Submission #446682

#	Time	Username	Problem	Language	Result	Execution time	Memory
446682		fuad27	XORanges (eJOI19_xoranges)	C++14	55 / 100	1084 ms	3524 KiB

xoranges

#include<bits/stdc++.h>
using namespace std;
int main () {
	int n, q;
	cin >> n >> q;
	vector<int> v(n, 0);
	for(int i = 0;i<n;i++) {
		int p;
		cin >> p;
		v[i] = p;
	}
	while(q--) {
	int k;
	cin >> k;
	if(k == 2) {
		int s = 0;
		int l, u;
		cin >> l >> u;
		l--;
		u = min(u, n);
		for(int i = l;i<u;i++) {
			if(((i - l + 1)*(u - i))%2)s^=v[i];
		}
		cout<<s<<endl;
	}
	else {
		int i, j;
		cin >> i >> j;
		v[i-1] = j;
	}
	}
}

• Subtask 1: 12 / 12
• Subtask 2: 18 / 18
• Subtask 3: 25 / 25
• Subtask 4: 0 / 20
• Subtask 5: 0 / 25