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Submission #93118

# Submission time Handle Problem Language Result Execution time Memory
93118 2019-01-06T14:21:16 Z Makhsud Chessboard (IZhO18_chessboard) C++17
39 / 100
 141 ms 504 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();
	cout << "0";
	///subt1()
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 376 KB Output is correct
2 Correct 19 ms 376 KB Output is correct
3 Correct 47 ms 256 KB Output is correct
4 Correct 44 ms 376 KB Output is correct
5 Correct 64 ms 256 KB Output is correct
6 Correct 40 ms 376 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 41 ms 376 KB Output is correct
9 Correct 99 ms 356 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 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 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 5 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 376 KB Output is correct
13 Correct 3 ms 380 KB Output is correct
14 Correct 3 ms 380 KB Output is correct
15 Correct 2 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 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 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 5 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 376 KB Output is correct
13 Correct 3 ms 380 KB Output is correct
14 Correct 3 ms 380 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 26 ms 376 KB Output is correct
17 Correct 70 ms 360 KB Output is correct
18 Correct 89 ms 368 KB Output is correct
19 Correct 125 ms 504 KB Output is correct
20 Correct 141 ms 420 KB Output is correct
21 Correct 67 ms 376 KB Output is correct
22 Correct 2 ms 276 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 504 KB Output is correct
27 Correct 64 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 256 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 72 ms 376 KB Output is correct
2 Correct 19 ms 376 KB Output is correct
3 Correct 47 ms 256 KB Output is correct
4 Correct 44 ms 376 KB Output is correct
5 Correct 64 ms 256 KB Output is correct
6 Correct 40 ms 376 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 41 ms 376 KB Output is correct
9 Correct 99 ms 356 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 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 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 5 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 376 KB Output is correct
23 Correct 3 ms 380 KB Output is correct
24 Correct 3 ms 380 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 26 ms 376 KB Output is correct
27 Correct 70 ms 360 KB Output is correct
28 Correct 89 ms 368 KB Output is correct
29 Correct 125 ms 504 KB Output is correct
30 Correct 141 ms 420 KB Output is correct
31 Correct 67 ms 376 KB Output is correct
32 Correct 2 ms 276 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 504 KB Output is correct
37 Correct 64 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 256 KB Output is correct
41 Incorrect 138 ms 476 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 380 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -