Submission #27172

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
27172	2017-07-09 19:20:44	wwiiiii	트리 (KOI16_tree)	C++14	100 / 100	1186 ms	32540 KiB

tree

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#include <cstdio>
#include <vector>
#include <queue>
#include <set>
using namespace std;
const int N = 200100;
set<int> adj[N];
int parent[N];
int treeidx[N];
int n, q, maxidx, visitmax;
int visited[N];
void reindex(int node) {
  treeidx[node] = maxidx;
  queue<int> q; q.push(node);
  while (!q.empty())
  {
    int now = q.front(); q.pop();
    for (auto next : adj[now]) {
      if (treeidx[next] != maxidx) {
        treeidx[next] = maxidx;
        q.push(next);
      }
    }
  }
}
void cut(int node)
{
  visitmax++;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

tree.cpp: In function 'int main()':
tree.cpp:76:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &q);
                        ^
tree.cpp:78:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &parent[i]);
                          ^
tree.cpp:83:45: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int b, c, d; scanf("%d %d %d", &b, &c, &d);
                                             ^

• Subtask 1: 9 / 9
• Subtask 2: 13 / 13
• Subtask 3: 14 / 14
• Subtask 4: 19 / 19
• Subtask 5: 45 / 45