Submission #93090

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
93090	2019-01-06T12:17:15 Z	Makhsud	Chessboard (IZhO18_chessboard)	C++17	47 / 100	141 ms	504 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 {
				cnt1 += ( (e*e) * ( ( ( n / e ) +1 ) / 2 ) );
				cnt2 += ( (e*e) * ( ( n / e ) / 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	376 KB	Output is correct
2	Correct	2 ms	376 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	256 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	73 ms	256 KB	Output is correct
2	Correct	19 ms	376 KB	Output is correct
3	Correct	50 ms	376 KB	Output is correct
4	Correct	45 ms	256 KB	Output is correct
5	Correct	62 ms	360 KB	Output is correct
6	Correct	40 ms	256 KB	Output is correct
7	Correct	10 ms	296 KB	Output is correct
8	Correct	40 ms	376 KB	Output is correct
9	Correct	98 ms	256 KB	Output is correct
10	Correct	58 ms	252 KB	Output is correct

Subtask #3
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	3 ms	380 KB	Output is correct
5	Correct	3 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	2 ms	376 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	380 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	344 KB	Output is correct
14	Correct	2 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	376 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	3 ms	380 KB	Output is correct
5	Correct	3 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	2 ms	376 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	380 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	344 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	3 ms	376 KB	Output is correct
16	Correct	26 ms	376 KB	Output is correct
17	Correct	69 ms	476 KB	Output is correct
18	Correct	89 ms	376 KB	Output is correct
19	Correct	127 ms	376 KB	Output is correct
20	Correct	140 ms	504 KB	Output is correct
21	Correct	67 ms	360 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	43 ms	376 KB	Output is correct
24	Correct	80 ms	400 KB	Output is correct
25	Correct	10 ms	256 KB	Output is correct
26	Correct	51 ms	376 KB	Output is correct
27	Correct	65 ms	376 KB	Output is correct
28	Correct	86 ms	360 KB	Output is correct
29	Correct	29 ms	376 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	73 ms	256 KB	Output is correct
2	Correct	19 ms	376 KB	Output is correct
3	Correct	50 ms	376 KB	Output is correct
4	Correct	45 ms	256 KB	Output is correct
5	Correct	62 ms	360 KB	Output is correct
6	Correct	40 ms	256 KB	Output is correct
7	Correct	10 ms	296 KB	Output is correct
8	Correct	40 ms	376 KB	Output is correct
9	Correct	98 ms	256 KB	Output is correct
10	Correct	58 ms	252 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	3 ms	380 KB	Output is correct
15	Correct	3 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	2 ms	376 KB	Output is correct
19	Correct	2 ms	256 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	380 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	344 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	3 ms	376 KB	Output is correct
26	Correct	26 ms	376 KB	Output is correct
27	Correct	69 ms	476 KB	Output is correct
28	Correct	89 ms	376 KB	Output is correct
29	Correct	127 ms	376 KB	Output is correct
30	Correct	140 ms	504 KB	Output is correct
31	Correct	67 ms	360 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	43 ms	376 KB	Output is correct
34	Correct	80 ms	400 KB	Output is correct
35	Correct	10 ms	256 KB	Output is correct
36	Correct	51 ms	376 KB	Output is correct
37	Correct	65 ms	376 KB	Output is correct
38	Correct	86 ms	360 KB	Output is correct
39	Correct	29 ms	376 KB	Output is correct
40	Correct	4 ms	376 KB	Output is correct
41	Incorrect	141 ms	444 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	376 KB	Output is correct
2	Correct	2 ms	376 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	256 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	73 ms	256 KB	Output is correct
10	Correct	19 ms	376 KB	Output is correct
11	Correct	50 ms	376 KB	Output is correct
12	Correct	45 ms	256 KB	Output is correct
13	Correct	62 ms	360 KB	Output is correct
14	Correct	40 ms	256 KB	Output is correct
15	Correct	10 ms	296 KB	Output is correct
16	Correct	40 ms	376 KB	Output is correct
17	Correct	98 ms	256 KB	Output is correct
18	Correct	58 ms	252 KB	Output is correct
19	Correct	2 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	3 ms	380 KB	Output is correct
23	Correct	3 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	2 ms	376 KB	Output is correct
27	Correct	2 ms	256 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	380 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	2 ms	344 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	3 ms	376 KB	Output is correct
34	Correct	26 ms	376 KB	Output is correct
35	Correct	69 ms	476 KB	Output is correct
36	Correct	89 ms	376 KB	Output is correct
37	Correct	127 ms	376 KB	Output is correct
38	Correct	140 ms	504 KB	Output is correct
39	Correct	67 ms	360 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	43 ms	376 KB	Output is correct
42	Correct	80 ms	400 KB	Output is correct
43	Correct	10 ms	256 KB	Output is correct
44	Correct	51 ms	376 KB	Output is correct
45	Correct	65 ms	376 KB	Output is correct
46	Correct	86 ms	360 KB	Output is correct
47	Correct	29 ms	376 KB	Output is correct
48	Correct	4 ms	376 KB	Output is correct
49	Incorrect	141 ms	444 KB	Output isn't correct
50	Halted	0 ms	0 KB	-

Submission #93090

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