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Submission #93120

# Submission time Handle Problem Language Result Execution time Memory
93120 2019-01-06T14:23:19 Z Makhsud Chessboard (IZhO18_chessboard) C++17
47 / 100
 140 ms 448 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;

ll n, k, cnt, x, y, xx, yy;
ll a[3][3];
ll di[50005][5][5];
void subt1()
{
	ll mn = INT_MAX;
	for ( int i = 1; i < n; i ++ ){
		if ( n % i == 0 ) {
			ll c = 0;
			for ( int j = 1; j <= (n/i); j ++ ) {
				if ( j % 2 ) {
					c += (i*i) * ( ( n/i ) / 2 );
				}
				else {
					c += (i*i) * ( ( ( n/i ) + 1 ) / 2 );
				}
			}
			mn = min( mn, c );
		}
	}
	cout << mn;
	exit(0);
}
void subt2()
{
	ll c1, c2;
	c1 = c2 = 0;
	for ( int i = 1; i <= k; i ++ ) {
		cin >> x >> y >> xx >> yy;
		a[x%2][y%2] ++;
	}
	c1 = (n*n)/2;
	c2 =  c1 + 1;

	c1 = c1 - ( a[1][0] + a[0][1] );
	c1 = c1 + ( a[1][1] + a[0][0] );

	c2 = c2 - ( a[1][1] + a[0][0] );
	c2 = c2 + ( a[1][0] + a[0][1] );

	cout << min( c1, c2 );
	exit(0);
}
void subt_3_4_5()
{
	ll mn = INT_MAX, a1, a2;
	vector <ll> d(0);
	for ( int i = 1; i < n; i ++ ){
		if ( n % i == 0 ) {
			d.push_back( (ll) i );
		}
	}
	for ( int i = 1; i <= k; i ++ ){
		cin >> x >> y >> xx >> yy;
		for ( auto e: d ) {
			ll r, c;
			r = (x/e) + ( (x%e) && 1 );
			c = (y/e) + ( (y%e) && 1 );
			di[e][r%2][c%2] ++;
		}
	}
	for ( auto e: d ) {
		a1 = a2 = 0;
		for ( int i = 1; i <= (n/e); i ++ ) {
			if ( i % 2 ) {
				a1 += (e*e) * ((n/e)/2);
				a2 += (e*e) * (((n/e)+1)/2);
			}
			else {
				a2 += (e*e) * ((n/e)/2);
				a1 += (e*e) * (((n/e)+1)/2);
			}
		}
		a1 -= di[e][1][0] + di[e][0][1];
		a1 += di[e][0][0] + di[e][1][1];
		a2 += di[e][1][0] + di[e][0][1];
		a2 -= di[e][0][0] + di[e][1][1];
		mn = min ( mn, min ( a1, a2 ) );
	}
	cout << mn;
	exit(0);
}
int main()
{
	cin >> n >> k;
	for ( int i = 1; i <= n; i ++ ) {
		if ( n % i == 0 ) cnt ++;
	}
	if ( cnt == 2 ) subt2();
	if ( k > 0 ) subt_3_4_5();
	subt1();
}

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 376 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 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 71 ms 376 KB Output is correct
2 Correct 18 ms 376 KB Output is correct
3 Correct 45 ms 376 KB Output is correct
4 Correct 43 ms 256 KB Output is correct
5 Correct 62 ms 392 KB Output is correct
6 Correct 40 ms 380 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 40 ms 376 KB Output is correct
9 Correct 98 ms 376 KB Output is correct
10 Correct 57 ms 380 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 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 380 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 380 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 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 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 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 380 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 380 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 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 26 ms 256 KB Output is correct
17 Correct 73 ms 364 KB Output is correct
18 Correct 90 ms 368 KB Output is correct
19 Correct 126 ms 376 KB Output is correct
20 Correct 140 ms 408 KB Output is correct
21 Correct 67 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 81 ms 256 KB Output is correct
25 Correct 10 ms 376 KB Output is correct
26 Correct 52 ms 376 KB Output is correct
27 Correct 67 ms 376 KB Output is correct
28 Correct 85 ms 376 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 71 ms 376 KB Output is correct
2 Correct 18 ms 376 KB Output is correct
3 Correct 45 ms 376 KB Output is correct
4 Correct 43 ms 256 KB Output is correct
5 Correct 62 ms 392 KB Output is correct
6 Correct 40 ms 380 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 40 ms 376 KB Output is correct
9 Correct 98 ms 376 KB Output is correct
10 Correct 57 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 380 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 380 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 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 3 ms 376 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 26 ms 256 KB Output is correct
27 Correct 73 ms 364 KB Output is correct
28 Correct 90 ms 368 KB Output is correct
29 Correct 126 ms 376 KB Output is correct
30 Correct 140 ms 408 KB Output is correct
31 Correct 67 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 81 ms 256 KB Output is correct
35 Correct 10 ms 376 KB Output is correct
36 Correct 52 ms 376 KB Output is correct
37 Correct 67 ms 376 KB Output is correct
38 Correct 85 ms 376 KB Output is correct
39 Correct 29 ms 376 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Incorrect 138 ms 448 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 376 KB Output is correct
3 Correct 2 ms 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 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 71 ms 376 KB Output is correct
10 Correct 18 ms 376 KB Output is correct
11 Correct 45 ms 376 KB Output is correct
12 Correct 43 ms 256 KB Output is correct
13 Correct 62 ms 392 KB Output is correct
14 Correct 40 ms 380 KB Output is correct
15 Correct 10 ms 376 KB Output is correct
16 Correct 40 ms 376 KB Output is correct
17 Correct 98 ms 376 KB Output is correct
18 Correct 57 ms 380 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 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 380 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 380 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 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 26 ms 256 KB Output is correct
35 Correct 73 ms 364 KB Output is correct
36 Correct 90 ms 368 KB Output is correct
37 Correct 126 ms 376 KB Output is correct
38 Correct 140 ms 408 KB Output is correct
39 Correct 67 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 81 ms 256 KB Output is correct
43 Correct 10 ms 376 KB Output is correct
44 Correct 52 ms 376 KB Output is correct
45 Correct 67 ms 376 KB Output is correct
46 Correct 85 ms 376 KB Output is correct
47 Correct 29 ms 376 KB Output is correct
48 Correct 4 ms 376 KB Output is correct
49 Incorrect 138 ms 448 KB Output isn't correct
50 Halted 0 ms 0 KB -