Submission #1172870

#	Time	Username	Problem	Language	Result	Execution time	Memory
1172870		rayan_bd	Klasika (COCI20_klasika)	C++17	33 / 110	147 ms	72512 KiB

klasika

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;

typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> pbds; 


#define getar(ar,n) for(ll i=0;i<n;++i) cin>>ar[i]
#define show(n) cout<<n<<'\n'
#define all(v) v.begin(), v.end()
#define br cout<<"\n"
#define pb push_back
#define nl '\n'
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
#define ret return
#define ll long long
#define ld long double
#define sza(x) ((int)x.size())
#define fi first
#define se second

const int mxN = 3e5 + 5;
const ll MOD = 1e9 + 7;
const ll INF = 1e9;
const ld EPS = 1e-9;

ll cxor[mxN];

struct Node
{
	Node* children[2];
	Node(){
		for(ll i=0;i<2;++i){
			children[i]=NULL;
		}
	}
};

struct Trie{
	Node* root = new Node();
	void add(ll x){
		Node* curr=root;
		for(ll i=32;i>=0;--i){
			ll curr_bit=(x&(1ll<<i))>0;
			if(curr->children[curr_bit]==NULL){
				curr->children[curr_bit]=new Node();
			}
			curr=curr->children[curr_bit];
		}
	}
	ll qry(ll x){
		Node* curr=root;
		ll ans=0;
		for(ll i=32;i>=0;--i){
			ll curr_bit=(x&(1ll<<i))>0;
			if(curr->children[!curr_bit]!=NULL){
				curr=curr->children[!curr_bit];
				ans|=(1ll<<i);
			}else{
				curr=curr->children[curr_bit];
			}
			if(curr==NULL) break;
		}
		return ans;
	}
} t;

void lets_go() {
	ll q,x,y,n=1;cin>>q;
	string type;
	t.add(0);
	while(q--){
		cin>>type>>x>>y;
		if(type=="Add"){
			cxor[++n]=cxor[x]^y;
			t.add(cxor[n]);
		}else{
			show(t.qry(cxor[x]));
		}
	}
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    
    memset(cxor,0,sizeof(cxor));
    lets_go();

    return 0;
}

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