Submission #69459

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
69459	2018-08-21 01:12:49	kingpig9	Network (BOI15_net)	C++11	100 / 100	698 ms	154532 KiB

net

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
#define debug(...) fprintf(stderr, __VA_ARGS__)
//#define debug(...)
#define all(v) (v).begin(), (v).end()
#define fillchar(a, s) memset((a), (s), sizeof(a))
#define fi first
#define se second
int N;
vector<int> adj[500010];
vector<int> leaves;
void dfs (int x, int p) {
  if (adj[x].size() == 1) {
    leaves.push_back(x);
  }
  for (int y : adj[x]) {
    if (y != p) {
      dfs(y, x);
    }
  }
}
int main() {
  scanf("%d", &N);
 
 
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Compilation message (stderr)

net.cpp: In function 'int main()':
net.cpp:46:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0, j = leaves.size() / 2; j < leaves.size(); i++, j++) {
                                         ~~^~~~~~~~~~~~~~~
net.cpp:30:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
net.cpp:33:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &x, &y);
   ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 45 / 45
• Subtask 3: 37 / 37