oj.uz

Submission #378709

# Submission time Handle Problem Language Result Execution time Memory
378709 2021-03-17T03:27:53 Z Kevin_Zhang_TW Chessboard (IZhO18_chessboard) C++17
70 / 100
 519 ms 2284 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif

const int MAX_N = 300010;

int n, k;
vector<tuple<int,int,int,int>> subr;

ll calgood(int w, int x1, int y1, int x2, int y2) {

//	ll res = 0;
//	for (int i = x1;i <= x2;++i)
//		for (int j = y1;j <= y2;++j) {
//			int need = (1^(i/w) ^ (j/w))&1;
//			res += need;
//		}
//	return res;

	ll res = 0;
	int cnt = 0;
	for (int i = x1;i <= x2;++i) {
		cnt += (1^(i/w)^(y1/w))&1;
	}
	for (int i = y1;i <= y2;++i) {
		if ((y1/w) != (i/w))
			cnt = (x2-x1+1) - cnt;
		res += cnt;
	}
	return res;
}
ll calcost(int wid) {
	ll res = calgood(wid, 0, 0, n-1, n-1);
	for (auto [x1, y1, x2, y2] : subr) {
		ll area = 1ll * (x2-x1+1) * (y2-y1+1);
		ll good = calgood(wid, x1, y1, x2, y2);
		ll bad = area - good;
		res -= good;
		res += bad;
	}

	return min(res, 1ll * n * n - res);
}
int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n >> k;
	DE(n, k);

	//if (n > 1000) return -1;
	subr.resize(k);
	for (auto &[x1, y1, x2, y2] : subr)
		cin >> x1 >> y1 >> x2 >> y2, --x1, --x2, --y1, --y2;

	ll res = 1ll * n * n;

	for (int i = 1;i < n;++i)
		if (n % i == 0)
			chmin(res, calcost(i));

