oj.uz

Submission #223350

# Submission time Handle Problem Language Result Execution time Memory
223350 2020-04-15T07:39:47 Z errorgorn Klasika (COCI20_klasika) C++14
33 / 110
 5000 ms 218964 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;

inline void read(int& x) {
    x = 0;
    char ch = getchar_unlocked();
    while (ch&16){ //this will break when ‘\n’ or ‘ ‘ is encountered
		x = (x << 3) + (x << 1) + (ch&15);
		ch = getchar_unlocked();
	}
}

inline void read(char& x) {
	x=getchar();
    char ch = getchar_unlocked();
    while (ch&64) ch=getchar_unlocked();
}



int main(){	
	ios::sync_with_stdio(0);
	cout.tie(0);
	
	read(n);
	
	char s;
	int a,b;
	for (int x=0;x<n;x++){
		read(s),read(a),read(b);
		queries.push_back(Q(s,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 64 ms 61688 KB Output is correct
2 Correct 56 ms 61560 KB Output is correct
3 Correct 55 ms 61564 KB Output is correct
4 Correct 58 ms 61560 KB Output is correct
5 Correct 55 ms 61432 KB Output is correct
6 Correct 56 ms 61432 KB Output is correct
7 Correct 56 ms 61560 KB Output is correct
8 Correct 63 ms 61560 KB Output is correct
9 Correct 56 ms 61432 KB Output is correct
10 Correct 57 ms 61560 KB Output is correct
11 Correct 55 ms 61560 KB Output is correct
12 Correct 55 ms 61560 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 61688 KB Output is correct
2 Correct 56 ms 61560 KB Output is correct
3 Correct 55 ms 61564 KB Output is correct
4 Correct 58 ms 61560 KB Output is correct
5 Correct 55 ms 61432 KB Output is correct
6 Correct 56 ms 61432 KB Output is correct
7 Correct 56 ms 61560 KB Output is correct
8 Correct 63 ms 61560 KB Output is correct
9 Correct 56 ms 61432 KB Output is correct
10 Correct 57 ms 61560 KB Output is correct
11 Correct 55 ms 61560 KB Output is correct
12 Correct 55 ms 61560 KB Output is correct
13 Correct 64 ms 61896 KB Output is correct
14 Correct 65 ms 62200 KB Output is correct
15 Correct 63 ms 62584 KB Output is correct
16 Correct 64 ms 62968 KB Output is correct
17 Correct 58 ms 61816 KB Output is correct
18 Correct 59 ms 62200 KB Output is correct
19 Correct 59 ms 62584 KB Output is correct
20 Correct 60 ms 62840 KB Output is correct
21 Correct 59 ms 61816 KB Output is correct
22 Correct 62 ms 62200 KB Output is correct
23 Correct 61 ms 62584 KB Output is correct
24 Correct 61 ms 62840 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 4664 ms 104432 KB Output is correct
2 Correct 4586 ms 142752 KB Output is correct
3 Correct 3921 ms 180496 KB Output is correct
4 Correct 2785 ms 218964 KB Output is correct
5 Execution timed out 5077 ms 99056 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 61688 KB Output is correct
2 Correct 56 ms 61560 KB Output is correct
3 Correct 55 ms 61564 KB Output is correct
4 Correct 58 ms 61560 KB Output is correct
5 Correct 55 ms 61432 KB Output is correct
6 Correct 56 ms 61432 KB Output is correct
7 Correct 56 ms 61560 KB Output is correct
8 Correct 63 ms 61560 KB Output is correct
9 Correct 56 ms 61432 KB Output is correct
10 Correct 57 ms 61560 KB Output is correct
11 Correct 55 ms 61560 KB Output is correct
12 Correct 55 ms 61560 KB Output is correct
13 Correct 64 ms 61896 KB Output is correct
14 Correct 65 ms 62200 KB Output is correct
15 Correct 63 ms 62584 KB Output is correct
16 Correct 64 ms 62968 KB Output is correct
17 Correct 58 ms 61816 KB Output is correct
18 Correct 59 ms 62200 KB Output is correct
19 Correct 59 ms 62584 KB Output is correct
20 Correct 60 ms 62840 KB Output is correct
21 Correct 59 ms 61816 KB Output is correct
22 Correct 62 ms 62200 KB Output is correct
23 Correct 61 ms 62584 KB Output is correct
24 Correct 61 ms 62840 KB Output is correct
25 Correct 4664 ms 104432 KB Output is correct
26 Correct 4586 ms 142752 KB Output is correct
27 Correct 3921 ms 180496 KB Output is correct
28 Correct 2785 ms 218964 KB Output is correct
29 Execution timed out 5077 ms 99056 KB Time limit exceeded
30 Halted 0 ms 0 KB -