답안 #43764 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
43764	2018-03-23T03:01:19 Z	PowerOfNinjaGo	Network (BOI15_net)	C++14	100 / 100	665 ms	152844 KB

//Power Of Ninja Go
#include <bits/stdc++.h>
//#ifdef atom #else #endif
using namespace std;
typedef long long ll; typedef pair<int, int> ii;
#define X first
#define Y second
#define vi vector<int>
#define vii vector< ii >
#define pb push_back
const int maxn = 5e5+5;
vi adj[maxn];
vi leaf;
void dfs(int u, int p)
{
    bool found = 0;
    for(auto v : adj[u])
    {
        if(v == p) continue;
        dfs(v, u);
        found = 1;
    }
    if(!found) leaf.pb(u);
}
int main()
{
    //#ifndef atom freopen(".in", "r", stdin); freopen(".out", "w", stdout); #endif
    int n; scanf("%d", &n);
    for(int i = 0; i< n-1; i++)
    {
        int u, v; scanf("%d %d", &u, &v);
        adj[u].pb(v); adj[v].pb(u);
    }
    int s = 1;
    for(int i = 1; i<= n; i++) if(adj[i].size()> 1) s = i;
    dfs(s, 0);
    printf("%d\n", (leaf.size()+1)/2);
    int mid = (leaf.size()+1)/2;
    for(int i = 0; i< mid; i++)
    {
        printf("%d %d\n", leaf[i], leaf[min((int) leaf.size()-1, mid+i)]);
    }
}

Compilation message

net.cpp: In function 'int main()':
net.cpp:37:37: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
     printf("%d\n", (leaf.size()+1)/2);
                                     ^
net.cpp:28:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     int n; scanf("%d", &n);
                           ^
net.cpp:31:41: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int u, v; scanf("%d %d", &u, &v);
                                         ^

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	12024 KB	Output is correct
2	Correct	12 ms	12128 KB	Output is correct
3	Correct	13 ms	12200 KB	Output is correct
4	Correct	11 ms	12200 KB	Output is correct
5	Correct	10 ms	12304 KB	Output is correct
6	Correct	10 ms	12376 KB	Output is correct
7	Correct	10 ms	12376 KB	Output is correct
8	Correct	10 ms	12376 KB	Output is correct
9	Correct	10 ms	12376 KB	Output is correct
10	Correct	10 ms	12376 KB	Output is correct
11	Correct	10 ms	12376 KB	Output is correct
12	Correct	11 ms	12376 KB	Output is correct
13	Correct	11 ms	12376 KB	Output is correct
14	Correct	11 ms	12376 KB	Output is correct
15	Correct	11 ms	12376 KB	Output is correct
16	Correct	11 ms	12376 KB	Output is correct
17	Correct	11 ms	12376 KB	Output is correct
18	Correct	11 ms	12376 KB	Output is correct
19	Correct	10 ms	12376 KB	Output is correct
20	Correct	12 ms	12376 KB	Output is correct

