oj.uz

Submission #763396

# Submission time Handle Problem Language Result Execution time Memory
763396 2023-06-22T09:15:55 Z Halym2007 XORanges (eJOI19_xoranges) C++11
100 / 100
 102 ms 12876 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 == 2)
			if ((l % 2) != (r % 2)) {
				cout << "0\n";
				continue;
			}
		if (n <= 100 and q <= 100) {
			if (x == 1) {
				a[l] = r;
				continue;
			}
			sum = 0;
			for (int i = l; i <= r; i += 2) {
				sum ^= a[i];		
			}
			cout << sum << "\n";
			continue;
		}
		if (x == 1) {
			a[l] = r;
			update (1, 1, n, l, r, l % 2);
		}
		else {
			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 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 0 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 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 0 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 2 ms 724 KB Output is correct
12 Correct 3 ms 724 KB Output is correct
13 Correct 2 ms 700 KB Output is correct
14 Correct 2 ms 724 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 12876 KB Output is correct
2 Correct 94 ms 12272 KB Output is correct
3 Correct 94 ms 12236 KB Output is correct
4 Correct 89 ms 12356 KB Output is correct
5 Correct 87 ms 12332 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 332 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 0 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 2 ms 724 KB Output is correct
12 Correct 3 ms 724 KB Output is correct
13 Correct 2 ms 700 KB Output is correct
14 Correct 2 ms 724 KB Output is correct
15 Correct 101 ms 12876 KB Output is correct
16 Correct 94 ms 12272 KB Output is correct
17 Correct 94 ms 12236 KB Output is correct
18 Correct 89 ms 12356 KB Output is correct
19 Correct 87 ms 12332 KB Output is correct
20 Correct 102 ms 11408 KB Output is correct
21 Correct 99 ms 11340 KB Output is correct
22 Correct 98 ms 11388 KB Output is correct
23 Correct 84 ms 11952 KB Output is correct
24 Correct 86 ms 11924 KB Output is correct