oj.uz

답안 #152295

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
152295 2019-09-07T05:41:36 Z arnold518 Telegraph (JOI16_telegraph) C++14
10 / 100
 15 ms 3192 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 1e5;

int N, A[MAXN+10], C[MAXN+10];
ll S, val, ans;

vector<int> adj[MAXN+10];
int out[MAXN+10];

int vis[MAXN+10];

vector<vector<int>> cyc;
vector<int> ST;
void dfs(int now)
{
    vis[now]=1; ST.push_back(now);
    if(out[now]==-1) { vis[now]=2; ST.pop_back(); return; }
    if(vis[out[now]]==1) cyc.push_back(ST);
    if(vis[out[now]]==0) dfs(out[now]);
    vis[now]=2; ST.pop_back();
}

int main()
{
    int i, j;

    scanf("%d", &N);
    for(i=1; i<=N; i++)
    {
        scanf("%d%lld", &A[i], &C[i]);
        adj[A[i]].push_back(i);
        S+=C[i];
    }

    memset(vis, 0, sizeof(vis));
    for(i=1; !vis[i]; i=A[i]) vis[i]=1;
    bool flag=true;
    for(i=1; i<=N; i++) flag=flag&&vis[i];
    if(flag) return !printf("0");

    for(i=1; i<=N; i++)
    {
        sort(adj[i].begin(), adj[i].end(), [&](const int &p, const int &q) { return C[p]>C[q]; });
        if(adj[i].empty()) out[i]=-1;
        else out[i]=adj[i][0], val+=C[out[i]];
    }

    memset(vis, 0, sizeof(vis));
    for(i=1; i<=N; i++) if(vis[i]==0) dfs(i);
    if(cyc.empty()) return !printf("%lld", S-val);

    for(auto &it : cyc)
    {
        ll now=-1e15;
        for(auto &jt : it)
        {
            if(adj[jt].size()==1) now=max(now, -(ll)C[adj[jt][0]]);
            else now=max(now, -(ll)C[adj[jt][0]]+C[adj[jt][1]]);
        }
        val+=now;
    }
    printf("%lld", S-val);
}

Compilation message

telegraph.cpp: In function 'int main()':
telegraph.cpp:36:37: warning: format '%lld' expects argument of type 'long long int*', but argument 3 has type 'int*' [-Wformat=]
         scanf("%d%lld", &A[i], &C[i]);
                                ~~~~~^
telegraph.cpp:31:12: warning: unused variable 'j' [-Wunused-variable]
     int i, j;
            ^
telegraph.cpp:33:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &N);
     ~~~~~^~~~~~~~~~
telegraph.cpp:36:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%lld", &A[i], &C[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 3064 KB Output is correct
2 Correct 6 ms 3192 KB Output is correct
3 Correct 15 ms 3064 KB Output is correct
4 Correct 6 ms 3064 KB Output is correct
5 Correct 5 ms 3100 KB Output is correct
6 Correct 5 ms 3064 KB Output is correct
7 Correct 5 ms 3064 KB Output is correct
8 Correct 5 ms 3068 KB Output is correct
9 Correct 5 ms 3064 KB Output is correct
10 Correct 4 ms 3064 KB Output is correct
11 Correct 5 ms 3064 KB Output is correct
12 Correct 5 ms 3064 KB Output is correct
13 Correct 4 ms 3064 KB Output is correct
14 Correct 5 ms 3064 KB Output is correct
15 Correct 4 ms 3064 KB Output is correct
16 Correct 5 ms 3064 KB Output is correct
17 Correct 4 ms 3068 KB Output is correct
18 Correct 5 ms 3064 KB Output is correct
19 Correct 5 ms 3192 KB Output is correct
20 Correct 5 ms 3064 KB Output is correct
21 Correct 5 ms 3064 KB Output is correct
22 Correct 5 ms 3064 KB Output is correct
23 Correct 5 ms 3064 KB Output is correct
24 Correct 5 ms 3064 KB Output is correct
25 Correct 4 ms 3064 KB Output is correct
26 Correct 5 ms 3064 KB Output is correct
27 Correct 4 ms 3104 KB Output is correct
28 Correct 5 ms 3064 KB Output is correct
29 Correct 4 ms 3064 KB Output is correct
30 Correct 5 ms 3064 KB Output is correct
31 Correct 4 ms 3064 KB Output is correct
32 Correct 5 ms 3064 KB Output is correct
33 Correct 5 ms 3068 KB Output is correct
34 Correct 4 ms 3064 KB Output is correct
35 Correct 4 ms 3060 KB Output is correct
36 Correct 5 ms 3064 KB Output is correct
37 Correct 4 ms 3064 KB Output is correct
38 Correct 5 ms 3064 KB Output is correct
39 Correct 5 ms 3064 KB Output is correct
40 Correct 5 ms 3064 KB Output is correct
41 Correct 5 ms 3064 KB Output is correct
42 Correct 5 ms 3068 KB Output is correct
43 Correct 5 ms 3064 KB Output is correct
44 Correct 5 ms 3064 KB Output is correct
45 Correct 4 ms 3064 KB Output is correct
46 Correct 5 ms 3064 KB Output is correct
47 Correct 5 ms 3064 KB Output is correct
48 Correct 5 ms 3192 KB Output is correct

