Submission #93066

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
93066	2019-01-06T11:07:42 Z	Makhsud	Chessboard (IZhO18_chessboard)	C++17	47 / 100	160 ms	808 KB

chessboard

#include <bits/stdc++.h>
#define ll long long
using namespace std;

ll n, k, x, y, xx, yy;
ll mn = INT_MAX;

ll ch ( ll del ) {
	ll ans = 0;
	if ( del == 1 ) {
		return (n*n)/2;
	}
	for ( int i = 1; i <= (n/del); i ++ ) {
		if ( i % 2 == 1 ) {
			ans += (del*del) * ( (n/del) / 2 );
		}
		else {
			ans += (del*del) * ( ( ( n/del )+1) / 2 );
		}
	}
	return ans;
}
ll a[5][5];
void subt2()
{
	for ( int i = 1; i <= k; i ++ ) {
		cin >> x >> y >> xx >> yy;
		a[x%2][y%2]++;
	}
	ll a1 = 0, a2 = 0;
	a1 = (n*n) / 2;
	a2 = a1 + 1;

	a2 = a2 - (a[1][1] + a[0][0]);
	a2 = a2 + (a[1][0] + a[0][1]);

	a1 = a1 - (a[1][0] + a[0][1]);
	a1 = a1 + (a[1][1] + a[0][0]);

	cout << min ( (a1), (a2) );
}
ll d[50000][5][5];
vector<ll>divs;
void subt3()
{
	for ( int i = 1; i < n; i ++ ){
		if ( n % i == 0 )
			divs.push_back((ll)i);
	}
	for ( int i = 1; i <= k; i ++ ) {
		cin >> x >> y >> xx >> yy;
		for ( auto e: divs ) {
			ll c, r;
			r = ( x / e ) + ( x % e && 1 );
			c = ( y / e ) + ( y % e && 1 );
			d[e][r%2][c%2] ++;
		}
	}
	ll cnt1 = 0, cnt2 = 0, mn = INT_MAX;
	for ( auto e: divs ){
		cnt1 = cnt2 = 0;
		for ( int i = 1; i <= n/e; i ++ ) {
			if ( i % 2 == 1 ) {
				cnt1 += ( (e*e) * ((n/e )/2) );
				cnt2 += ( (e*e) * (((n/e )+1)/2) );
			} else {
				cnt2 += ( (e*e) * ((n/e )/2) );
				cnt1 += ( (e*e) * (((n/e )+1)/2) );
			}
		}
		cnt1 += (d[e][1][1] + d[e][0][0]);
		cnt1 -= (d[e][1][0] + d[e][0][1]);

		cnt2 += (d[e][1][0] + d[e][0][1]);
		cnt2 -= (d[e][1][1] + d[e][0][0]);
		mn = min( mn, min( cnt1, cnt2 ) );
	}
	cout << mn;
}

int main()
{
	cin >> n >> k;
	ll cnt = 0;
	for ( int i = 1; i <= n; i ++ )
		if ( n % i == 0 ) cnt ++;

	if ( cnt == 2 ){
		subt2();
		return 0;
	}

	if ( k != 0 ) {
		subt3();
		return 0;
	}

	for ( int i = 1; i < n; i ++ ) {
		if ( n % i == 0 ) {
			ll an = ch(i);
			mn = min ( mn, an );
		}
	}
	cout << mn;
}

Subtask #1
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	77 ms	632 KB	Output is correct
2	Correct	20 ms	504 KB	Output is correct
3	Correct	46 ms	732 KB	Output is correct
4	Correct	45 ms	808 KB	Output is correct
5	Correct	63 ms	808 KB	Output is correct
6	Correct	40 ms	760 KB	Output is correct
7	Correct	10 ms	504 KB	Output is correct
8	Correct	41 ms	760 KB	Output is correct
9	Correct	103 ms	760 KB	Output is correct
10	Correct	60 ms	632 KB	Output is correct

Subtask #3
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	256 KB	Output is correct
4	Correct	3 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	3 ms	256 KB	Output is correct
9	Correct	3 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	3 ms	256 KB	Output is correct
14	Correct	3 ms	376 KB	Output is correct
15	Correct	3 ms	376 KB	Output is correct

Subtask #4
16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	256 KB	Output is correct
4	Correct	3 ms	256 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	256 KB	Output is correct
8	Correct	3 ms	256 KB	Output is correct
9	Correct	3 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	3 ms	256 KB	Output is correct
14	Correct	3 ms	376 KB	Output is correct
15	Correct	3 ms	376 KB	Output is correct
16	Correct	26 ms	504 KB	Output is correct
17	Correct	69 ms	504 KB	Output is correct
18	Correct	89 ms	504 KB	Output is correct
19	Correct	128 ms	632 KB	Output is correct
20	Correct	160 ms	668 KB	Output is correct
21	Correct	66 ms	504 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	43 ms	504 KB	Output is correct
24	Correct	80 ms	504 KB	Output is correct
25	Correct	10 ms	376 KB	Output is correct
26	Correct	51 ms	504 KB	Output is correct
27	Correct	64 ms	632 KB	Output is correct
28	Correct	85 ms	508 KB	Output is correct
29	Correct	28 ms	504 KB	Output is correct
30	Correct	4 ms	376 KB	Output is correct

