Submission #844109

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
844109	2023-09-05 09:14:39	zwezdinv	Chessboard (IZhO18_chessboard)	C++17	47 / 100	2041 ms	12116 KiB

chessboard

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#include<bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
using ll = long long;
const int N = 2e5;
int cnt0[4 * N], cnt1[4 * N];
bool upd[4 * N];
void push(int node) {
    if (!upd[node]) return;
    swap(cnt0[node], cnt1[node]);
    upd[node << 1] = !upd[node << 1];
    upd[node << 1 | 1] = !upd[node << 1 | 1];
    upd[node] = 0;
}
int n;
void reset(int node = 1, int l = 0, int r = n - 1) {
    upd[node] = 0;
    if (l == r) {
        cnt0[node] = 1;
        cnt1[node] = 0;
        return;
    }
    int m = (l + r) / 2;
    reset(node << 1, l, m);
 
 
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• Subtask 6: 0 / 30