oj.uz

Submission #684227

# Submission time Handle Problem Language Result Execution time Memory
684227 2023-01-20T18:00:44 Z mychecksedad Chessboard (IZhO18_chessboard) C++17
47 / 100
 2000 ms 5064 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
#define pb push_back
#define all(x) x.begin() x.end()
#define MOD (1e9+7)
const int N = 1e6;

ll n, k, ans = 1e18;
vector<array<ll, 4>> vv;

ll wh(ll x, ll y, ll d){
	x++, y++;
	if(x <= 0 || y <= 0) return 0;
	ll res = (x / d) * (y / d) / 2 * d * d;
	if(x % (2*d) >= d){
		ll y1 = y / (2*d) * 2*d;
		res += y1 / (2*d) * (x % d) * d;
		res += (x % d) * min(d, y % (2*d));
	}else{
		ll y1 = y / (2*d) * 2*d;
		res += y1 / (2*d) * (x % d) * d;
	}
	if(y % (2*d) >= d){
		ll x1 = x / (2*d) * 2*d;
		res += x1 / (2*d) * (y % d) * d;
		res += (y % d) * min(d, x % (2*d));
	}else{
		ll x1 = x / (2*d) * 2*d;
		res += x1 / (2*d) * (y % d) * d;
	}
	return res;
}
ll bl(ll x, ll y, ll d){
	x++, y++;
	if(x <= 0 || y <= 0) return 0;
	return x * y - wh(x - 1, y - 1, d);
}
void solve(){
	cin >> n >> k;
	int a = 0;
	for(int i = 0; i < k; ++i){
		int x1, x2, y1, y2; cin >> x1 >> y1 >> x2 >> y2;
		vv.pb({x1-1,y1-1,x2-1,y2-1});
	}
	for(ll i = 1; i < n; ++i){
		if(n % i == 0){
			for(int rep = 0; rep < 2; ++rep){
				ll c = 0;
				for(auto v: vv){
					ll white = wh(v[2], v[3], i) - wh(v[0] - 1, v[3], i) - wh(v[2], v[1] - 1, i) + wh(v[0] - 1, v[1] - 1, i);					
					ll black = bl(v[2], v[3], i) - bl(v[0] - 1, v[3], i) - bl(v[2], v[1] - 1, i) + bl(v[0] - 1, v[1] - 1, i);					
					ll val = white - black;
					if(!rep) c += val;
					else c -= val;
				}
				ans = min(ans, c + (rep ? (n/i)*(n/i)/2*i*i : ((n/i)*(n/i) + 1)/2*i*i));
			}