Subtask #5
0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	77 ms	632 KB	Output is correct
2	Correct	20 ms	504 KB	Output is correct
3	Correct	46 ms	732 KB	Output is correct
4	Correct	45 ms	808 KB	Output is correct
5	Correct	63 ms	808 KB	Output is correct
6	Correct	40 ms	760 KB	Output is correct
7	Correct	10 ms	504 KB	Output is correct
8	Correct	41 ms	760 KB	Output is correct
9	Correct	103 ms	760 KB	Output is correct
10	Correct	60 ms	632 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	256 KB	Output is correct
13	Correct	2 ms	256 KB	Output is correct
14	Correct	3 ms	256 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	256 KB	Output is correct
18	Correct	3 ms	256 KB	Output is correct
19	Correct	3 ms	376 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	256 KB	Output is correct
23	Correct	3 ms	256 KB	Output is correct
24	Correct	3 ms	376 KB	Output is correct
25	Correct	3 ms	376 KB	Output is correct
26	Correct	26 ms	504 KB	Output is correct
27	Correct	69 ms	504 KB	Output is correct
28	Correct	89 ms	504 KB	Output is correct
29	Correct	128 ms	632 KB	Output is correct
30	Correct	160 ms	668 KB	Output is correct
31	Correct	66 ms	504 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	43 ms	504 KB	Output is correct
34	Correct	80 ms	504 KB	Output is correct
35	Correct	10 ms	376 KB	Output is correct
36	Correct	51 ms	504 KB	Output is correct
37	Correct	64 ms	632 KB	Output is correct
38	Correct	85 ms	508 KB	Output is correct
39	Correct	28 ms	504 KB	Output is correct
40	Correct	4 ms	376 KB	Output is correct
41	Incorrect	140 ms	760 KB	Output isn't correct
42	Halted	0 ms	0 KB	-

Subtask #6
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	256 KB	Output is correct
2	Correct	2 ms	256 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	256 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	77 ms	632 KB	Output is correct
10	Correct	20 ms	504 KB	Output is correct
11	Correct	46 ms	732 KB	Output is correct
12	Correct	45 ms	808 KB	Output is correct
13	Correct	63 ms	808 KB	Output is correct
14	Correct	40 ms	760 KB	Output is correct
15	Correct	10 ms	504 KB	Output is correct
16	Correct	41 ms	760 KB	Output is correct
17	Correct	103 ms	760 KB	Output is correct
18	Correct	60 ms	632 KB	Output is correct
19	Correct	2 ms	256 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	3 ms	256 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	256 KB	Output is correct
25	Correct	2 ms	256 KB	Output is correct
26	Correct	3 ms	256 KB	Output is correct
27	Correct	3 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	2 ms	256 KB	Output is correct
31	Correct	3 ms	256 KB	Output is correct
32	Correct	3 ms	376 KB	Output is correct
33	Correct	3 ms	376 KB	Output is correct
34	Correct	26 ms	504 KB	Output is correct
35	Correct	69 ms	504 KB	Output is correct
36	Correct	89 ms	504 KB	Output is correct
37	Correct	128 ms	632 KB	Output is correct
38	Correct	160 ms	668 KB	Output is correct
39	Correct	66 ms	504 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	43 ms	504 KB	Output is correct
42	Correct	80 ms	504 KB	Output is correct
43	Correct	10 ms	376 KB	Output is correct
44	Correct	51 ms	504 KB	Output is correct
45	Correct	64 ms	632 KB	Output is correct
46	Correct	85 ms	508 KB	Output is correct
47	Correct	28 ms	504 KB	Output is correct
48	Correct	4 ms	376 KB	Output is correct
49	Incorrect	140 ms	760 KB	Output isn't correct
50	Halted	0 ms	0 KB	-

Submission #93066

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 8.0 / 8.0

Subtask #3 15.0 / 15.0

Subtask #4 16.0 / 16.0

Subtask #5 0 / 23.0

Subtask #6 0 / 30.0

Subtask #1
8.0 / 8.0

Subtask #2
8.0 / 8.0

Subtask #3
15.0 / 15.0

Subtask #4
16.0 / 16.0

Subtask #5
0 / 23.0

Subtask #6
0 / 30.0