Submission #492362

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
492362	2021-12-07 03:03:18	Rainbowbunny	Chessboard (IZhO18_chessboard)	C++17	100 / 100	472 ms	4296 KiB

chessboard

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#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1e5 + 5;
int n, k;
int xl[MAXN], xr[MAXN], yl[MAXN], yr[MAXN];
pair <int, int> Get(int p, int id)
{
    if(p < 0)
    {
        return make_pair(0, 0);
    }
    int seg = p / id + 1;
    int cw = (seg + 1) / 2, cb = seg / 2;
    if(cw == cb)
    {
        return make_pair(cw * id, (cb - 1) * id + p % id + 1);
    }
    else
    {
        return make_pair((cw - 1) * id + p % id + 1, cb * id);
    }
}
long long Solve(int id)
{
    long long tmp = 1ll * (n / id) * (n / id) / 2;
    long long curans = tmp * id * id;
 
 
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