Subtask #2
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 3064 KB Output is correct
2 Correct 6 ms 3192 KB Output is correct
3 Correct 15 ms 3064 KB Output is correct
4 Correct 6 ms 3064 KB Output is correct
5 Correct 5 ms 3100 KB Output is correct
6 Correct 5 ms 3064 KB Output is correct
7 Correct 5 ms 3064 KB Output is correct
8 Correct 5 ms 3068 KB Output is correct
9 Correct 5 ms 3064 KB Output is correct
10 Correct 4 ms 3064 KB Output is correct
11 Correct 5 ms 3064 KB Output is correct
12 Correct 5 ms 3064 KB Output is correct
13 Correct 4 ms 3064 KB Output is correct
14 Correct 5 ms 3064 KB Output is correct
15 Correct 4 ms 3064 KB Output is correct
16 Correct 5 ms 3064 KB Output is correct
17 Correct 4 ms 3068 KB Output is correct
18 Correct 5 ms 3064 KB Output is correct
19 Correct 5 ms 3192 KB Output is correct
20 Correct 5 ms 3064 KB Output is correct
21 Correct 5 ms 3064 KB Output is correct
22 Correct 5 ms 3064 KB Output is correct
23 Correct 5 ms 3064 KB Output is correct
24 Correct 5 ms 3064 KB Output is correct
25 Correct 4 ms 3064 KB Output is correct
26 Correct 5 ms 3064 KB Output is correct
27 Correct 4 ms 3104 KB Output is correct
28 Correct 5 ms 3064 KB Output is correct
29 Correct 4 ms 3064 KB Output is correct
30 Correct 5 ms 3064 KB Output is correct
31 Correct 4 ms 3064 KB Output is correct
32 Correct 5 ms 3064 KB Output is correct
33 Correct 5 ms 3068 KB Output is correct
34 Correct 4 ms 3064 KB Output is correct
35 Correct 4 ms 3060 KB Output is correct
36 Correct 5 ms 3064 KB Output is correct
37 Correct 4 ms 3064 KB Output is correct
38 Correct 5 ms 3064 KB Output is correct
39 Correct 5 ms 3064 KB Output is correct
40 Correct 5 ms 3064 KB Output is correct
41 Correct 5 ms 3064 KB Output is correct
42 Correct 5 ms 3068 KB Output is correct
43 Correct 5 ms 3064 KB Output is correct
44 Correct 5 ms 3064 KB Output is correct
45 Correct 4 ms 3064 KB Output is correct
46 Correct 5 ms 3064 KB Output is correct
47 Correct 5 ms 3064 KB Output is correct
48 Correct 5 ms 3192 KB Output is correct
49 Correct 5 ms 3064 KB Output is correct
50 Correct 5 ms 3064 KB Output is correct
51 Correct 5 ms 3064 KB Output is correct
52 Correct 4 ms 3064 KB Output is correct
53 Correct 4 ms 3064 KB Output is correct
54 Correct 5 ms 3064 KB Output is correct
55 Correct 5 ms 3064 KB Output is correct
56 Correct 5 ms 3064 KB Output is correct
57 Correct 4 ms 3064 KB Output is correct
58 Correct 5 ms 3064 KB Output is correct
59 Correct 5 ms 3064 KB Output is correct
60 Correct 5 ms 3068 KB Output is correct
61 Correct 5 ms 3064 KB Output is correct
62 Correct 5 ms 3064 KB Output is correct
63 Correct 5 ms 3064 KB Output is correct
64 Correct 5 ms 3064 KB Output is correct
65 Correct 4 ms 3064 KB Output is correct
66 Correct 4 ms 3064 KB Output is correct
67 Correct 5 ms 3064 KB Output is correct
68 Correct 5 ms 3064 KB Output is correct
69 Correct 5 ms 3064 KB Output is correct
70 Correct 5 ms 3064 KB Output is correct
71 Correct 5 ms 3192 KB Output is correct
72 Correct 5 ms 3064 KB Output is correct
73 Correct 5 ms 3064 KB Output is correct
74 Correct 5 ms 3064 KB Output is correct
75 Correct 5 ms 3064 KB Output is correct
76 Correct 5 ms 3036 KB Output is correct
77 Correct 5 ms 3064 KB Output is correct
78 Correct 6 ms 3068 KB Output is correct
79 Correct 5 ms 3064 KB Output is correct
80 Correct 5 ms 3064 KB Output is correct
81 Correct 5 ms 3064 KB Output is correct
82 Correct 5 ms 3064 KB Output is correct
83 Incorrect 5 ms 3064 KB Output isn't correct
