oj.uz

Submission #335330

# Submission time Handle Problem Language Result Execution time Memory
335330 2020-12-12T00:42:41 Z limabeans Chessboard (IZhO18_chessboard) C++17
70 / 100
 277 ms 4460 KB 
#include <bits/stdc++.h>
using namespace std;

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;

const ll inf = 1e18;



ll n,k;
vector<pair<ll,ll>> a;



ll solve(ll x) {
    map<ll,ll> dp;
    for (auto p: a) {
	dp[(p.first/x + p.second/x)%2]++;
    }
    ll res = inf;
    ll cells = (n/x)*(n/x);
    ll area = x*x;
    //even black
    {
	ll sq = (cells/2 + (n/x)%2);
	ll cur = (sq*area - dp[0]) + dp[1];
	res = min(res, cur);
    }
    //odd black
    {
	ll sq = cells/2;
	ll cur = (sq*area - dp[1]) + dp[0];
	res = min(res, cur);
    }
    return res;
}

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

    cin>>n>>k;
    a.resize(k);
    for (int i=0; i<k; i++) {
	cin>>a[i].first>>a[i].second;
	cin>>a[i].first>>a[i].second;
	--a[i].first; --a[i].second;
    }

    ll res = inf;

    for (ll i=1; i<n; i++) {
	if (n%i==0) {
	    ll cur=solve(i);
	    //cout<<i<<": "<<cur<<endl;
	    res = min(res, cur);
	}
    }

    cout<<res<<endl;     
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 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 2816 KB Output is correct
2 Correct 9 ms 1004 KB Output is correct
3 Correct 18 ms 1900 KB Output is correct
4 Correct 19 ms 1900 KB Output is correct
5 Correct 25 ms 2412 KB Output is correct
6 Correct 16 ms 1644 KB Output is correct
7 Correct 4 ms 620 KB Output is correct
8 Correct 16 ms 1644 KB Output is correct
9 Correct 41 ms 3948 KB Output is correct
10 Correct 23 ms 2284 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 384 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 36 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 35 ms 364 KB Output is correct
12 Correct 34 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 384 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 36 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 35 ms 364 KB Output is correct
12 Correct 34 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 11 ms 1280 KB Output is correct
17 Correct 31 ms 3052 KB Output is correct
18 Correct 39 ms 3436 KB Output is correct
19 Correct 72 ms 3180 KB Output is correct
20 Correct 92 ms 3436 KB Output is correct
21 Correct 30 ms 2924 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 20 ms 1644 KB Output is correct
24 Correct 36 ms 3180 KB Output is correct
25 Correct 5 ms 620 KB Output is correct
26 Correct 23 ms 2196 KB Output is correct
27 Correct 30 ms 2540 KB Output is correct
28 Correct 38 ms 3308 KB Output is correct
29 Correct 12 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 2816 KB Output is correct
2 Correct 9 ms 1004 KB Output is correct
3 Correct 18 ms 1900 KB Output is correct
4 Correct 19 ms 1900 KB Output is correct
5 Correct 25 ms 2412 KB Output is correct
6 Correct 16 ms 1644 KB Output is correct
7 Correct 4 ms 620 KB Output is correct
8 Correct 16 ms 1644 KB Output is correct
9 Correct 41 ms 3948 KB Output is correct
10 Correct 23 ms 2284 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 384 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 36 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 35 ms 364 KB Output is correct
22 Correct 34 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 11 ms 1280 KB Output is correct
27 Correct 31 ms 3052 KB Output is correct
28 Correct 39 ms 3436 KB Output is correct
29 Correct 72 ms 3180 KB Output is correct
30 Correct 92 ms 3436 KB Output is correct
31 Correct 30 ms 2924 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 20 ms 1644 KB Output is correct
34 Correct 36 ms 3180 KB Output is correct
35 Correct 5 ms 620 KB Output is correct
36 Correct 23 ms 2196 KB Output is correct
37 Correct 30 ms 2540 KB Output is correct
38 Correct 38 ms 3308 KB Output is correct
39 Correct 12 ms 1388 KB Output is correct
40 Correct 2 ms 364 KB Output is correct
41 Correct 71 ms 3692 KB Output is correct
42 Correct 46 ms 4076 KB Output is correct
43 Correct 54 ms 3564 KB Output is correct
44 Correct 45 ms 3948 KB Output is correct
45 Correct 44 ms 4204 KB Output is correct
46 Correct 79 ms 3948 KB Output is correct
47 Correct 38 ms 3692 KB Output is correct
48 Correct 49 ms 3820 KB Output is correct
49 Correct 43 ms 3708 KB Output is correct
50 Correct 252 ms 4076 KB Output is correct
51 Correct 277 ms 4220 KB Output is correct
52 Correct 249 ms 3948 KB Output is correct
53 Correct 270 ms 4204 KB Output is correct
54 Correct 251 ms 3948 KB Output is correct
55 Correct 277 ms 4460 KB Output is correct
56 Correct 242 ms 3692 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 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 2816 KB Output is correct
10 Correct 9 ms 1004 KB Output is correct
11 Correct 18 ms 1900 KB Output is correct
12 Correct 19 ms 1900 KB Output is correct
13 Correct 25 ms 2412 KB Output is correct
14 Correct 16 ms 1644 KB Output is correct
15 Correct 4 ms 620 KB Output is correct
16 Correct 16 ms 1644 KB Output is correct
17 Correct 41 ms 3948 KB Output is correct
18 Correct 23 ms 2284 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 384 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 36 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 35 ms 364 KB Output is correct
30 Correct 34 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 11 ms 1280 KB Output is correct
35 Correct 31 ms 3052 KB Output is correct
36 Correct 39 ms 3436 KB Output is correct
37 Correct 72 ms 3180 KB Output is correct
38 Correct 92 ms 3436 KB Output is correct
39 Correct 30 ms 2924 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 20 ms 1644 KB Output is correct
42 Correct 36 ms 3180 KB Output is correct
43 Correct 5 ms 620 KB Output is correct
44 Correct 23 ms 2196 KB Output is correct
45 Correct 30 ms 2540 KB Output is correct
46 Correct 38 ms 3308 KB Output is correct
47 Correct 12 ms 1388 KB Output is correct
48 Correct 2 ms 364 KB Output is correct
49 Correct 71 ms 3692 KB Output is correct
50 Correct 46 ms 4076 KB Output is correct
51 Correct 54 ms 3564 KB Output is correct
52 Correct 45 ms 3948 KB Output is correct
53 Correct 44 ms 4204 KB Output is correct
54 Correct 79 ms 3948 KB Output is correct
55 Correct 38 ms 3692 KB Output is correct
56 Correct 49 ms 3820 KB Output is correct
57 Correct 43 ms 3708 KB Output is correct
58 Correct 252 ms 4076 KB Output is correct
59 Correct 277 ms 4220 KB Output is correct
60 Correct 249 ms 3948 KB Output is correct
61 Correct 270 ms 4204 KB Output is correct
62 Correct 251 ms 3948 KB Output is correct
63 Correct 277 ms 4460 KB Output is correct
64 Correct 242 ms 3692 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Incorrect 1 ms 364 KB Output isn't correct
67 Halted 0 ms 0 KB -