Submission #1294572


Source Code Expand

#define _USE_MATH_DEFINES
#include <cassert>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <stack>
#include <list>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <algorithm>
#include <complex>
#include <cmath>
#include <numeric>
#include <bitset>

using namespace std;

#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
  cerr << name << ": " << arg1 << endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
  const char* comma = strchr(names + 1, ',');
  cerr.write(names, comma - names) << ": " << arg1 << " |";
  __f(comma + 1, args...);
}

typedef long long int64;
typedef pair<int, int> ii;
const int INF = 1 << 30;
const int MOD = 1e9 + 7;

const int N = 1e5 + 10;
vector<int> a[N];
int dp[N];

void DFS(int u, int parent) {
  int sum = 0;
  for (auto& v : a[u]) {
    if (v == parent) continue;
    DFS(v, u);
    sum |= dp[v];
  }
  dp[u] = sum + 1;
}

int main() {
  int n;
  scanf("%d", &n);
  for (int i = 1; i < n; ++i) {
    int x, y;
    scanf("%d%d", &x, &y);
    --x; --y;
    a[x].push_back(y);
    a[y].push_back(x);
  }
  DFS(0, -1);
  int mask = *max_element(dp, dp + n);
  int ret = 0;
  for (int i = 0; i < 32; ++i) {
    if (mask & (1 << i)) {
      ret = max(ret, i);
    }
  }
  printf("%d\n", ret);
  return 0;
}

Submission Info

Submission Time
Task D - Uninity
User cuiaoxiang
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1569 Byte
Status WA
Exec Time 46 ms
Memory 10624 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:57:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
                  ^
./Main.cpp:60:26: 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 0 / 1400
Status
AC × 2
AC × 55
WA × 19
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 WA 39 ms 6272 KB
02.txt WA 39 ms 6272 KB
03.txt WA 39 ms 6272 KB
04.txt WA 39 ms 6272 KB
05.txt WA 39 ms 6272 KB
06.txt WA 39 ms 6272 KB
07.txt WA 40 ms 6272 KB
08.txt WA 40 ms 6272 KB
09.txt AC 27 ms 7296 KB
10.txt AC 28 ms 8576 KB
11.txt AC 15 ms 5504 KB
12.txt AC 15 ms 5632 KB
13.txt AC 46 ms 10624 KB
14.txt AC 39 ms 10240 KB
15.txt AC 42 ms 9600 KB
16.txt WA 42 ms 7680 KB
17.txt AC 29 ms 6520 KB
18.txt AC 30 ms 6516 KB
19.txt AC 31 ms 6656 KB
20.txt AC 32 ms 6656 KB
21.txt AC 32 ms 6528 KB
22.txt AC 33 ms 6528 KB
23.txt AC 29 ms 6520 KB
24.txt AC 29 ms 6520 KB
25.txt AC 34 ms 6396 KB
26.txt AC 36 ms 6400 KB
27.txt AC 35 ms 6400 KB
28.txt AC 37 ms 6400 KB
29.txt AC 38 ms 6400 KB
30.txt AC 41 ms 6400 KB
31.txt AC 42 ms 6400 KB
32.txt AC 38 ms 6272 KB
33.txt AC 39 ms 6272 KB
34.txt AC 39 ms 6272 KB
35.txt AC 40 ms 6272 KB
36.txt AC 40 ms 6272 KB
37.txt AC 39 ms 6272 KB
38.txt AC 40 ms 6144 KB
39.txt AC 41 ms 6144 KB
40.txt AC 39 ms 6272 KB
41.txt AC 38 ms 6272 KB
42.txt AC 42 ms 6144 KB
43.txt AC 42 ms 6144 KB
44.txt AC 35 ms 6656 KB
45.txt AC 34 ms 6656 KB
46.txt WA 37 ms 6656 KB
47.txt WA 36 ms 6656 KB
48.txt WA 37 ms 6528 KB
49.txt WA 37 ms 6528 KB
50.txt WA 39 ms 6400 KB
51.txt WA 39 ms 6400 KB
52.txt WA 40 ms 6144 KB
53.txt WA 43 ms 6272 KB
54.txt WA 41 ms 6272 KB
55.txt WA 42 ms 6272 KB
56.txt AC 29 ms 6520 KB
57.txt AC 36 ms 9468 KB
58.txt AC 37 ms 9468 KB
59.txt AC 41 ms 6272 KB
60.txt AC 40 ms 6272 KB
61.txt AC 32 ms 7416 KB
62.txt AC 34 ms 7416 KB
63.txt AC 2 ms 2560 KB
64.txt AC 2 ms 2560 KB
65.txt AC 2 ms 2560 KB
66.txt AC 2 ms 2560 KB
67.txt AC 2 ms 2560 KB
68.txt AC 2 ms 2560 KB
69.txt AC 2 ms 2560 KB
70.txt AC 2 ms 2560 KB
71.txt AC 2 ms 2560 KB
72.txt AC 2 ms 2560 KB
s1.txt AC 2 ms 2560 KB
s2.txt AC 2 ms 2560 KB