84 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 3064 KB Output is correct
2 Correct 6 ms 3192 KB Output is correct
3 Correct 15 ms 3064 KB Output is correct
4 Correct 6 ms 3064 KB Output is correct
5 Correct 5 ms 3100 KB Output is correct
6 Correct 5 ms 3064 KB Output is correct
7 Correct 5 ms 3064 KB Output is correct
8 Correct 5 ms 3068 KB Output is correct
9 Correct 5 ms 3064 KB Output is correct
10 Correct 4 ms 3064 KB Output is correct
11 Correct 5 ms 3064 KB Output is correct
12 Correct 5 ms 3064 KB Output is correct
13 Correct 4 ms 3064 KB Output is correct
14 Correct 5 ms 3064 KB Output is correct
15 Correct 4 ms 3064 KB Output is correct
16 Correct 5 ms 3064 KB Output is correct
17 Correct 4 ms 3068 KB Output is correct
18 Correct 5 ms 3064 KB Output is correct
19 Correct 5 ms 3192 KB Output is correct
20 Correct 5 ms 3064 KB Output is correct
21 Correct 5 ms 3064 KB Output is correct
22 Correct 5 ms 3064 KB Output is correct
23 Correct 5 ms 3064 KB Output is correct
24 Correct 5 ms 3064 KB Output is correct
25 Correct 4 ms 3064 KB Output is correct
26 Correct 5 ms 3064 KB Output is correct
27 Correct 4 ms 3104 KB Output is correct
28 Correct 5 ms 3064 KB Output is correct
29 Correct 4 ms 3064 KB Output is correct
30 Correct 5 ms 3064 KB Output is correct
31 Correct 4 ms 3064 KB Output is correct
32 Correct 5 ms 3064 KB Output is correct
33 Correct 5 ms 3068 KB Output is correct
34 Correct 4 ms 3064 KB Output is correct
35 Correct 4 ms 3060 KB Output is correct
36 Correct 5 ms 3064 KB Output is correct
37 Correct 4 ms 3064 KB Output is correct
38 Correct 5 ms 3064 KB Output is correct
39 Correct 5 ms 3064 KB Output is correct
40 Correct 5 ms 3064 KB Output is correct
41 Correct 5 ms 3064 KB Output is correct
42 Correct 5 ms 3068 KB Output is correct
43 Correct 5 ms 3064 KB Output is correct
44 Correct 5 ms 3064 KB Output is correct
45 Correct 4 ms 3064 KB Output is correct
46 Correct 5 ms 3064 KB Output is correct
47 Correct 5 ms 3064 KB Output is correct
48 Correct 5 ms 3192 KB Output is correct
49 Correct 5 ms 3064 KB Output is correct
50 Correct 5 ms 3064 KB Output is correct
51 Correct 5 ms 3064 KB Output is correct
52 Correct 4 ms 3064 KB Output is correct
53 Correct 4 ms 3064 KB Output is correct
54 Correct 5 ms 3064 KB Output is correct
55 Correct 5 ms 3064 KB Output is correct
56 Correct 5 ms 3064 KB Output is correct
57 Correct 4 ms 3064 KB Output is correct
58 Correct 5 ms 3064 KB Output is correct
59 Correct 5 ms 3064 KB Output is correct
60 Correct 5 ms 3068 KB Output is correct
61 Correct 5 ms 3064 KB Output is correct
62 Correct 5 ms 3064 KB Output is correct
63 Correct 5 ms 3064 KB Output is correct
64 Correct 5 ms 3064 KB Output is correct
65 Correct 4 ms 3064 KB Output is correct
66 Correct 4 ms 3064 KB Output is correct
67 Correct 5 ms 3064 KB Output is correct
68 Correct 5 ms 3064 KB Output is correct
69 Correct 5 ms 3064 KB Output is correct
70 Correct 5 ms 3064 KB Output is correct
71 Correct 5 ms 3192 KB Output is correct
72 Correct 5 ms 3064 KB Output is correct
73 Correct 5 ms 3064 KB Output is correct
74 Correct 5 ms 3064 KB Output is correct
75 Correct 5 ms 3064 KB Output is correct
76 Correct 5 ms 3036 KB Output is correct
77 Correct 5 ms 3064 KB Output is correct
78 Correct 6 ms 3068 KB Output is correct
79 Correct 5 ms 3064 KB Output is correct
80 Correct 5 ms 3064 KB Output is correct
81 Correct 5 ms 3064 KB Output is correct
82 Correct 5 ms 3064 KB Output is correct
83 Incorrect 5 ms 3064 KB Output isn't correct
