Submission #879001

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
879001	2023-11-26 04:34:59	imarn	Birthday gift (IZhO18_treearray)	C++14	0 / 100	6 ms	25944 KiB

treearray

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#include<bits/stdc++.h>
#define pb push_back
#define ll long long
#define f first
#define s second
#define sz(x) (int)x.size()
#define pii pair<ll,ll>
using namespace std;
const int N=2e5+5;
vector<int>g[N];
int pr[N][20],dep[N]{0};
void dfs(int u,int p,int l){
    dep[u]=l;pr[u][0]=p;
    for(int i=1;i<20;i++)pr[u][i]=pr[pr[u][i-1]][i-1];
    for(auto v:g[u]){
        if(v==p)continue;
        dfs(v,u,l+1);
    }
}
int lca(int a,int b){
    if(dep[a]>dep[b])swap(a,b);
    for(int i=19;i>=0;i--)if(dep[b]-(1<<i)>=dep[a])b=pr[b][i];
    if(a==b)return a;
    for(int i=19;i>=0;i--)if(pr[a][i]!=pr[b][i])a=pr[a][i],b=pr[b][i];
    return pr[a][0];
}
set<int>d[N],dd[N];
int main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    int n,m,q;cin>>n>>m>>q;
 
 
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• Subtask 1: 0 / 12
• Subtask 2: 0 / 18
• Subtask 3: 0 / 26
• Subtask 4: 0 / 44