Submission #1769046
Source Code Expand
#include <cstdio> #include <cstdlib> #include <cstring> #include <iostream> #include <algorithm> typedef long long ll ; #define rep(i, a, b) for (int i = a; i <= b; ++ i) const int N = 1e5 + 5, M = N << 1 ; using namespace std ; int n, e, ter[M], nxt[M], lnk[N], f[N] ; void add(int x, int y) { ter[++ e] = y, nxt[e] = lnk[x], lnk[x] = e ; } inline int count_max(int x) { int ret = - 1 ; rep(i, 0, 20) if ((x >> i) & 1) ret = i ; return ret ; } void dfs(int p, int fa) { int las = 0, must = 0 ; for (int i = lnk[p]; i; i = nxt[i]) if (ter[i] != fa) { dfs(ter[i], p) ; must |= las & f[ter[i]] ; las |= f[ter[i]] ; } int mx = count_max(must) + 1 ; for ( ; (1 << mx) & las ; ++ mx) ; f[p] = (las | (1 << mx)) >> mx << mx ; } int main() { scanf("%d", &n) ; int x, y ; rep(i, 1, n - 1) { scanf("%d%d", &x, &y) ; add(x, y), add(y, x) ; } dfs(1, 0) ; printf("%d\n", count_max(f[1])) ; return 0 ; }
Submission Info
Submission Time | |
---|---|
Task | D - Uninity |
User | mjy0724 |
Language | C++14 (GCC 5.4.1) |
Score | 1400 |
Code Size | 968 Byte |
Status | AC |
Exec Time | 29 ms |
Memory | 7168 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:36:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n) ; ^ ./Main.cpp:39:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x, &y) ; ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1400 / 1400 | ||||
Status |
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|
Set Name | Test Cases |
---|---|
Sample | s1.txt, s2.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt, 55.txt, 56.txt, 57.txt, 58.txt, 59.txt, 60.txt, 61.txt, 62.txt, 63.txt, 64.txt, 65.txt, 66.txt, 67.txt, 68.txt, 69.txt, 70.txt, 71.txt, 72.txt, s1.txt, s2.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 26 ms | 2560 KB |
02.txt | AC | 26 ms | 2560 KB |
03.txt | AC | 26 ms | 2560 KB |
04.txt | AC | 26 ms | 2560 KB |
05.txt | AC | 26 ms | 2560 KB |
06.txt | AC | 26 ms | 2560 KB |
07.txt | AC | 26 ms | 2560 KB |
08.txt | AC | 26 ms | 2560 KB |
09.txt | AC | 19 ms | 4224 KB |
10.txt | AC | 20 ms | 5632 KB |
11.txt | AC | 10 ms | 2816 KB |
12.txt | AC | 10 ms | 2944 KB |
13.txt | AC | 29 ms | 7168 KB |
14.txt | AC | 27 ms | 6784 KB |
15.txt | AC | 29 ms | 6144 KB |
16.txt | AC | 28 ms | 4096 KB |
17.txt | AC | 22 ms | 2560 KB |
18.txt | AC | 22 ms | 2560 KB |
19.txt | AC | 23 ms | 2560 KB |
20.txt | AC | 24 ms | 2560 KB |
21.txt | AC | 24 ms | 2560 KB |
22.txt | AC | 24 ms | 2560 KB |
23.txt | AC | 22 ms | 2560 KB |
24.txt | AC | 22 ms | 2560 KB |
25.txt | AC | 24 ms | 2560 KB |
26.txt | AC | 25 ms | 2560 KB |
27.txt | AC | 25 ms | 2560 KB |
28.txt | AC | 26 ms | 2560 KB |
29.txt | AC | 26 ms | 2560 KB |
30.txt | AC | 26 ms | 2560 KB |
31.txt | AC | 26 ms | 2560 KB |
32.txt | AC | 26 ms | 2560 KB |
33.txt | AC | 26 ms | 2560 KB |
34.txt | AC | 26 ms | 2560 KB |
35.txt | AC | 26 ms | 2560 KB |
36.txt | AC | 26 ms | 2560 KB |
37.txt | AC | 26 ms | 2560 KB |
38.txt | AC | 26 ms | 2560 KB |
39.txt | AC | 26 ms | 2560 KB |
40.txt | AC | 26 ms | 2560 KB |
41.txt | AC | 26 ms | 2560 KB |
42.txt | AC | 27 ms | 2560 KB |
43.txt | AC | 26 ms | 2560 KB |
44.txt | AC | 25 ms | 2688 KB |
45.txt | AC | 25 ms | 2688 KB |
46.txt | AC | 26 ms | 2688 KB |
47.txt | AC | 26 ms | 2688 KB |
48.txt | AC | 26 ms | 2688 KB |
49.txt | AC | 26 ms | 2688 KB |
50.txt | AC | 27 ms | 2688 KB |
51.txt | AC | 27 ms | 2688 KB |
52.txt | AC | 27 ms | 2688 KB |
53.txt | AC | 27 ms | 2688 KB |
54.txt | AC | 27 ms | 2688 KB |
55.txt | AC | 27 ms | 2688 KB |
56.txt | AC | 22 ms | 2560 KB |
57.txt | AC | 26 ms | 5760 KB |
58.txt | AC | 27 ms | 5760 KB |
59.txt | AC | 27 ms | 2688 KB |
60.txt | AC | 28 ms | 2688 KB |
61.txt | AC | 24 ms | 3712 KB |
62.txt | AC | 24 ms | 3584 KB |
63.txt | AC | 1 ms | 256 KB |
64.txt | AC | 1 ms | 256 KB |
65.txt | AC | 1 ms | 256 KB |
66.txt | AC | 1 ms | 256 KB |
67.txt | AC | 1 ms | 256 KB |
68.txt | AC | 1 ms | 256 KB |
69.txt | AC | 1 ms | 256 KB |
70.txt | AC | 1 ms | 256 KB |
71.txt | AC | 1 ms | 256 KB |
72.txt | AC | 1 ms | 256 KB |
s1.txt | AC | 1 ms | 256 KB |
s2.txt | AC | 1 ms | 256 KB |