oj.uz

Submission #763401

# Submission time Handle Problem Language Result Execution time Memory
763401 2023-06-22T09:18:33 Z Halym2007 XORanges (eJOI19_xoranges) C++11
100 / 100
 129 ms 11276 KB 
#include <bits/stdc++.h>
#define ff first
#define ss second
#define sz size()
#define pb push_back
using namespace std;
typedef long long ll;
const int N = 600005;
// const int mod = 1e9+7;
// ll bigmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
void solve();
int n, q;
ll a[200005], sum, st[N][2];
 
 
void build (int ind, int x, int y) {
	if (x == y) {
		if (x % 2 == 1) {
			st[ind][1] = a[x]; 
		}
		else {
			st[ind][0] = a[x];
		}
		return;
	}
	build (ind * 2, x, (x + y) / 2);
	build (ind * 2 + 1, (x + y) / 2 + 1, y);
	st[ind][0] = st[ind * 2][0] ^ st[ind * 2 + 1][0];
	st[ind][1] = st[ind * 2][1] ^ st[ind * 2 + 1][1];
}	
 
 
 
void update (int ind, int l, int r, int x, int y, int op) {
	if (l == r and l == x) {
		st[ind][op] = y;
		return;
	}
	if(x < l or r < x) return;
	update(ind * 2, l, (l + r) / 2, x, y, op);
	update(ind * 2 + 1, (l + r) / 2 + 1, r, x, y, op);
	st[ind][op] = st[ind * 2][op] ^ st[ind * 2 + 1][op];
}
 
 
void jogap (int ind, int l, int r, int x, int y, int op) {
	if (r < x or y < l) return;
	if (x <= l and r <= y) {
		sum ^= st[ind][op];
		return;
	}
	jogap (ind * 2, l, (l + r) / 2, x, y, op);
	jogap (ind * 2 + 1, (l + r) / 2 + 1, r, x, y, op);
}
 
 
int main() {
	ios::sync_with_stdio(false);
 	cin.tie(0), cout.tie(0);
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
    //  clock_t tStart = clock();
    // printf("Time taken: %.2fs\n", (double)(clock() - tStart)/CLOCKS_PER_SEC);
	cin >> n >> q;
	for (int i = 1; i <= n; ++i) {
		cin >> a[i];
	}
	build (1, 1, n);
	while ( q-- ) {
		int x, l, r;
		cin >> x >> l >> r;
		if (x == 1) {
			a[l] = r;
			update (1, 1, n, l, r, l % 2);
		}
		if (x == 2) {
			if ((l % 2) != (r % 2)) {
				cout << "0\n";
				continue;
			}
			sum = 0;
			jogap (1, 1, n, l, r, l % 2);
			cout << sum << "\n";
		}
	}
}
/*
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*/

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 4 ms 552 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 596 KB Output is correct
14 Correct 2 ms 596 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 118 ms 11212 KB Output is correct
2 Correct 92 ms 11172 KB Output is correct
3 Correct 114 ms 11276 KB Output is correct
4 Correct 83 ms 11260 KB Output is correct
5 Correct 82 ms 11216 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 4 ms 552 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 2 ms 596 KB Output is correct
14 Correct 2 ms 596 KB Output is correct
15 Correct 118 ms 11212 KB Output is correct
16 Correct 92 ms 11172 KB Output is correct
17 Correct 114 ms 11276 KB Output is correct
18 Correct 83 ms 11260 KB Output is correct
19 Correct 82 ms 11216 KB Output is correct
20 Correct 99 ms 10692 KB Output is correct
21 Correct 100 ms 10656 KB Output is correct
22 Correct 129 ms 10672 KB Output is correct
23 Correct 90 ms 11212 KB Output is correct
24 Correct 87 ms 11196 KB Output is correct