 |
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 |
5 ms |
764 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 |
760 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 |
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 |
6 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 |
7 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 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
760 KB |
Output is correct |
2 |
Correct |
5 ms |
764 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 |
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 |
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 |
5 ms |
764 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 |
760 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 |
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 |
6 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 |
7 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 |
4 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 |
760 KB |
Output is correct |
63 |
Correct |
6 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 |
764 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 |
764 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 |
764 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 |
764 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 |
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 |
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 |
5 ms |
764 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 |
760 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 |
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 |
6 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 |
7 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 |
4 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 |
760 KB |
Output is correct |
63 |
Correct |
6 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 |
764 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 |
764 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 |
764 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 |
764 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 |
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 |
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 |
5 ms |
764 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 |
760 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 |
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 |
6 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 |
7 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 |
4 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 |
760 KB |
Output is correct |
63 |
Correct |
6 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 |
764 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 |
764 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 |
764 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 |
- |