oj.uz

Submission #155156

# Submission time Handle Problem Language Result Execution time Memory
155156 2019-09-26T17:18:44 Z srvlt Chessboard (IZhO18_chessboard) C++14
47 / 100
 2000 ms 5092 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse2,avx")
#include <bits/stdc++.h>
#define ll int
#define db long double
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define fi first
#define se second
#define mp make_pair
#define endl "\n"
#define int long long
using namespace std;

void dout() {
    cerr << endl;
}

template <typename Head, typename... Tail>
void dout(Head H, Tail... T) {
    cerr << H << ' ';
    dout(T...);
}

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int inf = 1e18, N = 1e5 + 3;
struct rect {
    int x = 0, y = 0, x2 = 0, y2 = 0;
};
int n, k, ans = inf, p[2][N], A, Z, S, W, B, L;
vector <rect> v;

int color(int x, int y) {
    int z = (x - 1) / A;
    int w = (y - 1) / A;
    return ((z + w + Z) & 1);
}

int num(int x) {
    int z = (x - 1) / A;
    return (z & 1);
}

int getL() {
    int x = n / A;
    int a = ((x + 1) / 2) * A * A;
    int b = (x / 2) * A * A;
    int res = ((x + 1) / 2) * a + (x / 2) * b;
    if (Z == 0) {
        return res;
    }   else {
        return n * n - res;
    }
}

int getval(int x, int a, int b) {
    if (x < 1) {
        return 0;
    }
    int res = 0;
    int last = ((x - 1) / A) * A + 1;
    if (num(last) == 0) {
        res += (x - last + 1) * a;
    }   else {
        res += (x - last + 1) * b;
    }
    int q = (last - 1) / A;
    res += ((q + 1) / 2) * A * a;
    res += (q / 2) * A * b;
    return res;
}

int getans() {
    for (int i = 1; i <= n; i++) {
        p[0][i] = p[0][i - 1];
        p[1][i] = p[1][i - 1];
        if (color(i, 1)) {
            p[0][i]++;
        }   else {
            p[1][i]++;
        }
    }
    int res = 0;
    for (auto i : v) {
        int x = i.x, y = i.y, x2 = i.x2, y2 = i.y2;
        int v1 = p[0][x2] - p[0][x - 1];
        int v2 = p[1][x2] - p[1][x - 1];
        res += getval(y2, v1, v2) - getval(y - 1, v1, v2);
    }
    return res;
}

void solve(int tc) {
    cin >> n >> k;
    for (int i = 0; i < k; i++) {
        rect tmp;
        cin >> tmp.x >> tmp.y >> tmp.x2 >> tmp.y2;
        S += (tmp.x2 - tmp.x + 1) * (tmp.y2 - tmp.y + 1);
        v.pb(tmp);
    }
    vector <int> factors = {};
    for (int i = 1; i < n; i++) {
        if (n % i == 0) {
            factors.pb(i);
        }
    }
    assert(factors.size() <= 128);
    for (auto i : factors) {
        A = i;
        for (int j = 0; j < 2; j++) {
            Z = j;
            L = getL();
            W = getans();
            B = L - (S - W);
            ans = min(ans, W + B);
        }
    }
    cout << ans;
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
    int tc = 1;
//    cin >> tc;
    for (int i = 0; i < tc; i++) {
        solve(i);
//        cleanup();
    }
}

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 2 ms 276 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 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 43 ms 3432 KB Output is correct
2 Correct 13 ms 1540 KB Output is correct
3 Correct 30 ms 2976 KB Output is correct
4 Correct 29 ms 2540 KB Output is correct
5 Correct 42 ms 3044 KB Output is correct
6 Correct 26 ms 2608 KB Output is correct
7 Correct 7 ms 1016 KB Output is correct
8 Correct 26 ms 2548 KB Output is correct
9 Correct 60 ms 4624 KB Output is correct
10 Correct 35 ms 2664 KB Output is correct

