답안 #495221

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
495221	2021-12-18T07:02:38 Z	pragmatist	Chessboard (IZhO18_chessboard)	C++14	47 / 100	173 ms	1596 KB

chessboard

#include <bits/stdc++.h>                            
 
#define pb push_back
#define sz(v) (int)v.size()
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define x first
#define y second
#define int long long
#define nl "\n"
 
using namespace std;

typedef long long ll;
typedef pair<long long, long long> pll;
typedef pair <ll, ll> pii;

const int N = (int)3e5 + 7;
const int M = (int)7e6 + 7;
const ll MOD = (ll)1e9 + 7;                    
const int inf = (int)1e9 + 7;
const ll INF = (ll)3e18 + 7;

pii dir[] = {{-1, -1}, {1, 1}, {-1, 1}, {1, -1}};

int n, k;
bool c[1001][1001];

int f(int x, bool cur) {
    int ans = 0;
	for(int i = 1; i <= n; i += x) {
	    bool ok = cur;
	    for(int j = 1; j <= n; j += x) {
	    	int k = j + x - 1, t = i + x - 1;
	    	for(int l = i; l <= t; ++l) {
	    		for(int r = j; r <= k; ++r) {
	    			if(ok) ans += (c[l][r] == 0);
	    			else ans += (c[l][r] == 1);
	    		}
	    	}
	    	ok ^= 1;
	    }
		cur ^= 1;
	}
	return ans;
}

void solve() {          	             
	cin >> n >> k;
	int a = 0, b = 0;
	for(int i = 1; i <= n; ++i) {
		if(i & 1) a += n / 2, b += (n + 1) / 2;
		else a  += (n + 1) / 2, b += n / 2;
	}
	while(k--) {
		int x1, y1, x2, y2;
		cin >> x1 >> y1 >> x2 >> y2;
		if(x1 & 1) {
			if(y1 & 1) a++, b--;
			else a--, b++;
		} else {
			if(y1 & 1) a--, b++;
			else a++, b--;
		}
		if(n > 1000) continue;		
		for(int i = x1; i <= x2; ++i) {
			for(int j = y1; j <= y2; ++j) {
				c[i][j] = 1;
			}
		}
	}             
	int ans = min(a, b);
	for(int i = 2; i < n; ++i) {
		if(n % i == 0) {
			ans = min(ans, f(i, 0));
			ans = min(ans, f(i, 1));			
		}
	}
	cout << ans << nl;
}

signed main() {                   
	ios_base::sync_with_stdio(NULL);
    cin.tie(0);
    cout.tie(0);
   	int test = 1;
	//cin >> test;
	for(int i = 1; i <= test; ++i) {
        //cout << "Case " << i << ": ";
        solve();
    }
    return 0;
}

Subtask #1
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	204 KB	Output is correct
2	Correct	5 ms	204 KB	Output is correct
3	Correct	11 ms	204 KB	Output is correct
4	Correct	13 ms	204 KB	Output is correct
5	Correct	17 ms	316 KB	Output is correct
6	Correct	11 ms	320 KB	Output is correct
7	Correct	2 ms	204 KB	Output is correct
8	Correct	11 ms	204 KB	Output is correct
9	Correct	25 ms	316 KB	Output is correct
10	Correct	16 ms	320 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct

Subtask #4
16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	11 ms	1228 KB	Output is correct
17	Correct	23 ms	1228 KB	Output is correct
18	Correct	28 ms	1228 KB	Output is correct
19	Correct	65 ms	1228 KB	Output is correct
20	Correct	70 ms	1236 KB	Output is correct
21	Correct	23 ms	1228 KB	Output is correct
22	Correct	26 ms	1124 KB	Output is correct
23	Correct	21 ms	1228 KB	Output is correct
24	Correct	24 ms	1228 KB	Output is correct
25	Correct	11 ms	1264 KB	Output is correct
26	Correct	17 ms	1228 KB	Output is correct
27	Correct	25 ms	1228 KB	Output is correct
28	Correct	28 ms	1228 KB	Output is correct
29	Correct	11 ms	1228 KB	Output is correct
30	Correct	7 ms	1228 KB	Output is correct

