oj.uz

Submission #492737

# Submission time Handle Problem Language Result Execution time Memory
492737 2021-12-08T16:14:36 Z hollwo_pelw Chessboard (IZhO18_chessboard) C++17
100 / 100
 319 ms 5828 KB 
/*
// is short or still long ???
hollwo_pelw's template(short)
// Note : -Dhollwo_pelw_local
*/

#include <bits/stdc++.h>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/trie_policy.hpp>
// #include <ext/rope>

using namespace std;
// using namespace __gnu_pbds;
// using namespace __gnu_cxx;

void FAST_IO(string filein = "", string fileout = "", string fileerr = ""){
	if (fopen(filein.c_str(), "r")){
		freopen(filein.c_str(), "r", stdin);
		freopen(fileout.c_str(), "w", stdout);
#ifdef hollwo_pelw_local
		freopen(fileerr.c_str(), "w", stderr);
#endif
	}
	cin.tie(0), cout.tie(0) -> sync_with_stdio(0);
}

void Hollwo_Pelw();

signed main(){
#ifdef hollwo_pelw_local
	FAST_IO("input.inp", "output.out", "error.err");
	auto start = chrono::steady_clock::now();
#else
	FAST_IO("hollwo_pelw.inp", "hollwo_pelw.out");
#endif
	int testcases = 1;
	// cin >> testcases;
	for (int test = 1; test <= testcases; test++){
		// cout << "Case #" << test << ": ";
		Hollwo_Pelw();
	}
#ifdef hollwo_pelw_local
	auto end = chrono::steady_clock::now();
	cout << "\nExcution time : " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
#endif
	return 0;
}

#define int long long

const int N = 1e5 + 5;

struct rect_t {
	int x1, y1, x2, y2;
	rect_t(int _x1 = 0, int _y1 = 0, int _x2 = 0, int _y2 = 0)
		: x1(_x1), y1(_y1), x2(_x2), y2(_y2) {}
} a[N];

int n, m;

inline int get(int i, int k) {
	return min(i % (2 * k), k) + i / (2 * k) * k;
}

inline int solve(int k) {
	int cnt = n * n / (k * k);
	int res = (cnt / 2) * (k * k);

	// cout << "solve " << k << '\n';

	for (int i = 1; i <= m; i++) {
		auto [x1, y1, x2, y2] = a[i];

		// cout << x1 << ' ' << y1 << ' ' << x2 << ' ' << y2 << '\n';

		int H = x2 - x1 + 1;
		int W = y2 - y1 + 1;
		int tot = H * W;

		// cout << H << ' ' << W << '\n';

		int h = get(x2, k) - get(x1 - 1, k);
		int w = get(y2, k) - get(y1 - 1, k);

		// cout << h << ' ' << w << '\n';

		int black = h * w + (H - h) * (W - w);
		res = res - tot + 2 * black;
	}
	return min(n * n - res, res);
}


void Hollwo_Pelw() {
	cin >> n >> m;
	for (int i = 1, x1, y1, x2, y2; i <= m; i++) {
		cin >> x1 >> y1 >> x2 >> y2;
		a[i] = rect_t(x1, y1, x2, y2);
	}

	int res = 1e18;
	for (int i = 1; i < n; i++) 
		if (n % i == 0) res = min(res, solve(i));

