Submission #93062

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
93062	2019-01-06T11:01:04 Z	Makhsud	Chessboard (IZhO18_chessboard)	C++17	47 / 100	147 ms	632 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[10005][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	256 KB	Output is correct
7	Correct	2 ms	348 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	74 ms	376 KB	Output is correct
2	Correct	19 ms	256 KB	Output is correct
3	Correct	47 ms	376 KB	Output is correct
4	Correct	45 ms	376 KB	Output is correct
5	Correct	64 ms	376 KB	Output is correct
6	Correct	42 ms	380 KB	Output is correct
7	Correct	20 ms	256 KB	Output is correct
8	Correct	41 ms	252 KB	Output is correct
9	Correct	100 ms	376 KB	Output is correct
10	Correct	57 ms	376 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	376 KB	Output is correct
5	Correct	2 ms	256 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	256 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	3 ms	376 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	376 KB	Output is correct
5	Correct	2 ms	256 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	256 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	3 ms	376 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	256 KB	Output is correct
17	Correct	71 ms	356 KB	Output is correct
18	Correct	89 ms	348 KB	Output is correct
19	Correct	127 ms	376 KB	Output is correct
20	Correct	147 ms	504 KB	Output is correct
21	Correct	70 ms	256 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	376 KB	Output is correct
25	Correct	10 ms	376 KB	Output is correct
26	Correct	51 ms	256 KB	Output is correct
27	Correct	64 ms	376 KB	Output is correct
28	Correct	90 ms	364 KB	Output is correct
29	Correct	29 ms	256 KB	Output is correct
30	Correct	4 ms	256 KB	Output is correct

Subtask #5
0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	74 ms	376 KB	Output is correct
2	Correct	19 ms	256 KB	Output is correct
3	Correct	47 ms	376 KB	Output is correct
4	Correct	45 ms	376 KB	Output is correct
5	Correct	64 ms	376 KB	Output is correct
6	Correct	42 ms	380 KB	Output is correct
7	Correct	20 ms	256 KB	Output is correct
8	Correct	41 ms	252 KB	Output is correct
9	Correct	100 ms	376 KB	Output is correct
10	Correct	57 ms	376 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	2 ms	256 KB	Output is correct
16	Correct	2 ms	256 KB	Output is correct
17	Correct	2 ms	376 KB	Output is correct
18	Correct	2 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	2 ms	376 KB	Output is correct
23	Correct	3 ms	376 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	256 KB	Output is correct
27	Correct	71 ms	356 KB	Output is correct
28	Correct	89 ms	348 KB	Output is correct
29	Correct	127 ms	376 KB	Output is correct
30	Correct	147 ms	504 KB	Output is correct
31	Correct	70 ms	256 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	376 KB	Output is correct
35	Correct	10 ms	376 KB	Output is correct
36	Correct	51 ms	256 KB	Output is correct
37	Correct	64 ms	376 KB	Output is correct
38	Correct	90 ms	364 KB	Output is correct
39	Correct	29 ms	256 KB	Output is correct
40	Correct	4 ms	256 KB	Output is correct
41	Runtime error	4 ms	632 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
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	348 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	74 ms	376 KB	Output is correct
10	Correct	19 ms	256 KB	Output is correct
11	Correct	47 ms	376 KB	Output is correct
12	Correct	45 ms	376 KB	Output is correct
13	Correct	64 ms	376 KB	Output is correct
14	Correct	42 ms	380 KB	Output is correct
15	Correct	20 ms	256 KB	Output is correct
16	Correct	41 ms	252 KB	Output is correct
17	Correct	100 ms	376 KB	Output is correct
18	Correct	57 ms	376 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	376 KB	Output is correct
23	Correct	2 ms	256 KB	Output is correct
24	Correct	2 ms	256 KB	Output is correct
25	Correct	2 ms	376 KB	Output is correct
26	Correct	2 ms	256 KB	Output is correct
27	Correct	2 ms	376 KB	Output is correct
28	Correct	2 ms	376 KB	Output is correct
29	Correct	2 ms	256 KB	Output is correct
30	Correct	2 ms	376 KB	Output is correct
31	Correct	3 ms	376 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	256 KB	Output is correct
35	Correct	71 ms	356 KB	Output is correct
36	Correct	89 ms	348 KB	Output is correct
37	Correct	127 ms	376 KB	Output is correct
38	Correct	147 ms	504 KB	Output is correct
39	Correct	70 ms	256 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	376 KB	Output is correct
43	Correct	10 ms	376 KB	Output is correct
44	Correct	51 ms	256 KB	Output is correct
45	Correct	64 ms	376 KB	Output is correct
46	Correct	90 ms	364 KB	Output is correct
47	Correct	29 ms	256 KB	Output is correct
48	Correct	4 ms	256 KB	Output is correct
49	Runtime error	4 ms	632 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
50	Halted	0 ms	0 KB	-

Submission #93062

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