oj.uz

Submission #151480

# Submission time Handle Problem Language Result Execution time Memory
151480 2019-09-03T11:32:14 Z nvmdava Chessboard (IZhO18_chessboard) C++17
100 / 100
 259 ms 2716 KB 
#include <bits/stdc++.h>
using namespace std;
#define N 200002
#define ff first
#define ss second
#define ll long long

vector<int> di;
ll dif[200005];
ll res = 0x3f3f3f3f3f3f3f3f;

int get(int x, int d){
	int r = x / (2 * d) * d;
	int t = x % (2 * d);
	return r + min(t, d);
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);

	mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

	int n, k;
	cin>>n>>k;
	for(int i = 1; i < n; i++)
		if(n % i == 0) di.push_back(i);
	
	for(int i = 0; i < di.size(); i++)
		dif[i] = 1LL * n * n - 1LL * n * n / (1LL * di[i] * di[i]) / 2 * (1LL * di[i] * di[i]);
	
	while(k--){
		int x1, x2, y1, y2;
		cin>>x1>>y1>>x2>>y2;

		for(int i = 0; i < di.size(); i++){
			int ox, ex, oy, ey;
			ex = get(x2, di[i]) - get(x1 - 1, di[i]);
			ox = x2 - x1 + 1 - ex;
			ey = get(y2, di[i]) - get(y1 - 1, di[i]);
			oy = y2 - y1 + 1 - ey;
			dif[i] -= 1LL * ex * ey + 1LL * ox * oy;
			dif[i] += 1LL * ex * oy + 1LL * ey * ox;
		}
	}

	for(int i = 0; i < di.size(); i++){
		res = min(res, min(dif[i], 1LL * n * n - dif[i]));
	}
	cout<<res;
}

