Submission #972602

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
972602	2024-04-30 17:33:28	vjudge1	XORanges (eJOI19_xoranges)	C++17	100 / 100	144 ms	6080 KiB

xoranges

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#include <bits/stdc++.h>
using namespace std;
int n, q, od[600010], ev[600010], c, id, va, in, st, en, f, s, enu, onu;
void update(int l, int r, int idx, int val, int node, int (&seg)[600010]) {
    if(l == r) {
        seg[node] = val;
        return;
    }
    int mid = (l+r)>>1;
    if(idx <= mid) update(l, mid, idx, val, node*2, seg);
    else update(mid+1, r, idx, val, node*2+1, seg);
    seg[node] = seg[node*2]^seg[node*2+1];
}
int query(int l, int r, int ql, int qr, int node, int (&seg)[600010]) {
    if(l > qr || r < ql) return 0;
    if(l >= ql && r <= qr) return seg[node];
    int mid = (l+r)>>1;
    return query(l, mid, ql, qr, node*2, seg)^query(mid+1, r, ql, qr, node*2+1, seg);
}
int main() {
    cin.tie(0)->sync_with_stdio(0);
    cin >> n >> q;
    for(int i=1; i<=n; i++) {
        cin >> in;
        if(i%2) {
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 18 / 18
• Subtask 3: 25 / 25
• Subtask 4: 20 / 20
• Subtask 5: 25 / 25