Submission #533398

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
533398	2022-03-05 21:20:24	Marceantasy	Synchronization (JOI13_synchronization)	C++17	0 / 100	501 ms	26288 KiB

synchronization

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#include <bits/stdc++.h>
using namespace std; 
 
#define ll long long
#define ar array
 
const int mxN = 2e5+1, M = 1e9+7;
int n, m, q;
bool active[mxN];
 
vector<int> adj[mxN];
pair<int, int> edges[mxN];
int info[mxN], last_sync[mxN];
 
int timer = 0, tin[mxN], tout[mxN];
 
int up[20][mxN];
int bit[mxN];
 
void dfs(int u = 0, int p = -1){
    up[0][u] = p;
    for(int i = 1; i<20 && up[i-1][u]!=-1; ++i){
        up[i][u] = up[i-1][up[i-1][u]];
    }
    info[u] = 1;
    tin[u] = timer++;
    for(int v : adj[u]){
        if(v == p) continue;
        dfs(v, u);
    }
 
 
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