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Submission #518762

# Submission time Handle Problem Language Result Execution time Memory
518762 2022-01-24T14:47:28 Z spike1236 Chessboard (IZhO18_chessboard) C++14
70 / 100
 627 ms 400 KB 
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define ll long long
#define ld long double
#define all(_v) _v.begin(), _v.end()
#define sz(_v) (int)_v.size()
#define pii pair <int, int>
#define pll pair <ll, ll>
#define veci vector <int>
#define vecll vector <ll>

const int dx[4] = {1, -1, 0, 0};
const int dy[4] = {0, 0, -1, 1};
const double PI = 3.1415926535897932384626433832795;
const double eps = 1e-9;
const int MOD1 = 1e9 + 7;
const int MOD2 = 998244353;

const int MAXN = 2e5 + 10;
ll n;
ll cnt[MAXN];

ll get(ll r, ll k) {
    ll nr = (r % k == 0 ? r : r - r % k);
    ll bl = nr / k;
    ll cnt = (bl + 1) / 2 * k;
    if(bl % 2 == 0) cnt += r - nr;
    return cnt;
}

void solve() {
    int k;
    cin >> n >> k;
    veci dv;
    dv.pb(1);
    for(ll i = 2; i * i <= n; ++i) {
        if(n % i == 0) {
            dv.pb(i);
            if(i * i != n) dv.pb(n / i);
        }
    }
    sort(all(dv));
    for(auto i : dv) {
        ll cnt1 = get(n, i);
        cnt[i] = cnt1 * i * (((n / i) + 1) / 2) + (n - cnt1) * i * (n / i - (((n / i) + 1) / 2));
    }
    for(int rect = 1; rect <= k; ++rect) {
        ll x1, y1, x2, y2;
        cin >> x1 >> y1 >> x2 >> y2;
        for(auto i : dv) {
            ll row_cnt[2];
            row_cnt[1] = get(x2, i) - get(x1 - 1, i);
            row_cnt[0] = x2 - x1 + 1 - row_cnt[1];
            ll col_cnt[2];
            col_cnt[1] = get(y2, i) - get(y2 - 1, i);
            col_cnt[0] = y2 - y1 + 1 - col_cnt[1];
            cnt[i] -= row_cnt[1] * col_cnt[1];
            cnt[i] -= row_cnt[0] * col_cnt[0];
            cnt[i] += row_cnt[0] * col_cnt[1];
            cnt[i] += row_cnt[1] * col_cnt[0];
        }
    }
    ll ans = 1e18;
    for(auto i : dv) ans = min(ans, min(cnt[i], n * n - cnt[i]));
    cout << ans;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int CNT_TESTS = 1;
    ///cin >> CNT_TESTS;
    for(int NUMCASE = 1; NUMCASE <= CNT_TESTS; ++NUMCASE) {
        solve();
        if(NUMCASE != CNT_TESTS) cout << '\n';
    }
    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 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 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 300 KB Output is correct
2 Correct 6 ms 204 KB Output is correct
3 Correct 14 ms 204 KB Output is correct
4 Correct 16 ms 204 KB Output is correct
5 Correct 19 ms 204 KB Output is correct
6 Correct 12 ms 328 KB Output is correct
7 Correct 3 ms 216 KB Output is correct
8 Correct 12 ms 320 KB Output is correct
9 Correct 31 ms 208 KB Output is correct
10 Correct 25 ms 204 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 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 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 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 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 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 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 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 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 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 12 ms 320 KB Output is correct
17 Correct 26 ms 300 KB Output is correct
18 Correct 44 ms 304 KB Output is correct
19 Correct 124 ms 204 KB Output is correct
20 Correct 140 ms 204 KB Output is correct
21 Correct 23 ms 320 KB Output is correct
22 Correct 1 ms 216 KB Output is correct
23 Correct 24 ms 332 KB Output is correct
24 Correct 37 ms 216 KB Output is correct
25 Correct 5 ms 216 KB Output is correct
26 Correct 20 ms 216 KB Output is correct
27 Correct 31 ms 320 KB Output is correct
28 Correct 34 ms 312 KB Output is correct
29 Correct 9 ms 216 KB Output is correct
30 Correct 2 ms 216 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 300 KB Output is correct