Subtask #2
45.0 / 45.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	12024 KB	Output is correct
2	Correct	12 ms	12128 KB	Output is correct
3	Correct	13 ms	12200 KB	Output is correct
4	Correct	11 ms	12200 KB	Output is correct
5	Correct	10 ms	12304 KB	Output is correct
6	Correct	10 ms	12376 KB	Output is correct
7	Correct	10 ms	12376 KB	Output is correct
8	Correct	10 ms	12376 KB	Output is correct
9	Correct	10 ms	12376 KB	Output is correct
10	Correct	10 ms	12376 KB	Output is correct
11	Correct	10 ms	12376 KB	Output is correct
12	Correct	11 ms	12376 KB	Output is correct
13	Correct	11 ms	12376 KB	Output is correct
14	Correct	11 ms	12376 KB	Output is correct
15	Correct	11 ms	12376 KB	Output is correct
16	Correct	11 ms	12376 KB	Output is correct
17	Correct	11 ms	12376 KB	Output is correct
18	Correct	11 ms	12376 KB	Output is correct
19	Correct	10 ms	12376 KB	Output is correct
20	Correct	12 ms	12376 KB	Output is correct
21	Correct	11 ms	12376 KB	Output is correct
22	Correct	13 ms	12396 KB	Output is correct
23	Correct	11 ms	12396 KB	Output is correct
24	Correct	11 ms	12412 KB	Output is correct
25	Correct	11 ms	12412 KB	Output is correct
26	Correct	12 ms	12428 KB	Output is correct
27	Correct	13 ms	12556 KB	Output is correct
28	Correct	12 ms	12556 KB	Output is correct
29	Correct	11 ms	12556 KB	Output is correct
30	Correct	11 ms	12556 KB	Output is correct
31	Correct	12 ms	12556 KB	Output is correct
32	Correct	10 ms	12556 KB	Output is correct
33	Correct	10 ms	12556 KB	Output is correct
34	Correct	10 ms	12556 KB	Output is correct
35	Correct	9 ms	12556 KB	Output is correct
36	Correct	10 ms	12556 KB	Output is correct
37	Correct	12 ms	12556 KB	Output is correct
38	Correct	12 ms	12556 KB	Output is correct
39	Correct	10 ms	12556 KB	Output is correct
40	Correct	11 ms	12556 KB	Output is correct
41	Correct	11 ms	12556 KB	Output is correct
42	Correct	12 ms	12556 KB	Output is correct
43	Correct	11 ms	12556 KB	Output is correct
44	Correct	10 ms	12556 KB	Output is correct
45	Correct	11 ms	12556 KB	Output is correct
46	Correct	11 ms	12556 KB	Output is correct
47	Correct	11 ms	12556 KB	Output is correct
48	Correct	11 ms	12556 KB	Output is correct
49	Correct	11 ms	12556 KB	Output is correct
50	Correct	11 ms	12556 KB	Output is correct
51	Correct	11 ms	12556 KB	Output is correct
52	Correct	11 ms	12556 KB	Output is correct
53	Correct	12 ms	12556 KB	Output is correct
54	Correct	12 ms	12556 KB	Output is correct
55	Correct	11 ms	12556 KB	Output is correct
56	Correct	11 ms	12556 KB	Output is correct
57	Correct	13 ms	12556 KB	Output is correct
58	Correct	11 ms	12556 KB	Output is correct