84 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 3064 KB Output is correct
2 Correct 6 ms 3192 KB Output is correct
3 Correct 15 ms 3064 KB Output is correct
4 Correct 6 ms 3064 KB Output is correct
5 Correct 5 ms 3100 KB Output is correct
6 Correct 5 ms 3064 KB Output is correct
7 Correct 5 ms 3064 KB Output is correct
8 Correct 5 ms 3068 KB Output is correct
9 Correct 5 ms 3064 KB Output is correct
10 Correct 4 ms 3064 KB Output is correct
11 Correct 5 ms 3064 KB Output is correct
12 Correct 5 ms 3064 KB Output is correct
13 Correct 4 ms 3064 KB Output is correct
14 Correct 5 ms 3064 KB Output is correct
15 Correct 4 ms 3064 KB Output is correct
16 Correct 5 ms 3064 KB Output is correct
17 Correct 4 ms 3068 KB Output is correct
18 Correct 5 ms 3064 KB Output is correct
19 Correct 5 ms 3192 KB Output is correct
20 Correct 5 ms 3064 KB Output is correct
21 Correct 5 ms 3064 KB Output is correct
22 Correct 5 ms 3064 KB Output is correct
23 Correct 5 ms 3064 KB Output is correct
24 Correct 5 ms 3064 KB Output is correct
25 Correct 4 ms 3064 KB Output is correct
26 Correct 5 ms 3064 KB Output is correct
27 Correct 4 ms 3104 KB Output is correct
28 Correct 5 ms 3064 KB Output is correct
29 Correct 4 ms 3064 KB Output is correct
30 Correct 5 ms 3064 KB Output is correct
31 Correct 4 ms 3064 KB Output is correct
32 Correct 5 ms 3064 KB Output is correct
33 Correct 5 ms 3068 KB Output is correct
34 Correct 4 ms 3064 KB Output is correct
35 Correct 4 ms 3060 KB Output is correct
36 Correct 5 ms 3064 KB Output is correct
37 Correct 4 ms 3064 KB Output is correct
38 Correct 5 ms 3064 KB Output is correct
39 Correct 5 ms 3064 KB Output is correct
40 Correct 5 ms 3064 KB Output is correct
41 Correct 5 ms 3064 KB Output is correct
42 Correct 5 ms 3068 KB Output is correct
43 Correct 5 ms 3064 KB Output is correct
44 Correct 5 ms 3064 KB Output is correct
45 Correct 4 ms 3064 KB Output is correct
46 Correct 5 ms 3064 KB Output is correct
47 Correct 5 ms 3064 KB Output is correct
48 Correct 5 ms 3192 KB Output is correct
49 Correct 5 ms 3064 KB Output is correct
50 Correct 5 ms 3064 KB Output is correct
51 Correct 5 ms 3064 KB Output is correct
52 Correct 4 ms 3064 KB Output is correct
53 Correct 4 ms 3064 KB Output is correct
54 Correct 5 ms 3064 KB Output is correct
55 Correct 5 ms 3064 KB Output is correct
56 Correct 5 ms 3064 KB Output is correct
57 Correct 4 ms 3064 KB Output is correct
58 Correct 5 ms 3064 KB Output is correct
59 Correct 5 ms 3064 KB Output is correct
60 Correct 5 ms 3068 KB Output is correct
61 Correct 5 ms 3064 KB Output is correct
62 Correct 5 ms 3064 KB Output is correct
63 Correct 5 ms 3064 KB Output is correct
64 Correct 5 ms 3064 KB Output is correct
65 Correct 4 ms 3064 KB Output is correct
66 Correct 4 ms 3064 KB Output is correct
67 Correct 5 ms 3064 KB Output is correct
68 Correct 5 ms 3064 KB Output is correct
69 Correct 5 ms 3064 KB Output is correct
70 Correct 5 ms 3064 KB Output is correct
71 Correct 5 ms 3192 KB Output is correct
72 Correct 5 ms 3064 KB Output is correct
73 Correct 5 ms 3064 KB Output is correct
74 Correct 5 ms 3064 KB Output is correct
75 Correct 5 ms 3064 KB Output is correct
76 Correct 5 ms 3036 KB Output is correct
77 Correct 5 ms 3064 KB Output is correct
78 Correct 6 ms 3068 KB Output is correct
79 Correct 5 ms 3064 KB Output is correct
80 Correct 5 ms 3064 KB Output is correct
81 Correct 5 ms 3064 KB Output is correct
82 Correct 5 ms 3064 KB Output is correct
83 Incorrect 5 ms 3064 KB Output isn't correct
84 Halted 0 ms 0 KB -