	cout << res;
}

Compilation message

chessboard.cpp: In function 'void FAST_IO(std::string, std::string, std::string)':
chessboard.cpp:18:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   freopen(filein.c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
chessboard.cpp:19:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   freopen(fileout.c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3404 KB Output is correct
2 Correct 2 ms 3440 KB Output is correct
3 Correct 2 ms 3360 KB Output is correct
4 Correct 2 ms 3404 KB Output is correct
5 Correct 2 ms 3404 KB Output is correct
6 Correct 2 ms 3404 KB Output is correct
7 Correct 2 ms 3404 KB Output is correct
8 Correct 2 ms 3404 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 4836 KB Output is correct
2 Correct 7 ms 3788 KB Output is correct
3 Correct 15 ms 4320 KB Output is correct
4 Correct 15 ms 4200 KB Output is correct
5 Correct 21 ms 4740 KB Output is correct
6 Correct 14 ms 4172 KB Output is correct
7 Correct 4 ms 3536 KB Output is correct
8 Correct 14 ms 4300 KB Output is correct
9 Correct 29 ms 5460 KB Output is correct
10 Correct 18 ms 4604 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3444 KB Output is correct
2 Correct 2 ms 3404 KB Output is correct
3 Correct 2 ms 3404 KB Output is correct
4 Correct 2 ms 3404 KB Output is correct
5 Correct 2 ms 3404 KB Output is correct
6 Correct 2 ms 3404 KB Output is correct
7 Correct 2 ms 3404 KB Output is correct
8 Correct 2 ms 3452 KB Output is correct
9 Correct 2 ms 3404 KB Output is correct
10 Correct 2 ms 3404 KB Output is correct
11 Correct 2 ms 3448 KB Output is correct
12 Correct 2 ms 3404 KB Output is correct
13 Correct 2 ms 3404 KB Output is correct
14 Correct 2 ms 3404 KB Output is correct
15 Correct 2 ms 3452 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3444 KB Output is correct
2 Correct 2 ms 3404 KB Output is correct
3 Correct 2 ms 3404 KB Output is correct
4 Correct 2 ms 3404 KB Output is correct
5 Correct 2 ms 3404 KB Output is correct
6 Correct 2 ms 3404 KB Output is correct
7 Correct 2 ms 3404 KB Output is correct
8 Correct 2 ms 3452 KB Output is correct
9 Correct 2 ms 3404 KB Output is correct
10 Correct 2 ms 3404 KB Output is correct
11 Correct 2 ms 3448 KB Output is correct
12 Correct 2 ms 3404 KB Output is correct
13 Correct 2 ms 3404 KB Output is correct
14 Correct 2 ms 3404 KB Output is correct
15 Correct 2 ms 3452 KB Output is correct
16 Correct 10 ms 3788 KB Output is correct
17 Correct 23 ms 4700 KB Output is correct
18 Correct 33 ms 4936 KB Output is correct
19 Correct 73 ms 4828 KB Output is correct
20 Correct 80 ms 5060 KB Output is correct
21 Correct 23 ms 4708 KB Output is correct
22 Correct 2 ms 3404 KB Output is correct
23 Correct 18 ms 4068 KB Output is correct
24 Correct 29 ms 4812 KB Output is correct
25 Correct 5 ms 3532 KB Output is correct
26 Correct 18 ms 4356 KB Output is correct
27 Correct 25 ms 4548 KB Output is correct
28 Correct 34 ms 4988 KB Output is correct
29 Correct 11 ms 3988 KB Output is correct
30 Correct 3 ms 3404 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 4836 KB Output is correct
2 Correct 7 ms 3788 KB Output is correct
3 Correct 15 ms 4320 KB Output is correct
4 Correct 15 ms 4200 KB Output is correct
5 Correct 21 ms 4740 KB Output is correct
6 Correct 14 ms 4172 KB Output is correct
7 Correct 4 ms 3536 KB Output is correct
8 Correct 14 ms 4300 KB Output is correct
9 Correct 29 ms 5460 KB Output is correct
10 Correct 18 ms 4604 KB Output is correct
11 Correct 2 ms 3444 KB Output is correct
12 Correct 2 ms 3404 KB Output is correct
13 Correct 2 ms 3404 KB Output is correct
14 Correct 2 ms 3404 KB Output is correct
15 Correct 2 ms 3404 KB Output is correct
16 Correct 2 ms 3404 KB Output is correct
17 Correct 2 ms 3404 KB Output is correct
18 Correct 2 ms 3452 KB Output is correct
19 Correct 2 ms 3404 KB Output is correct
20 Correct 2 ms 3404 KB Output is correct
21 Correct 2 ms 3448 KB Output is correct
22 Correct 2 ms 3404 KB Output is correct
23 Correct 2 ms 3404 KB Output is correct
24 Correct 2 ms 3404 KB Output is correct
25 Correct 2 ms 3452 KB Output is correct
26 Correct 10 ms 3788 KB Output is correct
27 Correct 23 ms 4700 KB Output is correct
28 Correct 33 ms 4936 KB Output is correct
29 Correct 73 ms 4828 KB Output is correct
30 Correct 80 ms 5060 KB Output is correct
31 Correct 23 ms 4708 KB Output is correct
32 Correct 2 ms 3404 KB Output is correct
33 Correct 18 ms 4068 KB Output is correct
34 Correct 29 ms 4812 KB Output is correct
35 Correct 5 ms 3532 KB Output is correct
36 Correct 18 ms 4356 KB Output is correct
37 Correct 25 ms 4548 KB Output is correct
