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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long int
  4. const int N = 2e5 + 10;
  5. int arr[N];
  6. int prefixXor[N];
  7. int main() {
  8. 	int n, q;
  9. 	cin >> n >> q;
  10. 	for (int i = 1; i <= n; i++) {
  11. 		cin >> arr[i];
  12. 		prefixXor[i] = prefixXor[i - 1] ^ arr[i];
  13. 	}
  14. 	while (q--) {
  15. 		int l, r;
  16. 		cin >> l >> r;
  17.  
  18. 		cout << (prefixXor[r] ^ prefixXor[l - 1]) << endl;
  19. 	}
  20. 	return 0;
  21. }
Success #stdin #stdout 0s 5284KB
comments (?)
stdin
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8 4
3 2 4 5 1 1 5 3
2 4
5 6
1 8
3 3
stdout
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3
0
6
4
https://ideone.com/yB4qJj
Range Xor Queries
language:
C++14 (gcc 8.3)
created:
5 days ago
visibility:
public

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