oj.uz

Submission #155149

# Submission time Handle Problem Language Result Execution time Memory
155149 2019-09-26T17:10:30 Z srvlt Chessboard (IZhO18_chessboard) C++14
47 / 100
 2000 ms 7520 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);
    }
    for (int i = 1; i < n; i++) {
        if (n % i == 0) {
            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 380 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 4964 KB Output is correct
2 Correct 13 ms 1908 KB Output is correct
3 Correct 32 ms 3996 KB Output is correct
4 Correct 30 ms 3316 KB Output is correct
5 Correct 47 ms 4300 KB Output is correct
6 Correct 27 ms 3496 KB Output is correct
7 Correct 8 ms 1196 KB Output is correct
8 Correct 28 ms 3440 KB Output is correct
9 Correct 63 ms 6212 KB Output is correct
10 Correct 36 ms 3828 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 504 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 436 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 504 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 504 KB Output is correct
5 Correct 3 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 436 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 26 ms 1904 KB Output is correct
17 Correct 48 ms 5864 KB Output is correct
18 Correct 85 ms 5864 KB Output is correct
19 Correct 396 ms 5900 KB Output is correct
20 Correct 442 ms 5940 KB Output is correct
21 Correct 46 ms 5860 KB Output is correct
22 Correct 4 ms 376 KB Output is correct
23 Correct 64 ms 3180 KB Output is correct
24 Correct 79 ms 5868 KB Output is correct
25 Correct 15 ms 1144 KB Output is correct
26 Correct 50 ms 3284 KB Output is correct
27 Correct 83 ms 5736 KB Output is correct
28 Correct 84 ms 5868 KB Output is correct
29 Correct 21 ms 3028 KB Output is correct
30 Correct 4 ms 632 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 4964 KB Output is correct
2 Correct 13 ms 1908 KB Output is correct
3 Correct 32 ms 3996 KB Output is correct
4 Correct 30 ms 3316 KB Output is correct
5 Correct 47 ms 4300 KB Output is correct
6 Correct 27 ms 3496 KB Output is correct
7 Correct 8 ms 1196 KB Output is correct
8 Correct 28 ms 3440 KB Output is correct
9 Correct 63 ms 6212 KB Output is correct
10 Correct 36 ms 3828 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 504 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 2 ms 380 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 3 ms 436 KB Output is correct
19 Correct 3 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 2 ms 376 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 3 ms 504 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 26 ms 1904 KB Output is correct
27 Correct 48 ms 5864 KB Output is correct
28 Correct 85 ms 5864 KB Output is correct
29 Correct 396 ms 5900 KB Output is correct
30 Correct 442 ms 5940 KB Output is correct
31 Correct 46 ms 5860 KB Output is correct
32 Correct 4 ms 376 KB Output is correct
33 Correct 64 ms 3180 KB Output is correct
34 Correct 79 ms 5868 KB Output is correct
35 Correct 15 ms 1144 KB Output is correct
36 Correct 50 ms 3284 KB Output is correct
37 Correct 83 ms 5736 KB Output is correct
38 Correct 84 ms 5868 KB Output is correct
39 Correct 21 ms 3028 KB Output is correct
40 Correct 4 ms 632 KB Output is correct
41 Correct 400 ms 6624 KB Output is correct
42 Correct 103 ms 7260 KB Output is correct
43 Correct 218 ms 6600 KB Output is correct
44 Correct 111 ms 7140 KB Output is correct
45 Correct 75 ms 7520 KB Output is correct
46 Correct 458 ms 7140 KB Output is correct
47 Correct 61 ms 6752 KB Output is correct
48 Correct 160 ms 6880 KB Output is correct
49 Correct 92 ms 6684 KB Output is correct
50 Execution timed out 2029 ms 6752 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 380 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 44 ms 4964 KB Output is correct
10 Correct 13 ms 1908 KB Output is correct
11 Correct 32 ms 3996 KB Output is correct
12 Correct 30 ms 3316 KB Output is correct
13 Correct 47 ms 4300 KB Output is correct
14 Correct 27 ms 3496 KB Output is correct
15 Correct 8 ms 1196 KB Output is correct
16 Correct 28 ms 3440 KB Output is correct
17 Correct 63 ms 6212 KB Output is correct
18 Correct 36 ms 3828 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 504 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 2 ms 380 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 3 ms 436 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 3 ms 504 KB Output is correct
33 Correct 3 ms 376 KB Output is correct
34 Correct 26 ms 1904 KB Output is correct
35 Correct 48 ms 5864 KB Output is correct
36 Correct 85 ms 5864 KB Output is correct
37 Correct 396 ms 5900 KB Output is correct
38 Correct 442 ms 5940 KB Output is correct
39 Correct 46 ms 5860 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 64 ms 3180 KB Output is correct
42 Correct 79 ms 5868 KB Output is correct
43 Correct 15 ms 1144 KB Output is correct
44 Correct 50 ms 3284 KB Output is correct
45 Correct 83 ms 5736 KB Output is correct
46 Correct 84 ms 5868 KB Output is correct
47 Correct 21 ms 3028 KB Output is correct
48 Correct 4 ms 632 KB Output is correct
49 Correct 400 ms 6624 KB Output is correct
50 Correct 103 ms 7260 KB Output is correct
51 Correct 218 ms 6600 KB Output is correct
52 Correct 111 ms 7140 KB Output is correct
53 Correct 75 ms 7520 KB Output is correct
54 Correct 458 ms 7140 KB Output is correct
55 Correct 61 ms 6752 KB Output is correct
56 Correct 160 ms 6880 KB Output is correct
57 Correct 92 ms 6684 KB Output is correct
58 Execution timed out 2029 ms 6752 KB Time limit exceeded
59 Halted 0 ms 0 KB -