oj.uz

Submission #379156

# Submission time Handle Problem Language Result Execution time Memory
379156 2021-03-17T10:59:08 Z Fireball0424 Chessboard (IZhO18_chessboard) C++14
100 / 100
 850 ms 3456 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 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 2284 KB Output is correct
2 Correct 7 ms 876 KB Output is correct
3 Correct 18 ms 1516 KB Output is correct
4 Correct 19 ms 1772 KB Output is correct
5 Correct 24 ms 2028 KB Output is correct
6 Correct 17 ms 1388 KB Output is correct
7 Correct 4 ms 620 KB Output is correct
8 Correct 16 ms 1388 KB Output is correct
9 Correct 40 ms 3180 KB Output is correct
10 Correct 23 ms 1900 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 1132 KB Output is correct
17 Correct 31 ms 2924 KB Output is correct
18 Correct 48 ms 3456 KB Output is correct
19 Correct 180 ms 3052 KB Output is correct
20 Correct 184 ms 3436 KB Output is correct
21 Correct 30 ms 3072 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 31 ms 1656 KB Output is correct
24 Correct 44 ms 3180 KB Output is correct
25 Correct 7 ms 640 KB Output is correct
26 Correct 27 ms 2156 KB Output is correct
27 Correct 42 ms 2412 KB Output is correct
28 Correct 48 ms 3308 KB Output is correct
29 Correct 14 ms 1388 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 28 ms 2284 KB Output is correct
2 Correct 7 ms 876 KB Output is correct
3 Correct 18 ms 1516 KB Output is correct
4 Correct 19 ms 1772 KB Output is correct
5 Correct 24 ms 2028 KB Output is correct
6 Correct 17 ms 1388 KB Output is correct
7 Correct 4 ms 620 KB Output is correct
8 Correct 16 ms 1388 KB Output is correct
9 Correct 40 ms 3180 KB Output is correct
10 Correct 23 ms 1900 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 1132 KB Output is correct
27 Correct 31 ms 2924 KB Output is correct
28 Correct 48 ms 3456 KB Output is correct
29 Correct 180 ms 3052 KB Output is correct
30 Correct 184 ms 3436 KB Output is correct
31 Correct 30 ms 3072 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 31 ms 1656 KB Output is correct
34 Correct 44 ms 3180 KB Output is correct
35 Correct 7 ms 640 KB Output is correct
36 Correct 27 ms 2156 KB Output is correct
37 Correct 42 ms 2412 KB Output is correct
38 Correct 48 ms 3308 KB Output is correct
39 Correct 14 ms 1388 KB Output is correct
40 Correct 2 ms 364 KB Output is correct
41 Correct 150 ms 2924 KB Output is correct
42 Correct 54 ms 3308 KB Output is correct
43 Correct 89 ms 2924 KB Output is correct
44 Correct 54 ms 3180 KB Output is correct
45 Correct 51 ms 3436 KB Output is correct
46 Correct 182 ms 3180 KB Output is correct
47 Correct 37 ms 3052 KB Output is correct
48 Correct 78 ms 3052 KB Output is correct
49 Correct 47 ms 2924 KB Output is correct
50 Correct 763 ms 3180 KB Output is correct
51 Correct 823 ms 3328 KB Output is correct
52 Correct 741 ms 3180 KB Output is correct
53 Correct 786 ms 3308 KB Output is correct
54 Correct 724 ms 3052 KB Output is correct
55 Correct 814 ms 3436 KB Output is correct
56 Correct 728 ms 3052 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 364 KB Output is correct
9 Correct 28 ms 2284 KB Output is correct
10 Correct 7 ms 876 KB Output is correct
11 Correct 18 ms 1516 KB Output is correct
12 Correct 19 ms 1772 KB Output is correct
13 Correct 24 ms 2028 KB Output is correct
14 Correct 17 ms 1388 KB Output is correct
15 Correct 4 ms 620 KB Output is correct
16 Correct 16 ms 1388 KB Output is correct
17 Correct 40 ms 3180 KB Output is correct
18 Correct 23 ms 1900 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 1132 KB Output is correct
35 Correct 31 ms 2924 KB Output is correct
36 Correct 48 ms 3456 KB Output is correct
37 Correct 180 ms 3052 KB Output is correct
38 Correct 184 ms 3436 KB Output is correct
39 Correct 30 ms 3072 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 31 ms 1656 KB Output is correct
42 Correct 44 ms 3180 KB Output is correct
43 Correct 7 ms 640 KB Output is correct
44 Correct 27 ms 2156 KB Output is correct
45 Correct 42 ms 2412 KB Output is correct
46 Correct 48 ms 3308 KB Output is correct
47 Correct 14 ms 1388 KB Output is correct
48 Correct 2 ms 364 KB Output is correct
49 Correct 150 ms 2924 KB Output is correct
50 Correct 54 ms 3308 KB Output is correct
51 Correct 89 ms 2924 KB Output is correct
52 Correct 54 ms 3180 KB Output is correct
53 Correct 51 ms 3436 KB Output is correct
54 Correct 182 ms 3180 KB Output is correct
55 Correct 37 ms 3052 KB Output is correct
56 Correct 78 ms 3052 KB Output is correct
57 Correct 47 ms 2924 KB Output is correct
58 Correct 763 ms 3180 KB Output is correct
59 Correct 823 ms 3328 KB Output is correct
60 Correct 741 ms 3180 KB Output is correct
61 Correct 786 ms 3308 KB Output is correct
62 Correct 724 ms 3052 KB Output is correct
63 Correct 814 ms 3436 KB Output is correct
64 Correct 728 ms 3052 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Correct 790 ms 3308 KB Output is correct
68 Correct 782 ms 3180 KB Output is correct
69 Correct 686 ms 2796 KB Output is correct
70 Correct 759 ms 3180 KB Output is correct
71 Correct 763 ms 3052 KB Output is correct
72 Correct 734 ms 3052 KB Output is correct
73 Correct 730 ms 2924 KB Output is correct
74 Correct 783 ms 3180 KB Output is correct
75 Correct 768 ms 3052 KB Output is correct
76 Correct 788 ms 3308 KB Output is correct
77 Correct 131 ms 3436 KB Output is correct
78 Correct 53 ms 3180 KB Output is correct
79 Correct 91 ms 2924 KB Output is correct
80 Correct 103 ms 3052 KB Output is correct
81 Correct 89 ms 2924 KB Output is correct
82 Correct 78 ms 3308 KB Output is correct
83 Correct 62 ms 3052 KB Output is correct
84 Correct 478 ms 3308 KB Output is correct
85 Correct 843 ms 3436 KB Output is correct
86 Correct 2 ms 364 KB Output is correct
87 Correct 1 ms 364 KB Output is correct
88 Correct 850 ms 3436 KB Output is correct
89 Correct 163 ms 876 KB Output is correct
90 Correct 1 ms 364 KB Output is correct