Subtask #3
37.0 / 37.0

#	결과	실행 시간	메모리	Grader output
1	Correct	10 ms	12024 KB	Output is correct
2	Correct	12 ms	12128 KB	Output is correct
3	Correct	13 ms	12200 KB	Output is correct
4	Correct	11 ms	12200 KB	Output is correct
5	Correct	10 ms	12304 KB	Output is correct
6	Correct	10 ms	12376 KB	Output is correct
7	Correct	10 ms	12376 KB	Output is correct
8	Correct	10 ms	12376 KB	Output is correct
9	Correct	10 ms	12376 KB	Output is correct
10	Correct	10 ms	12376 KB	Output is correct
11	Correct	10 ms	12376 KB	Output is correct
12	Correct	11 ms	12376 KB	Output is correct
13	Correct	11 ms	12376 KB	Output is correct
14	Correct	11 ms	12376 KB	Output is correct
15	Correct	11 ms	12376 KB	Output is correct
16	Correct	11 ms	12376 KB	Output is correct
17	Correct	11 ms	12376 KB	Output is correct
18	Correct	11 ms	12376 KB	Output is correct
19	Correct	10 ms	12376 KB	Output is correct
20	Correct	12 ms	12376 KB	Output is correct
21	Correct	11 ms	12376 KB	Output is correct
22	Correct	13 ms	12396 KB	Output is correct
23	Correct	11 ms	12396 KB	Output is correct
24	Correct	11 ms	12412 KB	Output is correct
25	Correct	11 ms	12412 KB	Output is correct
26	Correct	12 ms	12428 KB	Output is correct
27	Correct	13 ms	12556 KB	Output is correct
28	Correct	12 ms	12556 KB	Output is correct
29	Correct	11 ms	12556 KB	Output is correct
30	Correct	11 ms	12556 KB	Output is correct
31	Correct	12 ms	12556 KB	Output is correct
32	Correct	10 ms	12556 KB	Output is correct
33	Correct	10 ms	12556 KB	Output is correct
34	Correct	10 ms	12556 KB	Output is correct
35	Correct	9 ms	12556 KB	Output is correct
36	Correct	10 ms	12556 KB	Output is correct
37	Correct	12 ms	12556 KB	Output is correct
38	Correct	12 ms	12556 KB	Output is correct
39	Correct	10 ms	12556 KB	Output is correct
40	Correct	11 ms	12556 KB	Output is correct
41	Correct	11 ms	12556 KB	Output is correct
42	Correct	12 ms	12556 KB	Output is correct
43	Correct	11 ms	12556 KB	Output is correct
44	Correct	10 ms	12556 KB	Output is correct
45	Correct	11 ms	12556 KB	Output is correct
46	Correct	11 ms	12556 KB	Output is correct
47	Correct	11 ms	12556 KB	Output is correct
48	Correct	11 ms	12556 KB	Output is correct
49	Correct	11 ms	12556 KB	Output is correct
50	Correct	11 ms	12556 KB	Output is correct
51	Correct	11 ms	12556 KB	Output is correct
52	Correct	11 ms	12556 KB	Output is correct
53	Correct	12 ms	12556 KB	Output is correct
54	Correct	12 ms	12556 KB	Output is correct
55	Correct	11 ms	12556 KB	Output is correct
56	Correct	11 ms	12556 KB	Output is correct
57	Correct	13 ms	12556 KB	Output is correct
58	Correct	11 ms	12556 KB	Output is correct
59	Correct	484 ms	36416 KB	Output is correct
60	Correct	550 ms	45016 KB	Output is correct
61	Correct	11 ms	45016 KB	Output is correct
62	Correct	11 ms	45016 KB	Output is correct
63	Correct	385 ms	46672 KB	Output is correct
64	Correct	15 ms	46672 KB	Output is correct
65	Correct	23 ms	46672 KB	Output is correct
66	Correct	187 ms	46672 KB	Output is correct
67	Correct	665 ms	78748 KB	Output is correct
68	Correct	645 ms	78748 KB	Output is correct
69	Correct	21 ms	78748 KB	Output is correct
70	Correct	111 ms	78748 KB	Output is correct
71	Correct	373 ms	78748 KB	Output is correct
72	Correct	394 ms	83916 KB	Output is correct
73	Correct	140 ms	83916 KB	Output is correct
74	Correct	589 ms	88884 KB	Output is correct
75	Correct	38 ms	88884 KB	Output is correct
76	Correct	419 ms	99924 KB	Output is correct
77	Correct	381 ms	106796 KB	Output is correct
78	Correct	61 ms	106796 KB	Output is correct
79	Correct	631 ms	117396 KB	Output is correct
80	Correct	12 ms	117396 KB	Output is correct
81	Correct	141 ms	117396 KB	Output is correct
82	Correct	517 ms	120620 KB	Output is correct
83	Correct	570 ms	125300 KB	Output is correct
84	Correct	560 ms	131952 KB	Output is correct
85	Correct	542 ms	138568 KB	Output is correct
86	Correct	585 ms	146348 KB	Output is correct
87	Correct	564 ms	152844 KB	Output is correct

답안 #43764

Compilation message

Subtask #1 18.0 / 18.0

Subtask #2 45.0 / 45.0

Subtask #3 37.0 / 37.0

Subtask #1
18.0 / 18.0

Subtask #2
45.0 / 45.0

Subtask #3
37.0 / 37.0