Submission #93081

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
93081	2019-01-06T11:44:55 Z	Makhsud	Chessboard (IZhO18_chessboard)	C++17	47 / 100	143 ms	404 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	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	376 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	73 ms	376 KB	Output is correct
2	Correct	19 ms	392 KB	Output is correct
3	Correct	47 ms	376 KB	Output is correct
4	Correct	43 ms	376 KB	Output is correct
5	Correct	64 ms	380 KB	Output is correct
6	Correct	41 ms	376 KB	Output is correct
7	Correct	10 ms	256 KB	Output is correct
8	Correct	41 ms	256 KB	Output is correct
9	Correct	109 ms	376 KB	Output is correct
10	Correct	57 ms	256 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	256 KB	Output is correct
4	Correct	3 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	3 ms	376 KB	Output is correct
7	Correct	2 ms	252 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 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	376 KB	Output is correct
15	Correct	3 ms	256 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	256 KB	Output is correct
4	Correct	3 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	3 ms	376 KB	Output is correct
7	Correct	2 ms	252 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	256 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	376 KB	Output is correct
15	Correct	3 ms	256 KB	Output is correct
16	Correct	28 ms	256 KB	Output is correct
17	Correct	70 ms	376 KB	Output is correct
18	Correct	91 ms	364 KB	Output is correct
19	Correct	125 ms	376 KB	Output is correct
20	Correct	143 ms	376 KB	Output is correct
21	Correct	69 ms	256 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	44 ms	376 KB	Output is correct
24	Correct	81 ms	404 KB	Output is correct
25	Correct	10 ms	376 KB	Output is correct
26	Correct	51 ms	376 KB	Output is correct
27	Correct	66 ms	376 KB	Output is correct
28	Correct	88 ms	376 KB	Output is correct
29	Correct	30 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	376 KB	Output is correct
2	Correct	19 ms	392 KB	Output is correct
3	Correct	47 ms	376 KB	Output is correct
4	Correct	43 ms	376 KB	Output is correct
5	Correct	64 ms	380 KB	Output is correct
6	Correct	41 ms	376 KB	Output is correct
7	Correct	10 ms	256 KB	Output is correct
8	Correct	41 ms	256 KB	Output is correct
9	Correct	109 ms	376 KB	Output is correct
10	Correct	57 ms	256 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	256 KB	Output is correct
14	Correct	3 ms	256 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	3 ms	376 KB	Output is correct
17	Correct	2 ms	252 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	376 KB	Output is correct
20	Correct	2 ms	256 KB	Output is correct
21	Correct	2 ms	256 KB	Output is correct
22	Correct	2 ms	256 KB	Output is correct
23	Correct	2 ms	256 KB	Output is correct
24	Correct	3 ms	376 KB	Output is correct
25	Correct	3 ms	256 KB	Output is correct
26	Correct	28 ms	256 KB	Output is correct
27	Correct	70 ms	376 KB	Output is correct
28	Correct	91 ms	364 KB	Output is correct
29	Correct	125 ms	376 KB	Output is correct
30	Correct	143 ms	376 KB	Output is correct
31	Correct	69 ms	256 KB	Output is correct
32	Correct	2 ms	376 KB	Output is correct
33	Correct	44 ms	376 KB	Output is correct
34	Correct	81 ms	404 KB	Output is correct
35	Correct	10 ms	376 KB	Output is correct
36	Correct	51 ms	376 KB	Output is correct
37	Correct	66 ms	376 KB	Output is correct
38	Correct	88 ms	376 KB	Output is correct
39	Correct	30 ms	376 KB	Output is correct
40	Correct	4 ms	376 KB	Output is correct
41	Incorrect	139 ms	376 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	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	73 ms	376 KB	Output is correct
10	Correct	19 ms	392 KB	Output is correct
11	Correct	47 ms	376 KB	Output is correct
12	Correct	43 ms	376 KB	Output is correct
13	Correct	64 ms	380 KB	Output is correct
14	Correct	41 ms	376 KB	Output is correct
15	Correct	10 ms	256 KB	Output is correct
16	Correct	41 ms	256 KB	Output is correct
17	Correct	109 ms	376 KB	Output is correct
18	Correct	57 ms	256 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	256 KB	Output is correct
22	Correct	3 ms	256 KB	Output is correct
23	Correct	2 ms	256 KB	Output is correct
24	Correct	3 ms	376 KB	Output is correct
25	Correct	2 ms	252 KB	Output is correct
26	Correct	2 ms	376 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	256 KB	Output is correct
29	Correct	2 ms	256 KB	Output is correct
30	Correct	2 ms	256 KB	Output is correct
31	Correct	2 ms	256 KB	Output is correct
32	Correct	3 ms	376 KB	Output is correct
33	Correct	3 ms	256 KB	Output is correct
34	Correct	28 ms	256 KB	Output is correct
35	Correct	70 ms	376 KB	Output is correct
36	Correct	91 ms	364 KB	Output is correct
37	Correct	125 ms	376 KB	Output is correct
38	Correct	143 ms	376 KB	Output is correct
39	Correct	69 ms	256 KB	Output is correct
40	Correct	2 ms	376 KB	Output is correct
41	Correct	44 ms	376 KB	Output is correct
42	Correct	81 ms	404 KB	Output is correct
43	Correct	10 ms	376 KB	Output is correct
44	Correct	51 ms	376 KB	Output is correct
45	Correct	66 ms	376 KB	Output is correct
46	Correct	88 ms	376 KB	Output is correct
47	Correct	30 ms	376 KB	Output is correct
48	Correct	4 ms	376 KB	Output is correct
49	Incorrect	139 ms	376 KB	Output isn't correct
50	Halted	0 ms	0 KB	-

Submission #93081

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