Submission #824219

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
824219	2023-08-13 19:07:42	vjudge1	Mergers (JOI19_mergers)	C++17	100 / 100	900 ms	233108 KiB

mergers

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#include <bits/stdc++.h>
using namespace std;
// 123
static const int N = 1e6 + 10;
class lca_t {
       public:
        int rmq[20][N];
        int pos[N], d[N];
        vector<int> adj[N];
        int timer;
        int n;
        lca_t(int n = 0) : n(n) {}
        void add_edge(int u, int v) {
                adj[u].emplace_back(v);
                adj[v].emplace_back(u);
        }
        void dfs(int u, int p) {
                rmq[0][timer++] = u;
                for (int v : adj[u]) {
                        if (v == p) continue;
                        d[v] = d[u] + 1;
                        dfs(v, u);
                        rmq[0][timer++] = u;
                }
        }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

mergers.cpp: In function 'int32_t main()':
mergers.cpp:141:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  141 |         cout << (res + 1 >> 1);
      |                  ~~~~^~~

• Subtask 1: 10 / 10
• Subtask 2: 24 / 24
• Subtask 3: 14 / 14
• Subtask 4: 22 / 22
• Subtask 5: 30 / 30