38 Correct 34 ms 4988 KB Output is correct
39 Correct 11 ms 3988 KB Output is correct
40 Correct 3 ms 3404 KB Output is correct
41 Correct 73 ms 5340 KB Output is correct
42 Correct 37 ms 5572 KB Output is correct
43 Correct 48 ms 5316 KB Output is correct
44 Correct 34 ms 5576 KB Output is correct
45 Correct 33 ms 5728 KB Output is correct
46 Correct 85 ms 5700 KB Output is correct
47 Correct 30 ms 5468 KB Output is correct
48 Correct 43 ms 5472 KB Output is correct
49 Correct 33 ms 5352 KB Output is correct
50 Correct 299 ms 5600 KB Output is correct
51 Correct 306 ms 5736 KB Output is correct
52 Correct 296 ms 5572 KB Output is correct
53 Correct 319 ms 5720 KB Output is correct
54 Correct 282 ms 5492 KB Output is correct
55 Correct 314 ms 5808 KB Output is correct
56 Correct 270 ms 5480 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3404 KB Output is correct
2 Correct 2 ms 3440 KB Output is correct
3 Correct 2 ms 3360 KB Output is correct
4 Correct 2 ms 3404 KB Output is correct
5 Correct 2 ms 3404 KB Output is correct
6 Correct 2 ms 3404 KB Output is correct
7 Correct 2 ms 3404 KB Output is correct
8 Correct 2 ms 3404 KB Output is correct
9 Correct 23 ms 4836 KB Output is correct
10 Correct 7 ms 3788 KB Output is correct
11 Correct 15 ms 4320 KB Output is correct
12 Correct 15 ms 4200 KB Output is correct
13 Correct 21 ms 4740 KB Output is correct
14 Correct 14 ms 4172 KB Output is correct
15 Correct 4 ms 3536 KB Output is correct
16 Correct 14 ms 4300 KB Output is correct
17 Correct 29 ms 5460 KB Output is correct
18 Correct 18 ms 4604 KB Output is correct
19 Correct 2 ms 3444 KB Output is correct
20 Correct 2 ms 3404 KB Output is correct
21 Correct 2 ms 3404 KB Output is correct
22 Correct 2 ms 3404 KB Output is correct
23 Correct 2 ms 3404 KB Output is correct
24 Correct 2 ms 3404 KB Output is correct
25 Correct 2 ms 3404 KB Output is correct
26 Correct 2 ms 3452 KB Output is correct
27 Correct 2 ms 3404 KB Output is correct
28 Correct 2 ms 3404 KB Output is correct
29 Correct 2 ms 3448 KB Output is correct
30 Correct 2 ms 3404 KB Output is correct
31 Correct 2 ms 3404 KB Output is correct
32 Correct 2 ms 3404 KB Output is correct
33 Correct 2 ms 3452 KB Output is correct
34 Correct 10 ms 3788 KB Output is correct
35 Correct 23 ms 4700 KB Output is correct
36 Correct 33 ms 4936 KB Output is correct
37 Correct 73 ms 4828 KB Output is correct
38 Correct 80 ms 5060 KB Output is correct
39 Correct 23 ms 4708 KB Output is correct
40 Correct 2 ms 3404 KB Output is correct
41 Correct 18 ms 4068 KB Output is correct
42 Correct 29 ms 4812 KB Output is correct
43 Correct 5 ms 3532 KB Output is correct
44 Correct 18 ms 4356 KB Output is correct
45 Correct 25 ms 4548 KB Output is correct
46 Correct 34 ms 4988 KB Output is correct
47 Correct 11 ms 3988 KB Output is correct
48 Correct 3 ms 3404 KB Output is correct
49 Correct 73 ms 5340 KB Output is correct
50 Correct 37 ms 5572 KB Output is correct
51 Correct 48 ms 5316 KB Output is correct
52 Correct 34 ms 5576 KB Output is correct
53 Correct 33 ms 5728 KB Output is correct
54 Correct 85 ms 5700 KB Output is correct
55 Correct 30 ms 5468 KB Output is correct
56 Correct 43 ms 5472 KB Output is correct
57 Correct 33 ms 5352 KB Output is correct
58 Correct 299 ms 5600 KB Output is correct
59 Correct 306 ms 5736 KB Output is correct
60 Correct 296 ms 5572 KB Output is correct
61 Correct 319 ms 5720 KB Output is correct
62 Correct 282 ms 5492 KB Output is correct
63 Correct 314 ms 5808 KB Output is correct
64 Correct 270 ms 5480 KB Output is correct
65 Correct 2 ms 3404 KB Output is correct
66 Correct 2 ms 3404 KB Output is correct
67 Correct 312 ms 5656 KB Output is correct
68 Correct 304 ms 5640 KB Output is correct
69 Correct 263 ms 5324 KB Output is correct
70 Correct 293 ms 5596 KB Output is correct
71 Correct 283 ms 5552 KB Output is correct
72 Correct 275 ms 5572 KB Output is correct
73 Correct 274 ms 5444 KB Output is correct
74 Correct 289 ms 5724 KB Output is correct
75 Correct 293 ms 5548 KB Output is correct
76 Correct 299 ms 5720 KB Output is correct
77 Correct 65 ms 5796 KB Output is correct
78 Correct 38 ms 5468 KB Output is correct
79 Correct 47 ms 5456 KB Output is correct
80 Correct 49 ms 5572 KB Output is correct
81 Correct 50 ms 5344 KB Output is correct
82 Correct 44 ms 5596 KB Output is correct
83 Correct 38 ms 5472 KB Output is correct
84 Correct 200 ms 5828 KB Output is correct
85 Correct 316 ms 5700 KB Output is correct
86 Correct 2 ms 3404 KB Output is correct
87 Correct 2 ms 3448 KB Output is correct
88 Correct 315 ms 5820 KB Output is correct
89 Correct 62 ms 3788 KB Output is correct
90 Correct 2 ms 3444 KB Output is correct