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Submission #223301

# Submission time Handle Problem Language Result Execution time Memory
223301 2020-04-15T06:58:44 Z oolimry Klasika (COCI20_klasika) C++14
33 / 110
 5000 ms 30040 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;

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 9 ms 5376 KB Output is correct
2 Correct 9 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 8 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 12 ms 5632 KB Output is correct
9 Correct 10 ms 5376 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 9 ms 5376 KB Output is correct
2 Correct 9 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 8 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 12 ms 5632 KB Output is correct
9 Correct 10 ms 5376 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 45 ms 7288 KB Output is correct
14 Correct 53 ms 8824 KB Output is correct
15 Correct 63 ms 10104 KB Output is correct
16 Correct 61 ms 11128 KB Output is correct
17 Correct 47 ms 7160 KB Output is correct
18 Correct 60 ms 8696 KB Output is correct
19 Correct 64 ms 9976 KB Output is correct
20 Correct 55 ms 11004 KB Output is correct
21 Correct 57 ms 7288 KB Output is correct
22 Correct 65 ms 8568 KB Output is correct
23 Correct 64 ms 9976 KB Output is correct
24 Correct 54 ms 11004 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5065 ms 30040 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 5376 KB Output is correct
2 Correct 9 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 8 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 12 ms 5632 KB Output is correct
9 Correct 10 ms 5376 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 45 ms 7288 KB Output is correct
14 Correct 53 ms 8824 KB Output is correct
15 Correct 63 ms 10104 KB Output is correct
16 Correct 61 ms 11128 KB Output is correct
17 Correct 47 ms 7160 KB Output is correct
18 Correct 60 ms 8696 KB Output is correct
19 Correct 64 ms 9976 KB Output is correct
20 Correct 55 ms 11004 KB Output is correct
21 Correct 57 ms 7288 KB Output is correct
22 Correct 65 ms 8568 KB Output is correct
23 Correct 64 ms 9976 KB Output is correct
24 Correct 54 ms 11004 KB Output is correct
25 Execution timed out 5065 ms 30040 KB Time limit exceeded
26 Halted 0 ms 0 KB -