Subtask #5
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	204 KB	Output is correct
2	Correct	5 ms	204 KB	Output is correct
3	Correct	11 ms	204 KB	Output is correct
4	Correct	13 ms	204 KB	Output is correct
5	Correct	17 ms	316 KB	Output is correct
6	Correct	11 ms	320 KB	Output is correct
7	Correct	2 ms	204 KB	Output is correct
8	Correct	11 ms	204 KB	Output is correct
9	Correct	25 ms	316 KB	Output is correct
10	Correct	16 ms	320 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	0 ms	332 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	11 ms	1228 KB	Output is correct
27	Correct	23 ms	1228 KB	Output is correct
28	Correct	28 ms	1228 KB	Output is correct
29	Correct	65 ms	1228 KB	Output is correct
30	Correct	70 ms	1236 KB	Output is correct
31	Correct	23 ms	1228 KB	Output is correct
32	Correct	26 ms	1124 KB	Output is correct
33	Correct	21 ms	1228 KB	Output is correct
34	Correct	24 ms	1228 KB	Output is correct
35	Correct	11 ms	1264 KB	Output is correct
36	Correct	17 ms	1228 KB	Output is correct
37	Correct	25 ms	1228 KB	Output is correct
38	Correct	28 ms	1228 KB	Output is correct
39	Correct	11 ms	1228 KB	Output is correct
40	Correct	7 ms	1228 KB	Output is correct
41	Runtime error	173 ms	1596 KB	Execution killed with signal 11
42	Halted	0 ms	0 KB	-

Subtask #6
0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	0 ms	204 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	0 ms	204 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	0 ms	204 KB	Output is correct
8	Correct	0 ms	204 KB	Output is correct
9	Correct	19 ms	204 KB	Output is correct
10	Correct	5 ms	204 KB	Output is correct
11	Correct	11 ms	204 KB	Output is correct
12	Correct	13 ms	204 KB	Output is correct
13	Correct	17 ms	316 KB	Output is correct
14	Correct	11 ms	320 KB	Output is correct
15	Correct	2 ms	204 KB	Output is correct
16	Correct	11 ms	204 KB	Output is correct
17	Correct	25 ms	316 KB	Output is correct
18	Correct	16 ms	320 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	332 KB	Output is correct
22	Correct	1 ms	332 KB	Output is correct
23	Correct	1 ms	332 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	0 ms	332 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct
30	Correct	1 ms	332 KB	Output is correct
31	Correct	1 ms	332 KB	Output is correct
32	Correct	1 ms	332 KB	Output is correct
33	Correct	1 ms	332 KB	Output is correct
34	Correct	11 ms	1228 KB	Output is correct
35	Correct	23 ms	1228 KB	Output is correct
36	Correct	28 ms	1228 KB	Output is correct
37	Correct	65 ms	1228 KB	Output is correct
38	Correct	70 ms	1236 KB	Output is correct
39	Correct	23 ms	1228 KB	Output is correct
40	Correct	26 ms	1124 KB	Output is correct
41	Correct	21 ms	1228 KB	Output is correct
42	Correct	24 ms	1228 KB	Output is correct
43	Correct	11 ms	1264 KB	Output is correct
44	Correct	17 ms	1228 KB	Output is correct
45	Correct	25 ms	1228 KB	Output is correct
46	Correct	28 ms	1228 KB	Output is correct
47	Correct	11 ms	1228 KB	Output is correct
48	Correct	7 ms	1228 KB	Output is correct
49	Runtime error	173 ms	1596 KB	Execution killed with signal 11
50	Halted	0 ms	0 KB	-

답안 #495221

Compilation message

Subtask #1 8.0 / 8.0

Subtask #2 8.0 / 8.0

Subtask #3 15.0 / 15.0

Subtask #4 16.0 / 16.0

Subtask #5 0 / 23.0

Subtask #6 0 / 30.0

Subtask #1
8.0 / 8.0

Subtask #2
8.0 / 8.0

Subtask #3
15.0 / 15.0

Subtask #4
16.0 / 16.0

Subtask #5
0 / 23.0

Subtask #6
0 / 30.0