2 Correct 6 ms 204 KB Output is correct
3 Correct 14 ms 204 KB Output is correct
4 Correct 16 ms 204 KB Output is correct
5 Correct 19 ms 204 KB Output is correct
6 Correct 12 ms 328 KB Output is correct
7 Correct 3 ms 216 KB Output is correct
8 Correct 12 ms 320 KB Output is correct
9 Correct 31 ms 208 KB Output is correct
10 Correct 25 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 0 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 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 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 12 ms 320 KB Output is correct
27 Correct 26 ms 300 KB Output is correct
28 Correct 44 ms 304 KB Output is correct
29 Correct 124 ms 204 KB Output is correct
30 Correct 140 ms 204 KB Output is correct
31 Correct 23 ms 320 KB Output is correct
32 Correct 1 ms 216 KB Output is correct
33 Correct 24 ms 332 KB Output is correct
34 Correct 37 ms 216 KB Output is correct
35 Correct 5 ms 216 KB Output is correct
36 Correct 20 ms 216 KB Output is correct
37 Correct 31 ms 320 KB Output is correct
38 Correct 34 ms 312 KB Output is correct
39 Correct 9 ms 216 KB Output is correct
40 Correct 2 ms 216 KB Output is correct
41 Correct 115 ms 352 KB Output is correct
42 Correct 44 ms 216 KB Output is correct
43 Correct 65 ms 344 KB Output is correct
44 Correct 38 ms 216 KB Output is correct
45 Correct 36 ms 308 KB Output is correct
46 Correct 127 ms 344 KB Output is correct
47 Correct 28 ms 216 KB Output is correct
48 Correct 52 ms 324 KB Output is correct
49 Correct 39 ms 216 KB Output is correct
50 Correct 561 ms 400 KB Output is correct
51 Correct 592 ms 332 KB Output is correct
52 Correct 557 ms 388 KB Output is correct
53 Correct 592 ms 332 KB Output is correct
54 Correct 559 ms 392 KB Output is correct
55 Correct 627 ms 388 KB Output is correct
56 Correct 543 ms 392 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 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 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 22 ms 300 KB Output is correct
10 Correct 6 ms 204 KB Output is correct
11 Correct 14 ms 204 KB Output is correct
12 Correct 16 ms 204 KB Output is correct
13 Correct 19 ms 204 KB Output is correct
14 Correct 12 ms 328 KB Output is correct
15 Correct 3 ms 216 KB Output is correct
16 Correct 12 ms 320 KB Output is correct
17 Correct 31 ms 208 KB Output is correct
18 Correct 25 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 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 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 12 ms 320 KB Output is correct
35 Correct 26 ms 300 KB Output is correct
36 Correct 44 ms 304 KB Output is correct
37 Correct 124 ms 204 KB Output is correct
38 Correct 140 ms 204 KB Output is correct
39 Correct 23 ms 320 KB Output is correct
40 Correct 1 ms 216 KB Output is correct
41 Correct 24 ms 332 KB Output is correct
42 Correct 37 ms 216 KB Output is correct
43 Correct 5 ms 216 KB Output is correct
44 Correct 20 ms 216 KB Output is correct
45 Correct 31 ms 320 KB Output is correct
46 Correct 34 ms 312 KB Output is correct
47 Correct 9 ms 216 KB Output is correct
48 Correct 2 ms 216 KB Output is correct
49 Correct 115 ms 352 KB Output is correct
50 Correct 44 ms 216 KB Output is correct
51 Correct 65 ms 344 KB Output is correct
52 Correct 38 ms 216 KB Output is correct
53 Correct 36 ms 308 KB Output is correct
54 Correct 127 ms 344 KB Output is correct
55 Correct 28 ms 216 KB Output is correct
56 Correct 52 ms 324 KB Output is correct
57 Correct 39 ms 216 KB Output is correct
58 Correct 561 ms 400 KB Output is correct
59 Correct 592 ms 332 KB Output is correct
60 Correct 557 ms 388 KB Output is correct
61 Correct 592 ms 332 KB Output is correct
62 Correct 559 ms 392 KB Output is correct
63 Correct 627 ms 388 KB Output is correct
64 Correct 543 ms 392 KB Output is correct
65 Correct 1 ms 216 KB Output is correct
66 Incorrect 0 ms 212 KB Output isn't correct
67 Halted 0 ms 0 KB -