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Submission #495154

# Submission time Handle Problem Language Result Execution time Memory
495154 2021-12-18T05:51:38 Z Nalrimet Chessboard (IZhO18_chessboard) C++17
70 / 100
 253 ms 4244 KB 
#include<bits/stdc++.h>
using namespace std;

#define F first
#define S second
#define pb push_back
#define ll long long

const int N = 1e5 + 5;
const ll inf = 1e18;


long long n, k, x[N], y[N], cnt1, cnt2, m1, m2, ans = inf, b1, b2, s;
vector<long long> v;

int main() {

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> k;

    for(ll i = 1; i * i <= n; ++i){
        if(n % i == 0){
            v.pb(i);
            if(i != n / i) v.pb(n / i);
        }
    }

    for(ll i = 1, x1, y1; i <= k; ++i){
        cin >> x[i] >> y[i];

        cin >> x1 >> y1;
    }

    for(auto to : v){
        if(to == n) continue;
        cnt1 = 0;
        cnt2 = 0;
        for(ll i = 1; i <= k; ++i){
            b1 = (x[i] + to - 1) / to;
            b2 = (y[i] + to - 1) / to;
            if(b1 % 2) {
                if(b2 % 2) cnt1++;
                else cnt2++;
            }
            else {
                if(b2 % 2) cnt2++;
                else cnt1++;
            }
        }
//        cout << to << ' ' << cnt1 << ' ' << cnt2 << '\n';
        s = n / to;
//        cout << s << '\n';
        m1 = (s + 1) / 2 * ((s + 1) / 2) + (s / 2) * (s / 2);
        m2 = s * s - m1;
//        cout << m1 << ' ' << m2 << '\n';
        m1 *= to * to;
        m2 *= to * to;
//        cout << m1 << ' ' << m2 << '\n';
        ans = min(ans, min(m1 - cnt1 + cnt2, m2 - cnt2 + cnt1));
//        cout << m1 - cnt1 + cnt2 << '\n' << m2 - cnt2 + cnt1 << '\n';
    }

    cout << ans;

    return 0;

}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 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

# Verdict Execution time Memory Grader output
1 Correct 20 ms 1296 KB Output is correct
2 Correct 5 ms 588 KB Output is correct
3 Correct 13 ms 984 KB Output is correct
4 Correct 13 ms 1100 KB Output is correct
5 Correct 16 ms 1252 KB Output is correct
6 Correct 13 ms 972 KB Output is correct
7 Correct 4 ms 460 KB Output is correct
8 Correct 11 ms 924 KB Output is correct
9 Correct 31 ms 1724 KB Output is correct
10 Correct 23 ms 1100 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 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 0 ms 332 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 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

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 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 0 ms 332 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 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 7 ms 716 KB Output is correct
17 Correct 24 ms 1612 KB Output is correct
18 Correct 26 ms 1788 KB Output is correct
19 Correct 59 ms 1700 KB Output is correct
20 Correct 65 ms 1740 KB Output is correct
21 Correct 21 ms 1484 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 16 ms 896 KB Output is correct
24 Correct 27 ms 1640 KB Output is correct
25 Correct 5 ms 332 KB Output is correct
26 Correct 17 ms 1100 KB Output is correct
27 Correct 26 ms 1292 KB Output is correct
28 Correct 27 ms 1796 KB Output is correct
29 Correct 8 ms 844 KB Output is correct
30 Correct 1 ms 332 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 1296 KB Output is correct
2 Correct 5 ms 588 KB Output is correct
3 Correct 13 ms 984 KB Output is correct
4 Correct 13 ms 1100 KB Output is correct
5 Correct 16 ms 1252 KB Output is correct
6 Correct 13 ms 972 KB Output is correct
7 Correct 4 ms 460 KB Output is correct
8 Correct 11 ms 924 KB Output is correct
9 Correct 31 ms 1724 KB Output is correct
10 Correct 23 ms 1100 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 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 0 ms 332 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 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 7 ms 716 KB Output is correct
27 Correct 24 ms 1612 KB Output is correct
28 Correct 26 ms 1788 KB Output is correct
29 Correct 59 ms 1700 KB Output is correct
30 Correct 65 ms 1740 KB Output is correct
31 Correct 21 ms 1484 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 16 ms 896 KB Output is correct
34 Correct 27 ms 1640 KB Output is correct
35 Correct 5 ms 332 KB Output is correct
36 Correct 17 ms 1100 KB Output is correct
37 Correct 26 ms 1292 KB Output is correct
38 Correct 27 ms 1796 KB Output is correct
39 Correct 8 ms 844 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 58 ms 3576 KB Output is correct
42 Correct 35 ms 4000 KB Output is correct
43 Correct 41 ms 3580 KB Output is correct
44 Correct 31 ms 3864 KB Output is correct
45 Correct 32 ms 4164 KB Output is correct
46 Correct 69 ms 3984 KB Output is correct
47 Correct 27 ms 3692 KB Output is correct
48 Correct 36 ms 3652 KB Output is correct
49 Correct 28 ms 3524 KB Output is correct
50 Correct 237 ms 3892 KB Output is correct
51 Correct 251 ms 4132 KB Output is correct
52 Correct 229 ms 3780 KB Output is correct
53 Correct 253 ms 4108 KB Output is correct
54 Correct 244 ms 3824 KB Output is correct
55 Correct 251 ms 4244 KB Output is correct
56 Correct 244 ms 3716 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 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 20 ms 1296 KB Output is correct
10 Correct 5 ms 588 KB Output is correct
11 Correct 13 ms 984 KB Output is correct
12 Correct 13 ms 1100 KB Output is correct
13 Correct 16 ms 1252 KB Output is correct
14 Correct 13 ms 972 KB Output is correct
15 Correct 4 ms 460 KB Output is correct
16 Correct 11 ms 924 KB Output is correct
17 Correct 31 ms 1724 KB Output is correct
18 Correct 23 ms 1100 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 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 0 ms 332 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 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 7 ms 716 KB Output is correct
35 Correct 24 ms 1612 KB Output is correct
36 Correct 26 ms 1788 KB Output is correct
37 Correct 59 ms 1700 KB Output is correct
38 Correct 65 ms 1740 KB Output is correct
39 Correct 21 ms 1484 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 16 ms 896 KB Output is correct
42 Correct 27 ms 1640 KB Output is correct
43 Correct 5 ms 332 KB Output is correct
44 Correct 17 ms 1100 KB Output is correct
45 Correct 26 ms 1292 KB Output is correct
46 Correct 27 ms 1796 KB Output is correct
47 Correct 8 ms 844 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 58 ms 3576 KB Output is correct
50 Correct 35 ms 4000 KB Output is correct
51 Correct 41 ms 3580 KB Output is correct
52 Correct 31 ms 3864 KB Output is correct
53 Correct 32 ms 4164 KB Output is correct
54 Correct 69 ms 3984 KB Output is correct
55 Correct 27 ms 3692 KB Output is correct
56 Correct 36 ms 3652 KB Output is correct
57 Correct 28 ms 3524 KB Output is correct
58 Correct 237 ms 3892 KB Output is correct
59 Correct 251 ms 4132 KB Output is correct
60 Correct 229 ms 3780 KB Output is correct
61 Correct 253 ms 4108 KB Output is correct
62 Correct 244 ms 3824 KB Output is correct
63 Correct 251 ms 4244 KB Output is correct
64 Correct 244 ms 3716 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Incorrect 0 ms 316 KB Output isn't correct
67 Halted 0 ms 0 KB -