Submission #499575

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
499575	2021-12-28 19:52:13	couplefire	Synchronization (JOI13_synchronization)	C++17	100 / 100	268 ms	24176 KiB

synchronization

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#include <bits/stdc++.h>
using namespace std;
const int N = 100005;
int n, m, q, uu[N], vv[N], bit[N], lst[N], ans[N];
vector<int> adj[N];
int up[N][20], tin[N], tout[N], tid;
void upd(int pos, int val){
    for(; pos<N; pos=pos|(pos+1))
        bit[pos] += val;
}
int query(int pos){
    int res = 0;
    for(; pos>=0; pos=(pos&(pos+1))-1)
        res += bit[pos];
    return res;
}
void dfs(int v, int p){
    tin[v] = tid++;
    up[v][0] = p;
    for(int i = 1; i<20; ++i)
        up[v][i] = up[v][i-1]==-1?-1:up[up[v][i-1]][i-1];
    for(auto u : adj[v])
        if(u!=p) dfs(u, v);
    tout[v] = tid;
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40