	cout << res << '\n';
}

Compilation message

chessboard.cpp: In function 'int32_t main()':
chessboard.cpp:14:17: warning: statement has no effect [-Wunused-value]
   14 | #define DE(...) 0
      |                 ^
chessboard.cpp:60:2: note: in expansion of macro 'DE'
   60 |  DE(n, k);
      |  ^~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 500 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 1644 KB Output is correct
2 Correct 9 ms 748 KB Output is correct
3 Correct 18 ms 1260 KB Output is correct
4 Correct 18 ms 1260 KB Output is correct
5 Correct 28 ms 1388 KB Output is correct
6 Correct 16 ms 1132 KB Output is correct
7 Correct 4 ms 620 KB Output is correct
8 Correct 15 ms 1132 KB Output is correct
9 Correct 37 ms 2156 KB Output is correct
10 Correct 22 ms 1388 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 13 ms 748 KB Output is correct
17 Correct 29 ms 1644 KB Output is correct
18 Correct 40 ms 1900 KB Output is correct
19 Correct 84 ms 1920 KB Output is correct
20 Correct 97 ms 1900 KB Output is correct
21 Correct 36 ms 1644 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 21 ms 1152 KB Output is correct
24 Correct 35 ms 1772 KB Output is correct
25 Correct 5 ms 492 KB Output is correct
26 Correct 24 ms 1260 KB Output is correct
27 Correct 30 ms 1388 KB Output is correct
28 Correct 38 ms 1772 KB Output is correct
29 Correct 12 ms 876 KB Output is correct
30 Correct 2 ms 364 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 1644 KB Output is correct
2 Correct 9 ms 748 KB Output is correct
3 Correct 18 ms 1260 KB Output is correct
4 Correct 18 ms 1260 KB Output is correct
5 Correct 28 ms 1388 KB Output is correct
6 Correct 16 ms 1132 KB Output is correct
7 Correct 4 ms 620 KB Output is correct
8 Correct 15 ms 1132 KB Output is correct
9 Correct 37 ms 2156 KB Output is correct
10 Correct 22 ms 1388 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 13 ms 748 KB Output is correct
27 Correct 29 ms 1644 KB Output is correct
28 Correct 40 ms 1900 KB Output is correct
29 Correct 84 ms 1920 KB Output is correct
30 Correct 97 ms 1900 KB Output is correct
31 Correct 36 ms 1644 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 21 ms 1152 KB Output is correct
34 Correct 35 ms 1772 KB Output is correct
35 Correct 5 ms 492 KB Output is correct
36 Correct 24 ms 1260 KB Output is correct
37 Correct 30 ms 1388 KB Output is correct
38 Correct 38 ms 1772 KB Output is correct
39 Correct 12 ms 876 KB Output is correct
40 Correct 2 ms 364 KB Output is correct
41 Correct 112 ms 1900 KB Output is correct
42 Correct 49 ms 2156 KB Output is correct
43 Correct 71 ms 1900 KB Output is correct
44 Correct 48 ms 2156 KB Output is correct
45 Correct 41 ms 2284 KB Output is correct
46 Correct 120 ms 2156 KB Output is correct
47 Correct 42 ms 2028 KB Output is correct
48 Correct 61 ms 2028 KB Output is correct
49 Correct 43 ms 2028 KB Output is correct
50 Correct 483 ms 2028 KB Output is correct
51 Correct 498 ms 2284 KB Output is correct
52 Correct 479 ms 2156 KB Output is correct
53 Correct 491 ms 2156 KB Output is correct
54 Correct 466 ms 2156 KB Output is correct
55 Correct 519 ms 2284 KB Output is correct
56 Correct 450 ms 2028 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 500 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 31 ms 1644 KB Output is correct
10 Correct 9 ms 748 KB Output is correct
11 Correct 18 ms 1260 KB Output is correct
12 Correct 18 ms 1260 KB Output is correct
13 Correct 28 ms 1388 KB Output is correct
14 Correct 16 ms 1132 KB Output is correct
15 Correct 4 ms 620 KB Output is correct
16 Correct 15 ms 1132 KB Output is correct
17 Correct 37 ms 2156 KB Output is correct
18 Correct 22 ms 1388 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 13 ms 748 KB Output is correct
35 Correct 29 ms 1644 KB Output is correct
36 Correct 40 ms 1900 KB Output is correct
37 Correct 84 ms 1920 KB Output is correct
38 Correct 97 ms 1900 KB Output is correct
39 Correct 36 ms 1644 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 21 ms 1152 KB Output is correct
42 Correct 35 ms 1772 KB Output is correct
43 Correct 5 ms 492 KB Output is correct
44 Correct 24 ms 1260 KB Output is correct
45 Correct 30 ms 1388 KB Output is correct
46 Correct 38 ms 1772 KB Output is correct
47 Correct 12 ms 876 KB Output is correct
48 Correct 2 ms 364 KB Output is correct
49 Correct 112 ms 1900 KB Output is correct
50 Correct 49 ms 2156 KB Output is correct
51 Correct 71 ms 1900 KB Output is correct
52 Correct 48 ms 2156 KB Output is correct
53 Correct 41 ms 2284 KB Output is correct
54 Correct 120 ms 2156 KB Output is correct
55 Correct 42 ms 2028 KB Output is correct
56 Correct 61 ms 2028 KB Output is correct
57 Correct 43 ms 2028 KB Output is correct
58 Correct 483 ms 2028 KB Output is correct
59 Correct 498 ms 2284 KB Output is correct
60 Correct 479 ms 2156 KB Output is correct
61 Correct 491 ms 2156 KB Output is correct
62 Correct 466 ms 2156 KB Output is correct
63 Correct 519 ms 2284 KB Output is correct
64 Correct 450 ms 2028 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Incorrect 1 ms 364 KB Output isn't correct
67 Halted 0 ms 0 KB -