Submission #43745

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
43745	2018-03-22 03:02:59	nickyrio	Chessboard (IZhO18_chessboard)	C++14	39 / 100	210 ms	17616 KiB

chessboard

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#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define FORD(i, a, b) for (int i = (a); i >= (b); --i)
#define REP(i, a) for (int i = 0; i < (a); ++i)
#define DEBUG(x) { cerr << #x << '=' << x << endl; }
#define Arr(a, l, r) { cerr << #a << " = {"; FOR(_, l, r) cerr << ' ' << a[_]; cerr << "}\n"; }
#define N 1001000
#define pp pair<int, int>
#define endl '\n'
#define IO ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define taskname ""
#define bit(S, i) (((S) >> (i)) & 1)
using namespace std;
long long n, k, xx1[N], xx2[N], xy1[N], xy2[N];
long long solve(int l, int color) {// color = 0 -> Top-left is black
    long long ans = ((1ll * (n / l) * (n / l) + 1 - color) / 2) * l * l ;
    REP(i, k) {
        if (color ^ (((xx1[i] / l) % 2) == (xy1[i] / l) % 2)) ans--;
        else ans++;
    }
    return ans;
} 
int main() {
    #ifdef NERO
    freopen("test.inp","r",stdin);
    freopen("test.out","w",stdout);
    clock_t stime = clock();
    #endif //NERO
    IO;
 
 
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• Subtask 1: 8 / 8
• Subtask 2: 0 / 8
• Subtask 3: 15 / 15
• Subtask 4: 16 / 16
• Subtask 5: 0 / 23
• Subtask 6: 0 / 30