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Submission #197997

# Submission time Handle Problem Language Result Execution time Memory
197997 2020-01-24T12:58:17 Z ami Klasika (COCI20_klasika) C++17
110 / 110
 1332 ms 281708 KB 
#include <bits/stdc++.h>
#define sz(c)       int(c.size())
#define rep(i,a,b)  for (int i=a; i<(b); ++i)
#define per(i,a,b)  for (int i=(b)-1; i>=(a); --i)
#define fore(c,...) for (auto __VA_ARGS__:(c))
using namespace std;
typedef long long ll;

struct node {
	int next[2];
	node() {
		next[0]=next[1]=-1;
	}
};


const int bitlen=30;
struct trie {
	vector<node> t;
	trie():t(1) {}

	void new_node(int v,int bit) {
		t[v].next[bit]=sz(t);
		t.emplace_back();
	}

	void add(int x) {
		int v=0;
		per(i,0,bitlen+1) {
			int bit=x>>i&1;
			if (t[v].next[bit]==-1) new_node(v,bit);
			v=t[v].next[bit];
		}
	}

	int getmax(int x) const {
		int v=0,res=0;
		per(i,0,bitlen+1) {
			int bit=x>>i&1;
			if (t[v].next[!bit]!=-1) {
				res^=1<<i;
				bit=!bit;
			}
			if (t[v].next[bit]==-1) return 0;
			v=t[v].next[bit];
		}
		return res;
	}
};


struct segtree {
	using Item = trie;
	using Change = int;
	using Result = int;

	int n;
	vector<Item> tr;
	vector<bool> used;

	explicit segtree(int sz):n(sz),tr(2*n),used(2*n) {}

	static void modify(Item &it, const Change &x) {
		it.add(x);
	}

	static void check(Result &res, const Item &it, int x) {
		res=max(res,it.getmax(x));
	}

	void mark_used(int l, int r) {
		l+=n, r+=n;
		while (l<=r) {
			if (l%2==1) used[l]=true;
			if (r%2==0) used[r]=true;
			l=(l+1)/2;
			r=(r-1)/2;
		}
	}

	void add(int i, const Change &x) {
		for (i+=n; i>0; i/=2) if (used[i]) modify(tr[i],x);
	}

	Result query(int l, int r, int x) const {
		Result res{};
		l+=n, r+=n;
		while (l<=r) {
			if (l%2==1) check(res,tr[l],x);
			if (r%2==0) check(res,tr[r],x);
			l=(l+1)/2;
			r=(r-1)/2;
		}
		return res;
	}

	Item& operator[](int i) {
		return tr[i+n];
	}
};

vector<vector<int>> adj(1);
vector<int> xum(1);
vector<pair<int,int>> tio(1);

int main() {
	cin.tie(0);
	ios_base::sync_with_stdio(0);
	cout<<fixed<<setprecision(10);

	int Q;
	cin>>Q;
	vector<tuple<string,int,int>> qs;
	rep(i,0,Q) {
		string s;
		int a,b;
		cin>>s>>a>>b;
		if (s=="Add") {
			a--;
			int v=sz(adj);
			adj[a].emplace_back(v);
			adj.emplace_back();
			tio.emplace_back();
			xum.emplace_back(xum[a]^b);
			a=v;
		} else {
			a--, b--;
		}
		qs.emplace_back(s,a,b);
	}

	int time=0;
	function<void(int)> dfs=[&](int v) {
		tio[v].first=time++;
		fore(adj[v],u) dfs(u);
		tio[v].second=time-1;
	};
	dfs(0);

	segtree st(sz(xum));
	fore(qs,&q) {
		string s;
		int a,b;
		tie(s,a,b)=q;
		if (s=="Query") st.mark_used(tio[b].first,tio[b].second);
	}

	st.add(0,xum[0]);
	fore(qs,&q) {
		string s;
		int a,b;
		tie(s,a,b)=q;
		if (s=="Add") {
			st.add(tio[a].first,xum[a]);
		} else {
			cout<<st.query(tio[b].first,tio[b].second,xum[a])<<'\n';
		}
	}
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 248 KB Output is correct
3 Correct 4 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 248 KB Output is correct
3 Correct 4 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 7 ms 1016 KB Output is correct
14 Correct 7 ms 1532 KB Output is correct
15 Correct 9 ms 1972 KB Output is correct
16 Correct 8 ms 2292 KB Output is correct
17 Correct 5 ms 888 KB Output is correct
18 Correct 6 ms 1400 KB Output is correct
19 Correct 6 ms 1656 KB Output is correct
20 Correct 7 ms 1784 KB Output is correct
21 Correct 6 ms 1016 KB Output is correct
22 Correct 6 ms 1504 KB Output is correct
23 Correct 7 ms 1784 KB Output is correct
24 Correct 7 ms 2040 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 533 ms 27572 KB Output is correct
2 Correct 512 ms 44268 KB Output is correct
3 Correct 479 ms 59692 KB Output is correct
4 Correct 358 ms 72244 KB Output is correct
5 Correct 877 ms 28320 KB Output is correct
6 Correct 851 ms 47896 KB Output is correct
7 Correct 500 ms 56784 KB Output is correct
8 Correct 676 ms 73260 KB Output is correct
9 Correct 885 ms 28968 KB Output is correct
10 Correct 830 ms 47160 KB Output is correct
11 Correct 702 ms 55224 KB Output is correct
12 Correct 471 ms 73724 KB Output is correct

Subtask #4
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 248 KB Output is correct
3 Correct 4 ms 504 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 7 ms 1016 KB Output is correct
14 Correct 7 ms 1532 KB Output is correct
15 Correct 9 ms 1972 KB Output is correct
16 Correct 8 ms 2292 KB Output is correct
17 Correct 5 ms 888 KB Output is correct
18 Correct 6 ms 1400 KB Output is correct
19 Correct 6 ms 1656 KB Output is correct
20 Correct 7 ms 1784 KB Output is correct
21 Correct 6 ms 1016 KB Output is correct
22 Correct 6 ms 1504 KB Output is correct
23 Correct 7 ms 1784 KB Output is correct
24 Correct 7 ms 2040 KB Output is correct
25 Correct 533 ms 27572 KB Output is correct
26 Correct 512 ms 44268 KB Output is correct
27 Correct 479 ms 59692 KB Output is correct
28 Correct 358 ms 72244 KB Output is correct
29 Correct 877 ms 28320 KB Output is correct
30 Correct 851 ms 47896 KB Output is correct
31 Correct 500 ms 56784 KB Output is correct
32 Correct 676 ms 73260 KB Output is correct
33 Correct 885 ms 28968 KB Output is correct
34 Correct 830 ms 47160 KB Output is correct
35 Correct 702 ms 55224 KB Output is correct
36 Correct 471 ms 73724 KB Output is correct
37 Correct 1192 ms 84292 KB Output is correct
38 Correct 1266 ms 158528 KB Output is correct
39 Correct 1332 ms 229812 KB Output is correct
40 Correct 1133 ms 281708 KB Output is correct
41 Correct 618 ms 79976 KB Output is correct
42 Correct 908 ms 150180 KB Output is correct
43 Correct 1165 ms 207988 KB Output is correct
44 Correct 1201 ms 232716 KB Output is correct
45 Correct 741 ms 82664 KB Output is correct
46 Correct 910 ms 157432 KB Output is correct
47 Correct 1008 ms 218912 KB Output is correct
48 Correct 967 ms 260548 KB Output is correct