oj.uz

Submission #201099

# Submission time Handle Problem Language Result Execution time Memory
201099 2020-02-09T10:47:53 Z mraron Klasika (COCI20_klasika) C++14
110 / 110
 1396 ms 405496 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 {
	int sub[2];
	node() {
		sub[0]=sub[1]=0;
	}
} trie[30*8*MAXN];
int nxt=1;

void insert(int root, int num) {
	for(int i=30;i>=0;i--) {
		int c=(num&(1<<i))!=0;
		if(trie[root].sub[c]==0) {
			trie[root].sub[c]=nxt++;
		}
		
		root=trie[root].sub[c];
	}
}

int mx(int root, int with) {
	if(root==0) return 0;
	if(trie[root].sub[0]==0 && trie[root].sub[1]==0) return 0;

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

int tree[4*MAXN];

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]==0) tree[ind]=nxt++;
		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 220 ms 381048 KB Output is correct
2 Correct 219 ms 380792 KB Output is correct
3 Correct 223 ms 380792 KB Output is correct
4 Correct 229 ms 380792 KB Output is correct
5 Correct 216 ms 380792 KB Output is correct
6 Correct 221 ms 380792 KB Output is correct
7 Correct 219 ms 381020 KB Output is correct
8 Correct 213 ms 380792 KB Output is correct
9 Correct 220 ms 380896 KB Output is correct
10 Correct 219 ms 380796 KB Output is correct
11 Correct 218 ms 380792 KB Output is correct
12 Correct 216 ms 380792 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 220 ms 381048 KB Output is correct
2 Correct 219 ms 380792 KB Output is correct
3 Correct 223 ms 380792 KB Output is correct
4 Correct 229 ms 380792 KB Output is correct
5 Correct 216 ms 380792 KB Output is correct
6 Correct 221 ms 380792 KB Output is correct
7 Correct 219 ms 381020 KB Output is correct
8 Correct 213 ms 380792 KB Output is correct
9 Correct 220 ms 380896 KB Output is correct
10 Correct 219 ms 380796 KB Output is correct
11 Correct 218 ms 380792 KB Output is correct
12 Correct 216 ms 380792 KB Output is correct
13 Correct 228 ms 380888 KB Output is correct
14 Correct 224 ms 380920 KB Output is correct
15 Correct 222 ms 380944 KB Output is correct
16 Correct 221 ms 381152 KB Output is correct
17 Correct 223 ms 380892 KB Output is correct
18 Correct 227 ms 380924 KB Output is correct
19 Correct 222 ms 381028 KB Output is correct
20 Correct 221 ms 380920 KB Output is correct
21 Correct 214 ms 380920 KB Output is correct
22 Correct 219 ms 380920 KB Output is correct
23 Correct 220 ms 380920 KB Output is correct
24 Correct 218 ms 380920 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1168 ms 389684 KB Output is correct
2 Correct 1186 ms 393408 KB Output is correct
3 Correct 1067 ms 397048 KB Output is correct
4 Correct 916 ms 401536 KB Output is correct
5 Correct 802 ms 390648 KB Output is correct
6 Correct 1012 ms 393336 KB Output is correct
7 Correct 1198 ms 395512 KB Output is correct
8 Correct 1396 ms 398836 KB Output is correct
9 Correct 1119 ms 391004 KB Output is correct
10 Correct 1163 ms 394076 KB Output is correct
11 Correct 1106 ms 396552 KB Output is correct
12 Correct 955 ms 399868 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 220 ms 381048 KB Output is correct
2 Correct 219 ms 380792 KB Output is correct
3 Correct 223 ms 380792 KB Output is correct
4 Correct 229 ms 380792 KB Output is correct
5 Correct 216 ms 380792 KB Output is correct
6 Correct 221 ms 380792 KB Output is correct
7 Correct 219 ms 381020 KB Output is correct
8 Correct 213 ms 380792 KB Output is correct
9 Correct 220 ms 380896 KB Output is correct
10 Correct 219 ms 380796 KB Output is correct
11 Correct 218 ms 380792 KB Output is correct
12 Correct 216 ms 380792 KB Output is correct
13 Correct 228 ms 380888 KB Output is correct
14 Correct 224 ms 380920 KB Output is correct
15 Correct 222 ms 380944 KB Output is correct
16 Correct 221 ms 381152 KB Output is correct
17 Correct 223 ms 380892 KB Output is correct
18 Correct 227 ms 380924 KB Output is correct
19 Correct 222 ms 381028 KB Output is correct
20 Correct 221 ms 380920 KB Output is correct
21 Correct 214 ms 380920 KB Output is correct
22 Correct 219 ms 380920 KB Output is correct
23 Correct 220 ms 380920 KB Output is correct
24 Correct 218 ms 380920 KB Output is correct
25 Correct 1168 ms 389684 KB Output is correct
26 Correct 1186 ms 393408 KB Output is correct
27 Correct 1067 ms 397048 KB Output is correct
28 Correct 916 ms 401536 KB Output is correct
29 Correct 802 ms 390648 KB Output is correct
30 Correct 1012 ms 393336 KB Output is correct
31 Correct 1198 ms 395512 KB Output is correct
32 Correct 1396 ms 398836 KB Output is correct
33 Correct 1119 ms 391004 KB Output is correct
34 Correct 1163 ms 394076 KB Output is correct
35 Correct 1106 ms 396552 KB Output is correct
36 Correct 955 ms 399868 KB Output is correct
37 Correct 1102 ms 392952 KB Output is correct
38 Correct 1162 ms 396948 KB Output is correct
39 Correct 1051 ms 400732 KB Output is correct
40 Correct 912 ms 405496 KB Output is correct
41 Correct 596 ms 391032 KB Output is correct
42 Correct 782 ms 393848 KB Output is correct
43 Correct 1002 ms 395804 KB Output is correct
44 Correct 1276 ms 398840 KB Output is correct
45 Correct 639 ms 391288 KB Output is correct
46 Correct 692 ms 394196 KB Output is correct
47 Correct 739 ms 396604 KB Output is correct
48 Correct 728 ms 399992 KB Output is correct