oj.uz

Submission #833544

# Submission time Handle Problem Language Result Execution time Memory
833544 2023-08-22T06:45:35 Z tolbi XORanges (eJOI19_xoranges) C++17
100 / 100
 490 ms 10552 KB 
#include <bits/stdc++.h>
using namespace std;
#define tol(bi) (1LL<<((long long)(bi)))
struct SegTree{
	vector<int> segtree;
	SegTree(int n){
		segtree.resize(tol(ceil(log2(n)+1))-1,0ll);
	}
	void update(int node, int val){
		node+=segtree.size()/2;
		segtree[node]=val;
		while (node){
			node=(node-1)/2;
			segtree[node]=segtree[node*2+1]^segtree[node*2+2];
		}
	}
	int query(int tarl, int tarr, int l = 0, int r = -1, int node = 0){
		if (r==-1)r = segtree.size()/2;
		if (l>=tarl && r<=tarr) return segtree[node];
		if (l>tarr || r<tarl) return 0ll;
		int mid = l+(r-l)/2;
		int lnode = query(tarl, tarr, l, mid, node*2+1);
		int rnode = query(tarl, tarr, mid+1, r, node*2+2);
		return lnode^rnode;
	}
};
int main(){
	int n,q;
	cin>>n>>q;
	vector<SegTree> segtree(2,n);
	for (int i = 0; i < n; ++i)
	{
		int x;cin>>x;
		segtree[(i+1)%2].update(i,x);
	}
	while (q--){
		int ty,x,y;
		cin>>ty>>x>>y;
		if (ty==1){
			segtree[x%2].update(x-1,y);
		}
		else {
			if ((y-x)%2){
				cout<<0<<endl;
				continue;
			}
			else {
				cout<<segtree[x%2].query(x-1,y-1)<<endl;
			}
		}
	}
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 8 ms 596 KB Output is correct
12 Correct 7 ms 568 KB Output is correct
13 Correct 10 ms 596 KB Output is correct
14 Correct 11 ms 596 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 490 ms 10388 KB Output is correct
2 Correct 436 ms 10336 KB Output is correct
3 Correct 461 ms 10552 KB Output is correct
4 Correct 421 ms 10048 KB Output is correct
5 Correct 416 ms 10068 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 8 ms 596 KB Output is correct
12 Correct 7 ms 568 KB Output is correct
13 Correct 10 ms 596 KB Output is correct
14 Correct 11 ms 596 KB Output is correct
15 Correct 490 ms 10388 KB Output is correct
16 Correct 436 ms 10336 KB Output is correct
17 Correct 461 ms 10552 KB Output is correct
18 Correct 421 ms 10048 KB Output is correct
19 Correct 416 ms 10068 KB Output is correct
20 Correct 342 ms 10188 KB Output is correct
21 Correct 319 ms 10104 KB Output is correct
22 Correct 372 ms 10116 KB Output is correct
23 Correct 465 ms 10084 KB Output is correct
24 Correct 393 ms 10056 KB Output is correct