Submission #1113972

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1113972	2024-11-18 01:26:12	spycoderyt	Synchronization (JOI13_synchronization)	C++17	100 / 100	570 ms	37980 KiB

synchronization

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#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
const int N = 3e5+5;
int st[N],in[N],out[N],p[33][N],fen[N],dp[2][N],child[N],dep[N];
vector<int> A[N];
int cnt = 1;
int n,m,q,a,b,x;
void add(int pos,int val) {
    for(int i = pos;i<N;i+=i&-i) fen[i]+=val;
}
int qry(int pos) {
    if(!pos)return 0;
    int res = 0;
    for(int i = pos;i>0;i-=i&-i) res += fen[i];
    return res;
}
void dfs(int u,int par = -1) {
    in[u]=cnt++;
    for(auto nxt : A[u])if(nxt!=par) {
        dep[nxt] = dep[u]+1;
        dfs(nxt,u);
        p[0][nxt] = u;
    }
    out[u]=cnt;
}
void dolca() {
    for(int i = 1;i<32;i++) {
        for(int j = 1;j<=n;j++) p[i][j] = p[i-1][p[i-1][j]];
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 10 / 10
• Subtask 4: 20 / 20
• Subtask 5: 40 / 40