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Submission #93165

# Submission time Handle Problem Language Result Execution time Memory
93165 2019-01-06T16:26:08 Z Makhsud Chessboard (IZhO18_chessboard) C++17
47 / 100
 141 ms 2272 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);
			}
		}
		if ( k != n*n ) {
			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 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 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

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 256 KB Output is correct
2 Correct 19 ms 256 KB Output is correct
3 Correct 46 ms 360 KB Output is correct
4 Correct 43 ms 1144 KB Output is correct
5 Correct 63 ms 1528 KB Output is correct
6 Correct 40 ms 1016 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 41 ms 1016 KB Output is correct
9 Correct 101 ms 2248 KB Output is correct
10 Correct 57 ms 1440 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 248 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 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 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 252 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 256 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 376 KB Output is correct
4 Correct 3 ms 248 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 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 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 252 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 3 ms 256 KB Output is correct
16 Correct 26 ms 256 KB Output is correct
17 Correct 69 ms 256 KB Output is correct
18 Correct 89 ms 380 KB Output is correct
19 Correct 128 ms 376 KB Output is correct
20 Correct 140 ms 376 KB Output is correct
21 Correct 67 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 42 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 53 ms 400 KB Output is correct
27 Correct 66 ms 376 KB Output is correct
28 Correct 86 ms 376 KB Output is correct
29 Correct 28 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 256 KB Output is correct
2 Correct 19 ms 256 KB Output is correct
3 Correct 46 ms 360 KB Output is correct
4 Correct 43 ms 1144 KB Output is correct
5 Correct 63 ms 1528 KB Output is correct
6 Correct 40 ms 1016 KB Output is correct
7 Correct 10 ms 376 KB Output is correct
8 Correct 41 ms 1016 KB Output is correct
9 Correct 101 ms 2248 KB Output is correct
10 Correct 57 ms 1440 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 248 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 3 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 256 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 252 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 3 ms 256 KB Output is correct
26 Correct 26 ms 256 KB Output is correct
27 Correct 69 ms 256 KB Output is correct
28 Correct 89 ms 380 KB Output is correct
29 Correct 128 ms 376 KB Output is correct
30 Correct 140 ms 376 KB Output is correct
31 Correct 67 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 42 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 53 ms 400 KB Output is correct
37 Correct 66 ms 376 KB Output is correct
38 Correct 86 ms 376 KB Output is correct
39 Correct 28 ms 376 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Incorrect 141 ms 2272 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 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 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 71 ms 256 KB Output is correct
10 Correct 19 ms 256 KB Output is correct
11 Correct 46 ms 360 KB Output is correct
12 Correct 43 ms 1144 KB Output is correct
13 Correct 63 ms 1528 KB Output is correct
14 Correct 40 ms 1016 KB Output is correct
15 Correct 10 ms 376 KB Output is correct
16 Correct 41 ms 1016 KB Output is correct
17 Correct 101 ms 2248 KB Output is correct
18 Correct 57 ms 1440 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 248 KB Output is correct
23 Correct 2 ms 256 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 3 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 256 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 252 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 2 ms 256 KB Output is correct
33 Correct 3 ms 256 KB Output is correct
34 Correct 26 ms 256 KB Output is correct
35 Correct 69 ms 256 KB Output is correct
36 Correct 89 ms 380 KB Output is correct
37 Correct 128 ms 376 KB Output is correct
38 Correct 140 ms 376 KB Output is correct
39 Correct 67 ms 376 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 42 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 53 ms 400 KB Output is correct
45 Correct 66 ms 376 KB Output is correct
46 Correct 86 ms 376 KB Output is correct
47 Correct 28 ms 376 KB Output is correct
48 Correct 4 ms 376 KB Output is correct
49 Incorrect 141 ms 2272 KB Output isn't correct
50 Halted 0 ms 0 KB -