oj.uz

Submission #380648

# Submission time Handle Problem Language Result Execution time Memory
380648 2021-03-22T16:34:39 Z Fireball0424 Chessboard (IZhO18_chessboard) C++14
100 / 100
 840 ms 5868 KB 
#include <bits/stdc++.h>
#define int long long 
#define INF INT_MAX
#define ld long double
#define fr first
#define sc second
using namespace std;
 
struct rec{
	int x1, y1, x2, y2;
};
 
void solve(){
	int n, k;
	cin >> n >> k;
	vector<rec> v(k);
	for(int i = 0; i < k; i++){
		cin >> v[i].x1 >> v[i].y1 >> v[i].x2 >> v[i].y2; 
	}
	auto cal = [&](int x, int y, int len){
		int sum[4] = {};
		int res = 0, tx = x % len, ty = y % len;
		sum[0] = (x / len) * (y / len) / 2 * len * len;
        if((x % (2 * len)) < len) sum[1] = tx * ((y / len) / 2) * len;
        else sum[1] = tx * ((y / len + 1) / 2) * len;
        if((y % (2 * len)) < len) sum[2] = ty * ((x / len) / 2) * len;
        else sum[2] = ty * ((x / len + 1) / 2) * len;
        if((x % (2 * len) < len) != (y % (2 * len) < len)) sum[3] = tx * ty;
		for(int i = 0; i < 4; i++) res += sum[i];
		return res;
	};
	int mn = n * n;
	for(int i = 1; i < n; i++){
		if(n % i != 0) continue;
		int sum[3] = {};
		for(auto j : v){
			int x1 = j.x1, x2 = j.x2, y1 = j.y1, y2 = j.y2;
			int tmp = cal(x2, y2, i) - cal(x2, y1 - 1, i) - cal(x1 - 1, y2, i) + cal(x1 - 1, y1 - 1, i);
			sum[0] += tmp; // cal black
			sum[1] += (x2 - x1 + 1) * (y2 - y1 + 1) - tmp; // cal white
		}
		sum[2] = cal(n, n, i) - sum[0];
		mn = min(mn, sum[1] + sum[2]);
		mn = min(mn, n * n - sum[1] - sum[2]);
	}
	cout << mn;
}
 
main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;
	//cin >> t;
	while(t--) solve();
}

Compilation message

chessboard.cpp:49:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   49 | main(){
      |      ^

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 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 492 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 3764 KB Output is correct
2 Correct 8 ms 1260 KB Output is correct
3 Correct 19 ms 2540 KB Output is correct
4 Correct 19 ms 2668 KB Output is correct
5 Correct 25 ms 3308 KB Output is correct
6 Correct 17 ms 2284 KB Output is correct
7 Correct 4 ms 876 KB Output is correct
8 Correct 16 ms 2284 KB Output is correct
9 Correct 41 ms 5356 KB Output is correct
10 Correct 23 ms 3052 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 1 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 1 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 14 ms 1644 KB Output is correct
17 Correct 32 ms 4332 KB Output is correct
18 Correct 49 ms 4972 KB Output is correct
19 Correct 165 ms 4460 KB Output is correct
20 Correct 188 ms 4972 KB Output is correct
21 Correct 32 ms 4204 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 31 ms 2284 KB Output is correct
24 Correct 45 ms 4588 KB Output is correct
25 Correct 7 ms 768 KB Output is correct
26 Correct 32 ms 3052 KB Output is correct
27 Correct 47 ms 3564 KB Output is correct
28 Correct 48 ms 4844 KB Output is correct
29 Correct 13 ms 1900 KB Output is correct
30 Correct 2 ms 492 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 3764 KB Output is correct
2 Correct 8 ms 1260 KB Output is correct
3 Correct 19 ms 2540 KB Output is correct
4 Correct 19 ms 2668 KB Output is correct
5 Correct 25 ms 3308 KB Output is correct
6 Correct 17 ms 2284 KB Output is correct
7 Correct 4 ms 876 KB Output is correct
8 Correct 16 ms 2284 KB Output is correct
9 Correct 41 ms 5356 KB Output is correct
10 Correct 23 ms 3052 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 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 14 ms 1644 KB Output is correct
27 Correct 32 ms 4332 KB Output is correct
28 Correct 49 ms 4972 KB Output is correct
29 Correct 165 ms 4460 KB Output is correct
30 Correct 188 ms 4972 KB Output is correct
31 Correct 32 ms 4204 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 31 ms 2284 KB Output is correct
34 Correct 45 ms 4588 KB Output is correct
35 Correct 7 ms 768 KB Output is correct
36 Correct 32 ms 3052 KB Output is correct
37 Correct 47 ms 3564 KB Output is correct
38 Correct 48 ms 4844 KB Output is correct
39 Correct 13 ms 1900 KB Output is correct
40 Correct 2 ms 492 KB Output is correct
41 Correct 150 ms 4844 KB Output is correct
42 Correct 54 ms 5484 KB Output is correct
43 Correct 92 ms 4972 KB Output is correct
44 Correct 53 ms 5356 KB Output is correct
45 Correct 44 ms 5740 KB Output is correct
46 Correct 174 ms 5484 KB Output is correct
47 Correct 39 ms 5100 KB Output is correct
48 Correct 71 ms 5228 KB Output is correct
49 Correct 48 ms 4972 KB Output is correct
50 Correct 769 ms 5356 KB Output is correct
51 Correct 792 ms 5612 KB Output is correct
52 Correct 757 ms 5356 KB Output is correct
53 Correct 810 ms 5612 KB Output is correct
54 Correct 753 ms 5228 KB Output is correct
55 Correct 837 ms 5804 KB Output is correct
56 Correct 718 ms 5100 KB Output is correct

