oj.uz

Submission #201093

# Submission time Handle Problem Language Result Execution time Memory
201093 2020-02-09T10:39:00 Z mraron Klasika (COCI20_klasika) C++14
33 / 110
 2024 ms 524292 KB 
#include<iostream>
#include<vector>
#include<map>
#include<set>
#include<cassert>
#include<cassert>
#include<unordered_map>
#include<unordered_set>
#include<functional>
#include<queue>
#include<stack>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<sstream>
#include<iomanip>
#include<cstdio>
#include<cstdlib>
#include<numeric>
#include<random>
#include<chrono>
#include<bitset>
using namespace std;

#define all(x) (x).begin(), (x).end()
#define pb push_back
#define xx first
#define yy second
#define sz(x) (int)(x).size()
#define gc getchar
#define IO ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
#define mp make_pair

#ifndef ONLINE_JUDGE
#  define LOG(x) (cerr << #x << " = " << (x) << endl)
#else
#  define LOG(x) ((void)0)
#endif

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

const double PI=3.1415926535897932384626433832795;
const ll INF = 1LL<<62;
const ll MINF = -1LL<<62;

template<typename T> T getint() {
	T val=0;
	char c;
	
	bool neg=false;
	while((c=gc()) && !(c>='0' && c<='9')) {
		neg|=c=='-';
	}

	do {
		val=(val*10)+c-'0';
	} while((c=gc()) && (c>='0' && c<='9'));

	return val*(neg?-1:1);
}

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); uniform_int_distribution<int>(0, n-1)(rng)


int q;

struct op {
	int typ,a,b;
};

const int MAXN=200001;

int n=1;
vector<op> lst;
vector<pair<int,int>> adj[MAXN];

int sz[MAXN], par[MAXN], d[MAXN];
void dfs_pre(int x) {
	sz[x]=1;
	for(auto i:adj[x]) {
		if(!sz[i.xx]) {
			par[i.xx]=x;
			d[i.xx]=i.yy^d[x];
			dfs_pre(i.xx);
			sz[x]+=sz[i.xx];
		}
	}
}

int hld_top[MAXN], hld_id[MAXN], hld_pos[MAXN], pos=0, id=1;
void dfs_hld(int x) {
//	cerr<<x<<" "<<pos<<"\n";
	hld_id[x]=id;
	hld_pos[x]=pos++;
	if(!hld_top[hld_id[x]]) {
		hld_top[hld_id[x]]=x;
	}
	
	int best=0;
	for(auto i:adj[x]) {
		if(par[x]==i.xx) continue ;
		if(!best || sz[best]<sz[i.xx]) best=i.xx;
	}
	
	if(best>0) dfs_hld(best);
	for(auto i:adj[x]) {
		if(par[x]!=i.xx && i.xx!=best) {
			id++;
			dfs_hld(i.xx);
		}	
	}
}


struct node {
	node* sub[2];
	node() {
		sub[0]=sub[1]=NULL;
	}
};

void insert(node* root, int num) {
	for(int i=30;i>=0;i--) {
		int c=(num&(1<<i))!=0;
		if(root->sub[c]==NULL) {
			root->sub[c]=new node;
		}
		
		root=root->sub[c];
	}
}

int mx(node *root, int with) {
	if(root==NULL) return 0;
	if(root->sub[0]==NULL && root->sub[1]==NULL) return 0;

	
	int ans=0;
	for(int i=30;i>=0;i--) {
		int c=(with&(1<<i))!=0;
		if(root->sub[1-c]!=NULL) {
			ans|=1<<i;
			root=root->sub[1-c];
		}else {
			root=root->sub[c];
		}
	}
	
	return ans;
}

node* tree[4*400001];

void add(int ind, int L, int R, int i, int j, int mit) {
	//cerr<<ind<<" "<<L<<" "<<R<<" "<<i<<" "<<j<<" "<<mit<<"add\n"<<flush;
	if(R<i || j<L) return ;
	if(i<=L && R<=j) {
		if(tree[ind]==NULL) tree[ind]=new node;
		insert(tree[ind], mit);
		return ;
	}
	
	add(2*ind, L, (L+R)/2, i, j, mit);
	add(2*ind+1, (L+R)/2+1, R, i, j, mit);
}

int mx(int ind, int L, int R, int i, int with) {
	//cerr<<ind<<" "<<L<<" "<<R<<" "<<i<<" "<<i<<" "<<with<<"mx\n"<<flush;

	if(R<i || i<L) return 0;
	
	int ans=mx(tree[ind], with);
	if(L!=R) ans=max(ans, max(mx(2*ind, L, (L+R)/2, i, with), mx(2*ind+1, (L+R)/2+1, R, i, with)));
	