Subtask #3
15.0 / 15.0

# 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 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 ms 504 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 8 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 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 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 3 ms 376 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 ms 504 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 8 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 25 ms 1524 KB Output is correct
17 Correct 47 ms 4604 KB Output is correct
18 Correct 84 ms 4560 KB Output is correct
19 Correct 397 ms 4584 KB Output is correct
20 Correct 441 ms 4588 KB Output is correct
21 Correct 45 ms 4584 KB Output is correct
22 Correct 4 ms 376 KB Output is correct
23 Correct 63 ms 2540 KB Output is correct
24 Correct 77 ms 4592 KB Output is correct
25 Correct 15 ms 1016 KB Output is correct
26 Correct 49 ms 2544 KB Output is correct
27 Correct 84 ms 4552 KB Output is correct
28 Correct 83 ms 4724 KB Output is correct
29 Correct 20 ms 2544 KB Output is correct
30 Correct 5 ms 632 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 3432 KB Output is correct
2 Correct 13 ms 1540 KB Output is correct
3 Correct 30 ms 2976 KB Output is correct
4 Correct 29 ms 2540 KB Output is correct
5 Correct 42 ms 3044 KB Output is correct
6 Correct 26 ms 2608 KB Output is correct
7 Correct 7 ms 1016 KB Output is correct
8 Correct 26 ms 2548 KB Output is correct
9 Correct 60 ms 4624 KB Output is correct
10 Correct 35 ms 2664 KB Output is correct
11 Correct 2 ms 376 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 3 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 3 ms 504 KB Output is correct
18 Correct 3 ms 376 KB Output is correct
19 Correct 8 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 3 ms 376 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 25 ms 1524 KB Output is correct
27 Correct 47 ms 4604 KB Output is correct
28 Correct 84 ms 4560 KB Output is correct
29 Correct 397 ms 4584 KB Output is correct
30 Correct 441 ms 4588 KB Output is correct
31 Correct 45 ms 4584 KB Output is correct
32 Correct 4 ms 376 KB Output is correct
33 Correct 63 ms 2540 KB Output is correct
34 Correct 77 ms 4592 KB Output is correct
35 Correct 15 ms 1016 KB Output is correct
36 Correct 49 ms 2544 KB Output is correct
37 Correct 84 ms 4552 KB Output is correct
38 Correct 83 ms 4724 KB Output is correct
39 Correct 20 ms 2544 KB Output is correct
40 Correct 5 ms 632 KB Output is correct
41 Correct 402 ms 4724 KB Output is correct
42 Correct 99 ms 4960 KB Output is correct
43 Correct 224 ms 4700 KB Output is correct
44 Correct 99 ms 4960 KB Output is correct
45 Correct 69 ms 5092 KB Output is correct
46 Correct 438 ms 4960 KB Output is correct
47 Correct 63 ms 4676 KB Output is correct
48 Correct 157 ms 4804 KB Output is correct
49 Correct 94 ms 4704 KB Output is correct
50 Execution timed out 2051 ms 4584 KB Time limit exceeded
51 Halted 0 ms 0 KB -

Subtask #6
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 2 ms 276 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 43 ms 3432 KB Output is correct
10 Correct 13 ms 1540 KB Output is correct
11 Correct 30 ms 2976 KB Output is correct
12 Correct 29 ms 2540 KB Output is correct
13 Correct 42 ms 3044 KB Output is correct
14 Correct 26 ms 2608 KB Output is correct
15 Correct 7 ms 1016 KB Output is correct
16 Correct 26 ms 2548 KB Output is correct
17 Correct 60 ms 4624 KB Output is correct
18 Correct 35 ms 2664 KB Output is correct
19 Correct 2 ms 376 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 3 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 3 ms 504 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 8 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 3 ms 376 KB Output is correct
30 Correct 3 ms 376 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 3 ms 376 KB Output is correct
34 Correct 25 ms 1524 KB Output is correct
35 Correct 47 ms 4604 KB Output is correct
36 Correct 84 ms 4560 KB Output is correct
37 Correct 397 ms 4584 KB Output is correct
38 Correct 441 ms 4588 KB Output is correct
39 Correct 45 ms 4584 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 63 ms 2540 KB Output is correct
42 Correct 77 ms 4592 KB Output is correct
43 Correct 15 ms 1016 KB Output is correct
44 Correct 49 ms 2544 KB Output is correct
45 Correct 84 ms 4552 KB Output is correct
46 Correct 83 ms 4724 KB Output is correct
47 Correct 20 ms 2544 KB Output is correct
48 Correct 5 ms 632 KB Output is correct
49 Correct 402 ms 4724 KB Output is correct
50 Correct 99 ms 4960 KB Output is correct
51 Correct 224 ms 4700 KB Output is correct
52 Correct 99 ms 4960 KB Output is correct
53 Correct 69 ms 5092 KB Output is correct
54 Correct 438 ms 4960 KB Output is correct
55 Correct 63 ms 4676 KB Output is correct
56 Correct 157 ms 4804 KB Output is correct
57 Correct 94 ms 4704 KB Output is correct
58 Execution timed out 2051 ms 4584 KB Time limit exceeded
59 Halted 0 ms 0 KB -