Subtask #6
30.0 / 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 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 492 KB Output is correct
9 Correct 29 ms 3764 KB Output is correct
10 Correct 8 ms 1260 KB Output is correct
11 Correct 19 ms 2540 KB Output is correct
12 Correct 19 ms 2668 KB Output is correct
13 Correct 25 ms 3308 KB Output is correct
14 Correct 17 ms 2284 KB Output is correct
15 Correct 4 ms 876 KB Output is correct
16 Correct 16 ms 2284 KB Output is correct
17 Correct 41 ms 5356 KB Output is correct
18 Correct 23 ms 3052 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 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 14 ms 1644 KB Output is correct
35 Correct 32 ms 4332 KB Output is correct
36 Correct 49 ms 4972 KB Output is correct
37 Correct 165 ms 4460 KB Output is correct
38 Correct 188 ms 4972 KB Output is correct
39 Correct 32 ms 4204 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 31 ms 2284 KB Output is correct
42 Correct 45 ms 4588 KB Output is correct
43 Correct 7 ms 768 KB Output is correct
44 Correct 32 ms 3052 KB Output is correct
45 Correct 47 ms 3564 KB Output is correct
46 Correct 48 ms 4844 KB Output is correct
47 Correct 13 ms 1900 KB Output is correct
48 Correct 2 ms 492 KB Output is correct
49 Correct 150 ms 4844 KB Output is correct
50 Correct 54 ms 5484 KB Output is correct
51 Correct 92 ms 4972 KB Output is correct
52 Correct 53 ms 5356 KB Output is correct
53 Correct 44 ms 5740 KB Output is correct
54 Correct 174 ms 5484 KB Output is correct
55 Correct 39 ms 5100 KB Output is correct
56 Correct 71 ms 5228 KB Output is correct
57 Correct 48 ms 4972 KB Output is correct
58 Correct 769 ms 5356 KB Output is correct
59 Correct 792 ms 5612 KB Output is correct
60 Correct 757 ms 5356 KB Output is correct
61 Correct 810 ms 5612 KB Output is correct
62 Correct 753 ms 5228 KB Output is correct
63 Correct 837 ms 5804 KB Output is correct
64 Correct 718 ms 5100 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Correct 798 ms 5484 KB Output is correct
68 Correct 810 ms 5468 KB Output is correct
69 Correct 697 ms 4844 KB Output is correct
70 Correct 773 ms 5352 KB Output is correct
71 Correct 762 ms 5196 KB Output is correct
72 Correct 779 ms 5104 KB Output is correct
73 Correct 734 ms 4952 KB Output is correct
74 Correct 807 ms 5452 KB Output is correct
75 Correct 766 ms 5228 KB Output is correct
76 Correct 800 ms 5484 KB Output is correct
77 Correct 134 ms 5740 KB Output is correct
78 Correct 54 ms 5228 KB Output is correct
79 Correct 104 ms 4972 KB Output is correct
80 Correct 100 ms 5228 KB Output is correct
81 Correct 89 ms 4844 KB Output is correct
82 Correct 80 ms 5484 KB Output is correct
83 Correct 62 ms 5100 KB Output is correct
84 Correct 472 ms 5612 KB Output is correct
85 Correct 834 ms 5740 KB Output is correct
86 Correct 2 ms 364 KB Output is correct
87 Correct 1 ms 364 KB Output is correct
88 Correct 840 ms 5868 KB Output is correct
89 Correct 161 ms 1388 KB Output is correct
90 Correct 1 ms 364 KB Output is correct