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:30:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < di.size(); i++)
                 ~~^~~~~~~~~~~
chessboard.cpp:37:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 0; i < di.size(); i++){
                  ~~^~~~~~~~~~~
chessboard.cpp:48:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < di.size(); i++){
                 ~~^~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 7 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 1796 KB Output is correct
2 Correct 9 ms 888 KB Output is correct
3 Correct 20 ms 1272 KB Output is correct
4 Correct 22 ms 1144 KB Output is correct
5 Correct 27 ms 1656 KB Output is correct
6 Correct 18 ms 1272 KB Output is correct
7 Correct 6 ms 504 KB Output is correct
8 Correct 18 ms 1144 KB Output is correct
9 Correct 43 ms 2412 KB Output is correct
10 Correct 25 ms 1528 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 388 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 2 ms 428 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 388 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 2 ms 428 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 13 ms 760 KB Output is correct
17 Correct 33 ms 1656 KB Output is correct
18 Correct 41 ms 1940 KB Output is correct
19 Correct 73 ms 1780 KB Output is correct
20 Correct 80 ms 1912 KB Output is correct
21 Correct 32 ms 1656 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 22 ms 1016 KB Output is correct
24 Correct 38 ms 1784 KB Output is correct
25 Correct 7 ms 504 KB Output is correct
26 Correct 26 ms 1272 KB Output is correct
27 Correct 32 ms 1528 KB Output is correct
28 Correct 40 ms 1916 KB Output is correct
29 Correct 14 ms 884 KB Output is correct
30 Correct 3 ms 376 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 1796 KB Output is correct
2 Correct 9 ms 888 KB Output is correct
3 Correct 20 ms 1272 KB Output is correct
4 Correct 22 ms 1144 KB Output is correct
5 Correct 27 ms 1656 KB Output is correct
6 Correct 18 ms 1272 KB Output is correct
7 Correct 6 ms 504 KB Output is correct
8 Correct 18 ms 1144 KB Output is correct
9 Correct 43 ms 2412 KB Output is correct
10 Correct 25 ms 1528 KB Output is correct
11 Correct 2 ms 388 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 ms 428 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 380 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 13 ms 760 KB Output is correct
27 Correct 33 ms 1656 KB Output is correct
28 Correct 41 ms 1940 KB Output is correct
29 Correct 73 ms 1780 KB Output is correct
30 Correct 80 ms 1912 KB Output is correct
31 Correct 32 ms 1656 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 22 ms 1016 KB Output is correct
34 Correct 38 ms 1784 KB Output is correct
35 Correct 7 ms 504 KB Output is correct
36 Correct 26 ms 1272 KB Output is correct
37 Correct 32 ms 1528 KB Output is correct
38 Correct 40 ms 1916 KB Output is correct
39 Correct 14 ms 884 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 69 ms 2296 KB Output is correct
42 Correct 47 ms 2552 KB Output is correct
43 Correct 55 ms 2296 KB Output is correct
44 Correct 45 ms 2600 KB Output is correct
45 Correct 46 ms 2716 KB Output is correct
46 Correct 79 ms 2680 KB Output is correct
47 Correct 40 ms 2416 KB Output is correct
48 Correct 49 ms 2424 KB Output is correct
49 Correct 43 ms 2552 KB Output is correct
50 Correct 236 ms 2584 KB Output is correct
51 Correct 251 ms 2680 KB Output is correct
52 Correct 236 ms 2424 KB Output is correct
53 Correct 256 ms 2680 KB Output is correct
54 Correct 232 ms 2424 KB Output is correct
55 Correct 259 ms 2680 KB Output is correct
56 Correct 223 ms 2424 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 7 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 30 ms 1796 KB Output is correct
10 Correct 9 ms 888 KB Output is correct
11 Correct 20 ms 1272 KB Output is correct
12 Correct 22 ms 1144 KB Output is correct
13 Correct 27 ms 1656 KB Output is correct
14 Correct 18 ms 1272 KB Output is correct
15 Correct 6 ms 504 KB Output is correct
16 Correct 18 ms 1144 KB Output is correct
17 Correct 43 ms 2412 KB Output is correct
18 Correct 25 ms 1528 KB Output is correct
19 Correct 2 ms 388 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 2 ms 428 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 380 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 3 ms 376 KB Output is correct
34 Correct 13 ms 760 KB Output is correct
35 Correct 33 ms 1656 KB Output is correct
36 Correct 41 ms 1940 KB Output is correct
37 Correct 73 ms 1780 KB Output is correct
38 Correct 80 ms 1912 KB Output is correct
39 Correct 32 ms 1656 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 22 ms 1016 KB Output is correct
42 Correct 38 ms 1784 KB Output is correct
43 Correct 7 ms 504 KB Output is correct
44 Correct 26 ms 1272 KB Output is correct
45 Correct 32 ms 1528 KB Output is correct
46 Correct 40 ms 1916 KB Output is correct
47 Correct 14 ms 884 KB Output is correct
48 Correct 3 ms 376 KB Output is correct
49 Correct 69 ms 2296 KB Output is correct
50 Correct 47 ms 2552 KB Output is correct
51 Correct 55 ms 2296 KB Output is correct
52 Correct 45 ms 2600 KB Output is correct
53 Correct 46 ms 2716 KB Output is correct
54 Correct 79 ms 2680 KB Output is correct
55 Correct 40 ms 2416 KB Output is correct
56 Correct 49 ms 2424 KB Output is correct
57 Correct 43 ms 2552 KB Output is correct
58 Correct 236 ms 2584 KB Output is correct
59 Correct 251 ms 2680 KB Output is correct
60 Correct 236 ms 2424 KB Output is correct
61 Correct 256 ms 2680 KB Output is correct
62 Correct 232 ms 2424 KB Output is correct
63 Correct 259 ms 2680 KB Output is correct
64 Correct 223 ms 2424 KB Output is correct
65 Correct 2 ms 504 KB Output is correct
66 Correct 2 ms 376 KB Output is correct
67 Correct 242 ms 2652 KB Output is correct
68 Correct 242 ms 2552 KB Output is correct
69 Correct 211 ms 2296 KB Output is correct
70 Correct 232 ms 2680 KB Output is correct
71 Correct 229 ms 2552 KB Output is correct
72 Correct 228 ms 2528 KB Output is correct
73 Correct 219 ms 2424 KB Output is correct
74 Correct 240 ms 2552 KB Output is correct
75 Correct 227 ms 2424 KB Output is correct
76 Correct 244 ms 2652 KB Output is correct
77 Correct 69 ms 2708 KB Output is correct
78 Correct 46 ms 2424 KB Output is correct
79 Correct 54 ms 2300 KB Output is correct
80 Correct 56 ms 2420 KB Output is correct
81 Correct 54 ms 2292 KB Output is correct
82 Correct 54 ms 2524 KB Output is correct
83 Correct 45 ms 2472 KB Output is correct
84 Correct 158 ms 2672 KB Output is correct
85 Correct 258 ms 2676 KB Output is correct
86 Correct 3 ms 376 KB Output is correct
87 Correct 2 ms 376 KB Output is correct
88 Correct 259 ms 2712 KB Output is correct
89 Correct 51 ms 760 KB Output is correct
90 Correct 2 ms 376 KB Output is correct