		}
	}
	cout << ans;
}

int main(){
	solve();
	return 0;
}

Compilation message

chessboard.cpp: In function 'void solve()':
chessboard.cpp:41:6: warning: unused variable 'a' [-Wunused-variable]
   41 |  int a = 0;
      |      ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 272 KB Output is correct
8 Correct 0 ms 212 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 85 ms 2388 KB Output is correct
2 Correct 21 ms 1468 KB Output is correct
3 Correct 55 ms 2396 KB Output is correct
4 Correct 53 ms 2416 KB Output is correct
5 Correct 72 ms 2452 KB Output is correct
6 Correct 48 ms 2376 KB Output is correct
7 Correct 11 ms 596 KB Output is correct
8 Correct 48 ms 2368 KB Output is correct
9 Correct 118 ms 4416 KB Output is correct
10 Correct 67 ms 2424 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 3 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 44 ms 1356 KB Output is correct
17 Correct 88 ms 4408 KB Output is correct
18 Correct 154 ms 4408 KB Output is correct
19 Correct 643 ms 4440 KB Output is correct
20 Correct 738 ms 4448 KB Output is correct
21 Correct 111 ms 4412 KB Output is correct
22 Correct 3 ms 212 KB Output is correct
23 Correct 109 ms 2520 KB Output is correct
24 Correct 137 ms 4492 KB Output is correct
25 Correct 21 ms 848 KB Output is correct
26 Correct 86 ms 2480 KB Output is correct
27 Correct 139 ms 4468 KB Output is correct
28 Correct 160 ms 4408 KB Output is correct
29 Correct 38 ms 2444 KB Output is correct
30 Correct 5 ms 468 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 85 ms 2388 KB Output is correct
2 Correct 21 ms 1468 KB Output is correct
3 Correct 55 ms 2396 KB Output is correct
4 Correct 53 ms 2416 KB Output is correct
5 Correct 72 ms 2452 KB Output is correct
6 Correct 48 ms 2376 KB Output is correct
7 Correct 11 ms 596 KB Output is correct
8 Correct 48 ms 2368 KB Output is correct
9 Correct 118 ms 4416 KB Output is correct
10 Correct 67 ms 2424 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 3 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 2 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 2 ms 340 KB Output is correct
24 Correct 2 ms 340 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 44 ms 1356 KB Output is correct
27 Correct 88 ms 4408 KB Output is correct
28 Correct 154 ms 4408 KB Output is correct
29 Correct 643 ms 4440 KB Output is correct
30 Correct 738 ms 4448 KB Output is correct
31 Correct 111 ms 4412 KB Output is correct
32 Correct 3 ms 212 KB Output is correct
33 Correct 109 ms 2520 KB Output is correct
34 Correct 137 ms 4492 KB Output is correct
35 Correct 21 ms 848 KB Output is correct
36 Correct 86 ms 2480 KB Output is correct
37 Correct 139 ms 4468 KB Output is correct
38 Correct 160 ms 4408 KB Output is correct
39 Correct 38 ms 2444 KB Output is correct
40 Correct 5 ms 468 KB Output is correct
41 Correct 591 ms 4996 KB Output is correct
42 Correct 176 ms 4920 KB Output is correct
43 Correct 360 ms 5036 KB Output is correct
44 Correct 175 ms 4940 KB Output is correct
45 Correct 131 ms 4944 KB Output is correct
46 Correct 669 ms 5028 KB Output is correct
47 Correct 122 ms 5064 KB Output is correct
48 Correct 267 ms 5020 KB Output is correct
49 Correct 163 ms 5008 KB Output is correct
50 Execution timed out 2025 ms 4920 KB Time limit exceeded
51 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 272 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 85 ms 2388 KB Output is correct
10 Correct 21 ms 1468 KB Output is correct
11 Correct 55 ms 2396 KB Output is correct
12 Correct 53 ms 2416 KB Output is correct
13 Correct 72 ms 2452 KB Output is correct
14 Correct 48 ms 2376 KB Output is correct
15 Correct 11 ms 596 KB Output is correct
16 Correct 48 ms 2368 KB Output is correct
17 Correct 118 ms 4416 KB Output is correct
18 Correct 67 ms 2424 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 3 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 2 ms 340 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 2 ms 340 KB Output is correct
32 Correct 2 ms 340 KB Output is correct
33 Correct 2 ms 340 KB Output is correct
34 Correct 44 ms 1356 KB Output is correct
35 Correct 88 ms 4408 KB Output is correct
36 Correct 154 ms 4408 KB Output is correct
37 Correct 643 ms 4440 KB Output is correct
38 Correct 738 ms 4448 KB Output is correct
39 Correct 111 ms 4412 KB Output is correct
40 Correct 3 ms 212 KB Output is correct
41 Correct 109 ms 2520 KB Output is correct
42 Correct 137 ms 4492 KB Output is correct
43 Correct 21 ms 848 KB Output is correct
44 Correct 86 ms 2480 KB Output is correct
45 Correct 139 ms 4468 KB Output is correct
46 Correct 160 ms 4408 KB Output is correct
47 Correct 38 ms 2444 KB Output is correct
48 Correct 5 ms 468 KB Output is correct
49 Correct 591 ms 4996 KB Output is correct
50 Correct 176 ms 4920 KB Output is correct
51 Correct 360 ms 5036 KB Output is correct
52 Correct 175 ms 4940 KB Output is correct
53 Correct 131 ms 4944 KB Output is correct
54 Correct 669 ms 5028 KB Output is correct
55 Correct 122 ms 5064 KB Output is correct
56 Correct 267 ms 5020 KB Output is correct
57 Correct 163 ms 5008 KB Output is correct
58 Execution timed out 2025 ms 4920 KB Time limit exceeded
59 Halted 0 ms 0 KB -