	return ans;
}

void add(int root, int dd) {
	while(root>0) {
		int blk=hld_id[root];
		int tp=hld_top[blk];
		add(1,0,pos-1,hld_pos[tp],hld_pos[root],dd);
		root=par[tp];
	}
}

int query(int a, int b) {
	int base=d[a];
	//cerr<<base<<"\n";
	//cerr<<hld_pos[b]<<"\n";
	return mx(1,0,pos-1,hld_pos[b],base);
}

int main() {
	IO;
	cin>>q;
	lst.resize(q);
	for(int i=0;i<q;++i) {
		string t;
		cin>>t;
		lst[i].typ=(t=="Add"?0:1);
		cin>>lst[i].a>>lst[i].b;
		
		if(lst[i].typ==0) {
			adj[lst[i].a].push_back({n+1, lst[i].b});
			adj[n+1].push_back({lst[i].a, lst[i].b});
			lst[i].a=n+1;
			
			n++;
		}
	}
	
	dfs_pre(1);
	dfs_hld(1);
	
	add(1,0,pos-1,0,0,0);
	for(auto i:lst) {
		if(i.typ==0) {
			//cerr<<"typ0\n";
			add(i.a, d[i.a]);
		}else {
			//cerr<<"typ1\n";
			cout<<query(i.a,i.b)<<"\n";
		}
	}
	
	return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5240 KB Output is correct
2 Correct 8 ms 5240 KB Output is correct
3 Correct 9 ms 5496 KB Output is correct
4 Correct 8 ms 5500 KB Output is correct
5 Correct 8 ms 5112 KB Output is correct
6 Correct 8 ms 5368 KB Output is correct
7 Correct 8 ms 5368 KB Output is correct
8 Correct 8 ms 5624 KB Output is correct
9 Correct 8 ms 5240 KB Output is correct
10 Correct 8 ms 5368 KB Output is correct
11 Correct 8 ms 5496 KB Output is correct
12 Correct 9 ms 5624 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5240 KB Output is correct
2 Correct 8 ms 5240 KB Output is correct
3 Correct 9 ms 5496 KB Output is correct
4 Correct 8 ms 5500 KB Output is correct
5 Correct 8 ms 5112 KB Output is correct
6 Correct 8 ms 5368 KB Output is correct
7 Correct 8 ms 5368 KB Output is correct
8 Correct 8 ms 5624 KB Output is correct
9 Correct 8 ms 5240 KB Output is correct
10 Correct 8 ms 5368 KB Output is correct
11 Correct 8 ms 5496 KB Output is correct
12 Correct 9 ms 5624 KB Output is correct
13 Correct 12 ms 6524 KB Output is correct
14 Correct 14 ms 8440 KB Output is correct
15 Correct 16 ms 10360 KB Output is correct
16 Correct 18 ms 12152 KB Output is correct
17 Correct 11 ms 6520 KB Output is correct
18 Correct 14 ms 8056 KB Output is correct
19 Correct 19 ms 10104 KB Output is correct
20 Correct 19 ms 12152 KB Output is correct
21 Correct 12 ms 6904 KB Output is correct
22 Correct 15 ms 8952 KB Output is correct
23 Correct 17 ms 11132 KB Output is correct
24 Correct 18 ms 12920 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1512 ms 236920 KB Output is correct
2 Correct 2024 ms 489812 KB Output is correct
3 Runtime error 1420 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5240 KB Output is correct
2 Correct 8 ms 5240 KB Output is correct
3 Correct 9 ms 5496 KB Output is correct
4 Correct 8 ms 5500 KB Output is correct
5 Correct 8 ms 5112 KB Output is correct
6 Correct 8 ms 5368 KB Output is correct
7 Correct 8 ms 5368 KB Output is correct
8 Correct 8 ms 5624 KB Output is correct
9 Correct 8 ms 5240 KB Output is correct
10 Correct 8 ms 5368 KB Output is correct
11 Correct 8 ms 5496 KB Output is correct
12 Correct 9 ms 5624 KB Output is correct
13 Correct 12 ms 6524 KB Output is correct
14 Correct 14 ms 8440 KB Output is correct
15 Correct 16 ms 10360 KB Output is correct
16 Correct 18 ms 12152 KB Output is correct
17 Correct 11 ms 6520 KB Output is correct
18 Correct 14 ms 8056 KB Output is correct
19 Correct 19 ms 10104 KB Output is correct
20 Correct 19 ms 12152 KB Output is correct
21 Correct 12 ms 6904 KB Output is correct
22 Correct 15 ms 8952 KB Output is correct
23 Correct 17 ms 11132 KB Output is correct
24 Correct 18 ms 12920 KB Output is correct
25 Correct 1512 ms 236920 KB Output is correct
26 Correct 2024 ms 489812 KB Output is correct
27 Runtime error 1420 ms 524292 KB Execution killed with signal 9 (could be triggered by violating memory limits)
28 Halted 0 ms 0 KB -