Submission #42793

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
42793	2018-03-04 03:54:08	nickyrio	Birthday gift (IZhO18_treearray)	C++14	100 / 100	1377 ms	75368 KiB

treearray

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#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = a; i<= b; ++i)
#define FORD(i, a, b) for (int i = a; i>=b; --i)
#define REP(i, a) for (int i = 0; i<a; ++i)
#define DEBUG(x) { cerr << #x << " = " << x << endl; }
#define Arr(A, l, r) { cerr << #A  << " = "; FOR(_, l, r) cerr << A[_] << ' '; cerr << endl; }
#define N 200002
#define pp pair<int, int>
#define next __next
#define prev __prev
#define __builtin_popcount __builtin_popcountll
#define bit(S, i) (((S) >> i) & 1)
#define IO ios::sync_with_stdio(false); cin.tie(NULL);cout.tie(NULL);
using namespace std;
 
int n, m, q, a[N], h[N];
int LCA[N][18], LOG;
vector<int> e[N];
set<int> One[N], Two[N];
 
void dfs(int u, int p) {
    for (int v : e[u]) if (v != p) {
        h[v] = h[u] + 1;
        LCA[v][0] = u;
        dfs(v, u);
    }
}
 
int lca(int u, int v) {
    if (h[u] < h[v]) swap(u, v);
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 18 / 18
• Subtask 3: 26 / 26
• Subtask 4: 44 / 44