Submission #1181229

#	Time	Username	Problem	Language	Result	Execution time	Memory
1181229		tdkhai	Klasika (COCI20_klasika)	C++17	33 / 110	5093 ms	33128 KiB

klasika

/*
        _.-- ,.--.
      .'   .'     /
       @       |'..--------._
     /      \._/              '.
    /  .-.-                     \
   (  /    \                     \
   \\      '.                  | #
    \\       \   -.           /
     :\       |    )._____.'   \
      "       |   /  \  |  \    )
              |   |./'  :__ \.-'
              '--'
*/
#include<bits/stdc++.h>
#define ll long long
#define llll pair<int,int>
#define ii pair<int,int>
#define fi first
#define se second
#define FOR(i,l,r) for(int i=l;i<=r;i++)
#define FOD(i,r,l) for(int i=r;i>=l;i--)
#define ull unsigned long long
#define iii pair<int,pii>
#define iv pair<pii,pii>
#define db double
#define ld long double
#define pb push_back
using namespace std;

const int dx[]  = {1, -1, 0, 0};
const int dy[]  = {0, 0, -1, 1};
const int dxx[] = {1, 1, -1, -1, 2, 2, -2, -2};
const int dyy[] = {2, -2, 2, -2, 1, -1, 1, -1};
const ll INF=1e18;



struct node
{
    node *a[2];
    set<int> s;
    node()
    {
        a[0]=a[1]=NULL;
        s.clear();
    }
};
struct quanque
{
    bool asked;
    int x,y;
};
const int N=2e5+5;
vector<quanque>Query;
int l[N],r[N],n,timer,sx[N],ans[N],cc;
vector<ii> a[N];
void dfs(int u=1,int cur=0)
{
    l[u]=++timer;
    sx[u]=cur;
    for(int i=0;i<a[u].size();i++)
    {
        int v=a[u][i].fi,xo=a[u][i].se;
        dfs(v,cur^xo);
    }
    r[u]=timer;
}
void update(int pos,int v,node *p)
{
//    cout << ":: " << v << "::" << ' ';
    for(int i=30;i>=0;i--)
    {
        int bit=((v>>i)&1);
        if(p->a[bit]==NULL)
        {
            p->a[bit]=new node();
        }
//        cout << bit << ' ';
        p=p->a[bit];
        p->s.insert(pos);
    }
}
int get(int u,int v,int val,node *p)
{
    int ret=0;
    for(int i=30;i>=0;i--)
    {
        int bit=((val>>i)&1);
        if(p->a[1-bit]==NULL or
        (lower_bound(p->a[1-bit]->s.begin(),p->a[1-bit]->s.end(),u)==upper_bound(p->a[1-bit]->s.begin(),p->a[1-bit]->s.end(),v)))
        {
//            if(p->a[1-bit]==NULL) cout << "cond1:";
//            else cout << "cond2:";
//            cout << bit << ' ';
            p=p->a[bit];
        }
        else
        {
//            cout << "+" << 1-bit << ' ';
            ret+=1<<i;
            p=p->a[1-bit];
        }
    }
    return ret;
}
void solve()
{
    cin >> n;
    node *root=new node();
    int cnt=1;
    for(int i=1;i<=n;i++)
    {
        string type;
        int x,y;
        cin >> type >> x >> y;
        if(type=="Add")
        {
            cnt++;
            a[x].push_back({cnt,y});
            Query.push_back({0,cnt,-1});
        }
        else
        {
            Query.pb({1,x,y});
        }
    }
    dfs();
//    for(int i=1;i<=cnt;i++)
//    {
//        cout << sx[i] << " \n"[i==cnt];
//    }
    update(1,0,root);
//    cout << '\n';
    for(quanque q:Query)
    {
        if(q.asked)
        {
//            cout << sx[q.x] << '\n';
            ans[++cc]=get(l[q.y],r[q.y],sx[q.x],root);
        }
        else
        {
//            cout << q.x << '\n';
            update(l[q.x],sx[q.x],root);
//            cout << '\n';
        }
    }
    for(int i=1;i<=cc;i++)
    {
        cout << ans[i] << '\n';
    }
}
int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
//  freopen("tdk.inp","r",stdin);
//  freopen("tdk.out","w",stdout);
    int t=1;
    //cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}

• Subtask 1: 11 / 11
• Subtask 2: 22 / 22
• Subtask 3: 0 / 33
• Subtask 4: 0 / 44