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Submission #223296

# Submission time Handle Problem Language Result Execution time Memory
223296 2020-04-15T06:57:03 Z oolimry Klasika (COCI20_klasika) C++14
33 / 110
 5000 ms 30156 KB 
#include <bits/stdc++.h>

using namespace std;

int n = 1;
int cnt = 0;
vector<int> adj[200005];
int low[200005];
int high[200005];
int XOR[200005];

void dfs(int u){
	low[u] = cnt;
	high[u] = cnt;
	cnt++;
	for(int v : adj[u]){
		dfs(v);
		high[u] = max(high[u], high[v]);
	}
}

typedef pair<int,int> ii;
vector<ii> queries;

unordered_map<int, set<int> > m[33];

int main(){
	//freopen("i.txt","r",stdin);
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	int Q; cin >> Q;
	queries.push_back(ii(-1,0));
	
	while(Q--){
		string s; int a, b; 
		cin >> s >> a >> b;
		if(s[0] == 'A' || s[0] == 'a'){
			a--;
			assert(a < n);
			adj[a].push_back(n);
			XOR[n] = XOR[a] ^ b;
			queries.push_back(ii(-1,n));
			n++;
		}
		else{
			assert(a-1 < n);
			assert(b-1 < n);
			queries.push_back(ii(a-1,b-1));
		}
	}
	
	
	dfs(0);
	//for(int i = 0;i < n;i++) cout << low[i] << " " << high[i] << "\n";
	
	for(ii q : queries){
		//cout << q.first << " " << q.second << "\n";
		
		if(q.first == -1){
			int pos = low[q.second];
			int x = XOR[q.second];
			
			for(int b = 0;b <= 32;b++){
				m[b][x].insert(pos);
				x ^= ((x & (1<<b)));
			}
			
			continue;
		}
		
		int other = XOR[q.first];
		int L = low[q.second], R = high[q.second];
		int cur = 0;
		for(int b = 32;b >= 0;b--){
			if((other & (1<<b)) == 0) cur ^= (1 << b);
			
			set<int> s = m[b][cur];
			auto it = s.lower_bound(L);
			if(it == s.end() || *it > R) cur ^= (1 << b);
		}
		
		cout << (cur ^ other) << "\n";
		
	}
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5376 KB Output is correct
2 Correct 8 ms 5376 KB Output is correct
3 Correct 9 ms 5632 KB Output is correct
4 Correct 9 ms 5632 KB Output is correct
5 Correct 9 ms 5248 KB Output is correct
6 Correct 9 ms 5376 KB Output is correct
7 Correct 9 ms 5504 KB Output is correct
8 Correct 9 ms 5632 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 9 ms 5504 KB Output is correct
11 Correct 9 ms 5632 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5376 KB Output is correct
2 Correct 8 ms 5376 KB Output is correct
3 Correct 9 ms 5632 KB Output is correct
4 Correct 9 ms 5632 KB Output is correct
5 Correct 9 ms 5248 KB Output is correct
6 Correct 9 ms 5376 KB Output is correct
7 Correct 9 ms 5504 KB Output is correct
8 Correct 9 ms 5632 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 9 ms 5504 KB Output is correct
11 Correct 9 ms 5632 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct
13 Correct 41 ms 7168 KB Output is correct
14 Correct 52 ms 8696 KB Output is correct
15 Correct 65 ms 10104 KB Output is correct
16 Correct 55 ms 11128 KB Output is correct
17 Correct 42 ms 7032 KB Output is correct
18 Correct 62 ms 8568 KB Output is correct
19 Correct 63 ms 9976 KB Output is correct
20 Correct 56 ms 11000 KB Output is correct
21 Correct 41 ms 7032 KB Output is correct
22 Correct 58 ms 8440 KB Output is correct
23 Correct 63 ms 9848 KB Output is correct
24 Correct 60 ms 11128 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5074 ms 30156 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 5376 KB Output is correct
2 Correct 8 ms 5376 KB Output is correct
3 Correct 9 ms 5632 KB Output is correct
4 Correct 9 ms 5632 KB Output is correct
5 Correct 9 ms 5248 KB Output is correct
6 Correct 9 ms 5376 KB Output is correct
7 Correct 9 ms 5504 KB Output is correct
8 Correct 9 ms 5632 KB Output is correct
9 Correct 8 ms 5248 KB Output is correct
10 Correct 9 ms 5504 KB Output is correct
11 Correct 9 ms 5632 KB Output is correct
12 Correct 9 ms 5760 KB Output is correct
13 Correct 41 ms 7168 KB Output is correct
14 Correct 52 ms 8696 KB Output is correct
15 Correct 65 ms 10104 KB Output is correct
16 Correct 55 ms 11128 KB Output is correct
17 Correct 42 ms 7032 KB Output is correct
18 Correct 62 ms 8568 KB Output is correct
19 Correct 63 ms 9976 KB Output is correct
20 Correct 56 ms 11000 KB Output is correct
21 Correct 41 ms 7032 KB Output is correct
22 Correct 58 ms 8440 KB Output is correct
23 Correct 63 ms 9848 KB Output is correct
24 Correct 60 ms 11128 KB Output is correct
25 Execution timed out 5074 ms 30156 KB Time limit exceeded
26 Halted 0 ms 0 KB -