oj.uz

Submission #223348

# Submission time Handle Problem Language Result Execution time Memory
223348 2020-04-15T07:36:16 Z errorgorn Klasika (COCI20_klasika) C++14
33 / 110
 5000 ms 218892 KB 
#pragma GCC target ("avx2")
#pragma GCC optimization ("Ofast")
#pragma GCC optimization ("unroll-loops")
#pragma comment(linker, "/stack:200000000")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ll,ii>
#define endl '\n'

struct node{
	int s,e,m;
	set<int> val;
	
	node *l,*r;
	
	node (int _s,int _e){
		s=_s,e=_e,m=s+e>>1;
		
		val.insert(1<<30);
		
		if (s!=e){
			l=new node(s,m);
			r=new node(m+1,e);
		}
	}
	
	void update(int i,int j){
		val.insert(j);
		if (s==e) return;
		else if (i<=m) l->update(i,j);
		else r->update(i,j);
	}
	
	int query(int i,int j,int k){
		if (s==i && e==j){
			int curr=0;
			for (int x=29;~x;x--){
				if (k&(1<<x)){
					//can we find something with 0 bit
					if ((*val.lower_bound(curr))>=curr+(1<<x)) curr^=(1<<x);
				}
				else{
					//1-bit is better
					if ((*val.lower_bound(curr+(1<<x)))<curr+(2<<x)) curr^=(1<<x);
				}
			}
			return curr^k;
		}
		else if (j<=m) return l->query(i,j,k);
		else if (m<i) return r->query(i,j,k);
		else return max(l->query(i,m,k),r->query(m+1,j,k));
	}
}*root=new node(0,200005);

struct Q{
	char t;
	int a,b;
	
	Q (char _t,int _a,int _b){
		t=_t,a=_a,b=_b;
	}
};

int n;
vector<int> al[200005];
int val[200005];
int in[200005];
int out[200005];

int DFS_TIME=0;
void dfs(int i,int p){
	in[i]=++DFS_TIME;
	for (auto &it:al[i]){
		if (it==p) continue;
		
		dfs(it,i);
	}
	out[i]=DFS_TIME;
}

vector<Q> queries;

int main(){	
	ios::sync_with_stdio(0);
    cin.tie(0);
	
	cin>>n;
	
	string s;
	int a,b;
	for (int x=0;x<n;x++){
		cin>>s>>a>>b;
		queries.push_back(Q(s[0],a,b));
	}
	
	int index=2;
	for (auto &it:queries){
		if (it.t=='A'){
			al[it.a].push_back(index);
			al[index].push_back(it.a);
			
			val[index]=val[it.a]^it.b;
			index++;
		}
	}
	
	dfs(1,-1);
	
	//for (int x=1;x<index;x++) cout<<val[x]<<" "<<in[x]<<" "<<out[x]<<endl;
	root->update(in[1],val[1]); //oof

	index=2;
	for (auto &it:queries){
		if (it.t=='A'){
			//cout<<in[index]<<" "<<val[index]<<endl;
			root->update(in[index],val[index]);
			index++;
		}
		else{
			//cout<<in[it.b]<<" "<<out[it.b]<<" "<<val[it.a]<<endl;
			cout<<root->query(in[it.b],out[it.b],val[it.a])<<endl;
		}
	}
}

Compilation message

klasika.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("Ofast")
 
klasika.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization ("unroll-loops")
 
klasika.cpp:4:0: warning: ignoring #pragma comment  [-Wunknown-pragmas]
 #pragma comment(linker, "/stack:200000000")
 
klasika.cpp: In constructor 'node::node(int, int)':
klasika.cpp:21:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   s=_s,e=_e,m=s+e>>1;
               ~^~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 61432 KB Output is correct
2 Correct 55 ms 61432 KB Output is correct
3 Correct 57 ms 61564 KB Output is correct
4 Correct 57 ms 61560 KB Output is correct
5 Correct 58 ms 61560 KB Output is correct
6 Correct 59 ms 61560 KB Output is correct
7 Correct 81 ms 61560 KB Output is correct
8 Correct 56 ms 61536 KB Output is correct
9 Correct 56 ms 61432 KB Output is correct
10 Correct 57 ms 61432 KB Output is correct
11 Correct 73 ms 61560 KB Output is correct
12 Correct 56 ms 61560 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 61432 KB Output is correct
2 Correct 55 ms 61432 KB Output is correct
3 Correct 57 ms 61564 KB Output is correct
4 Correct 57 ms 61560 KB Output is correct
5 Correct 58 ms 61560 KB Output is correct
6 Correct 59 ms 61560 KB Output is correct
7 Correct 81 ms 61560 KB Output is correct
8 Correct 56 ms 61536 KB Output is correct
9 Correct 56 ms 61432 KB Output is correct
10 Correct 57 ms 61432 KB Output is correct
11 Correct 73 ms 61560 KB Output is correct
12 Correct 56 ms 61560 KB Output is correct
13 Correct 64 ms 61816 KB Output is correct
14 Correct 66 ms 62200 KB Output is correct
15 Correct 72 ms 62628 KB Output is correct
16 Correct 62 ms 62968 KB Output is correct
17 Correct 59 ms 61816 KB Output is correct
18 Correct 61 ms 62200 KB Output is correct
19 Correct 63 ms 62584 KB Output is correct
20 Correct 62 ms 62968 KB Output is correct
21 Correct 62 ms 61816 KB Output is correct
22 Correct 63 ms 62200 KB Output is correct
23 Correct 66 ms 62584 KB Output is correct
24 Correct 63 ms 62840 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 4804 ms 104292 KB Output is correct
2 Correct 4674 ms 142960 KB Output is correct
3 Correct 4006 ms 180512 KB Output is correct
4 Correct 2924 ms 218892 KB Output is correct
5 Execution timed out 5083 ms 98756 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 61432 KB Output is correct
2 Correct 55 ms 61432 KB Output is correct
3 Correct 57 ms 61564 KB Output is correct
4 Correct 57 ms 61560 KB Output is correct
5 Correct 58 ms 61560 KB Output is correct
6 Correct 59 ms 61560 KB Output is correct
7 Correct 81 ms 61560 KB Output is correct
8 Correct 56 ms 61536 KB Output is correct
9 Correct 56 ms 61432 KB Output is correct
10 Correct 57 ms 61432 KB Output is correct
11 Correct 73 ms 61560 KB Output is correct
12 Correct 56 ms 61560 KB Output is correct
13 Correct 64 ms 61816 KB Output is correct
14 Correct 66 ms 62200 KB Output is correct
15 Correct 72 ms 62628 KB Output is correct
16 Correct 62 ms 62968 KB Output is correct
17 Correct 59 ms 61816 KB Output is correct
18 Correct 61 ms 62200 KB Output is correct
19 Correct 63 ms 62584 KB Output is correct
20 Correct 62 ms 62968 KB Output is correct
21 Correct 62 ms 61816 KB Output is correct
22 Correct 63 ms 62200 KB Output is correct
23 Correct 66 ms 62584 KB Output is correct
24 Correct 63 ms 62840 KB Output is correct
25 Correct 4804 ms 104292 KB Output is correct
26 Correct 4674 ms 142960 KB Output is correct
27 Correct 4006 ms 180512 KB Output is correct
28 Correct 2924 ms 218892 KB Output is correct
29 Execution timed out 5083 ms 98756 KB Time limit exceeded
30 Halted 0 ms 0 KB -