oj.uz

Submission #155164

# Submission time Handle Problem Language Result Execution time Memory
155164 2019-09-26T18:07:00 Z srvlt Chessboard (IZhO18_chessboard) C++14
47 / 100
 2000 ms 2680 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse2,avx")
#include <bits/stdc++.h>
#define ll long long
#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 N = 1e5 + 3;
const ll inf = 1e18;

int k, p[2][N], rx[N], ry[N], rx2[N], ry2[N];
ll n, ans = inf, A, Z, S, W, L, sq_A;

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);
}

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

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

ll 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]++;
        }
    }
    ll res = 0;
    for (int i = 0; i < k; i++) {
        int v1 = p[0][rx2[i]] - p[0][rx[i] - 1];
        int v2 = p[1][rx2[i]] - p[1][rx[i] - 1];
        res += getval(ry2[i], v1, v2) - getval(ry[i] - 1, v1, v2);
    }
    return res;
}

void solve(int tc) {
    cin >> n >> k;
    for (int i = 0; i < k; i++) {
        cin >> rx[i] >> ry[i] >> rx2[i] >> ry2[i];
        S += (ll)(rx2[i] - rx[i] + 1) * (ry2[i] - ry[i] + 1);
    }
    vector <int> factors = {};
    for (int i = 1; i < n; i++) {
        if (n % i == 0) {
            factors.pb(i);
        }
    }
    for (auto i : factors) {
        A = i;
        sq_A = A * A;
        for (int j = 0; j < 2; j++) {
            Z = j;
            L = getL();
            W = getans();
            ans = min(ans, W + L - S + W);
        }
    }
    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 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 424 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 1 ms 376 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 1836 KB Output is correct
2 Correct 12 ms 732 KB Output is correct
3 Correct 28 ms 1628 KB Output is correct
4 Correct 27 ms 1144 KB Output is correct
5 Correct 35 ms 1656 KB Output is correct
6 Correct 24 ms 1400 KB Output is correct
7 Correct 7 ms 632 KB Output is correct
8 Correct 26 ms 1400 KB Output is correct
9 Correct 55 ms 2096 KB Output is correct
10 Correct 33 ms 1400 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 380 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 6 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 2 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 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 4 ms 380 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 380 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 6 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 2 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 3 ms 376 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 4 ms 380 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 25 ms 760 KB Output is correct
17 Correct 49 ms 1656 KB Output is correct
18 Correct 80 ms 1972 KB Output is correct
19 Correct 384 ms 1812 KB Output is correct
20 Correct 428 ms 2040 KB Output is correct
21 Correct 42 ms 1784 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 61 ms 1016 KB Output is correct
24 Correct 72 ms 1784 KB Output is correct
25 Correct 15 ms 504 KB Output is correct
26 Correct 46 ms 1236 KB Output is correct
27 Correct 77 ms 1524 KB Output is correct
28 Correct 78 ms 2044 KB Output is correct
29 Correct 18 ms 888 KB Output is correct
30 Correct 4 ms 376 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 1836 KB Output is correct
2 Correct 12 ms 732 KB Output is correct
3 Correct 28 ms 1628 KB Output is correct
4 Correct 27 ms 1144 KB Output is correct
5 Correct 35 ms 1656 KB Output is correct
6 Correct 24 ms 1400 KB Output is correct
7 Correct 7 ms 632 KB Output is correct
8 Correct 26 ms 1400 KB Output is correct
9 Correct 55 ms 2096 KB Output is correct
10 Correct 33 ms 1400 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 380 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 6 ms 376 KB Output is correct
18 Correct 3 ms 376 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 4 ms 380 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 25 ms 760 KB Output is correct
27 Correct 49 ms 1656 KB Output is correct
28 Correct 80 ms 1972 KB Output is correct
29 Correct 384 ms 1812 KB Output is correct
30 Correct 428 ms 2040 KB Output is correct
31 Correct 42 ms 1784 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 61 ms 1016 KB Output is correct
34 Correct 72 ms 1784 KB Output is correct
35 Correct 15 ms 504 KB Output is correct
36 Correct 46 ms 1236 KB Output is correct
37 Correct 77 ms 1524 KB Output is correct
38 Correct 78 ms 2044 KB Output is correct
39 Correct 18 ms 888 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 382 ms 2524 KB Output is correct
42 Correct 92 ms 2552 KB Output is correct
43 Correct 206 ms 2520 KB Output is correct
44 Correct 90 ms 2552 KB Output is correct
45 Correct 62 ms 2680 KB Output is correct
46 Correct 426 ms 2680 KB Output is correct
47 Correct 56 ms 2552 KB Output is correct
48 Correct 151 ms 2652 KB Output is correct
49 Correct 84 ms 2424 KB Output is correct
50 Execution timed out 2040 ms 2476 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 380 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 424 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 1 ms 376 KB Output is correct
9 Correct 41 ms 1836 KB Output is correct
10 Correct 12 ms 732 KB Output is correct
11 Correct 28 ms 1628 KB Output is correct
12 Correct 27 ms 1144 KB Output is correct
13 Correct 35 ms 1656 KB Output is correct
14 Correct 24 ms 1400 KB Output is correct
15 Correct 7 ms 632 KB Output is correct
16 Correct 26 ms 1400 KB Output is correct
17 Correct 55 ms 2096 KB Output is correct
18 Correct 33 ms 1400 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 380 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 6 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 2 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 3 ms 376 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 4 ms 380 KB Output is correct
33 Correct 3 ms 376 KB Output is correct
34 Correct 25 ms 760 KB Output is correct
35 Correct 49 ms 1656 KB Output is correct
36 Correct 80 ms 1972 KB Output is correct
37 Correct 384 ms 1812 KB Output is correct
38 Correct 428 ms 2040 KB Output is correct
39 Correct 42 ms 1784 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 61 ms 1016 KB Output is correct
42 Correct 72 ms 1784 KB Output is correct
43 Correct 15 ms 504 KB Output is correct
44 Correct 46 ms 1236 KB Output is correct
45 Correct 77 ms 1524 KB Output is correct
46 Correct 78 ms 2044 KB Output is correct
47 Correct 18 ms 888 KB Output is correct
48 Correct 4 ms 376 KB Output is correct
49 Correct 382 ms 2524 KB Output is correct
50 Correct 92 ms 2552 KB Output is correct
51 Correct 206 ms 2520 KB Output is correct
52 Correct 90 ms 2552 KB Output is correct
53 Correct 62 ms 2680 KB Output is correct
54 Correct 426 ms 2680 KB Output is correct
55 Correct 56 ms 2552 KB Output is correct
56 Correct 151 ms 2652 KB Output is correct
57 Correct 84 ms 2424 KB Output is correct
58 Execution timed out 2040 ms 2476 KB Time limit exceeded
59 Halted 0 ms 0 KB -