oj.uz

Submission #155166

# Submission time Handle Problem Language Result Execution time Memory
155166 2019-09-26T18:10:43 Z srvlt Chessboard (IZhO18_chessboard) C++14
47 / 100
 2000 ms 2716 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, sq_A;

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

int num(int x) {
    return (x - 1) / A & 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;
            W = getans();
            ans = min(ans, W + W + getL() - S);
        }
    }
    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 376 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 1796 KB Output is correct
2 Correct 12 ms 760 KB Output is correct
3 Correct 28 ms 1656 KB Output is correct
4 Correct 26 ms 1144 KB Output is correct
5 Correct 35 ms 1656 KB Output is correct
6 Correct 24 ms 1272 KB Output is correct
7 Correct 7 ms 632 KB Output is correct
8 Correct 24 ms 1272 KB Output is correct
9 Correct 55 ms 2040 KB Output is correct
10 Correct 32 ms 1528 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 380 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 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 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 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 380 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 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 380 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 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 23 ms 760 KB Output is correct
17 Correct 43 ms 1628 KB Output is correct
18 Correct 81 ms 1976 KB Output is correct
19 Correct 383 ms 1800 KB Output is correct
20 Correct 429 ms 1992 KB Output is correct
21 Correct 41 ms 1660 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 61 ms 1088 KB Output is correct
24 Correct 72 ms 1784 KB Output is correct
25 Correct 14 ms 504 KB Output is correct
26 Correct 46 ms 1272 KB Output is correct
27 Correct 76 ms 1484 KB Output is correct
28 Correct 78 ms 1912 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 40 ms 1796 KB Output is correct
2 Correct 12 ms 760 KB Output is correct
3 Correct 28 ms 1656 KB Output is correct
4 Correct 26 ms 1144 KB Output is correct
5 Correct 35 ms 1656 KB Output is correct
6 Correct 24 ms 1272 KB Output is correct
7 Correct 7 ms 632 KB Output is correct
8 Correct 24 ms 1272 KB Output is correct
9 Correct 55 ms 2040 KB Output is correct
10 Correct 32 ms 1528 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 380 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 376 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 2 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 23 ms 760 KB Output is correct
27 Correct 43 ms 1628 KB Output is correct
28 Correct 81 ms 1976 KB Output is correct
29 Correct 383 ms 1800 KB Output is correct
30 Correct 429 ms 1992 KB Output is correct
31 Correct 41 ms 1660 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 61 ms 1088 KB Output is correct
34 Correct 72 ms 1784 KB Output is correct
35 Correct 14 ms 504 KB Output is correct
36 Correct 46 ms 1272 KB Output is correct
37 Correct 76 ms 1484 KB Output is correct
38 Correct 78 ms 1912 KB Output is correct
39 Correct 18 ms 888 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 384 ms 2524 KB Output is correct
42 Correct 93 ms 2552 KB Output is correct
43 Correct 207 ms 2592 KB Output is correct
44 Correct 91 ms 2552 KB Output is correct
45 Correct 64 ms 2716 KB Output is correct
46 Correct 425 ms 2552 KB Output is correct
47 Correct 55 ms 2552 KB Output is correct
48 Correct 149 ms 2552 KB Output is correct
49 Correct 86 ms 2500 KB Output is correct
50 Execution timed out 2057 ms 2424 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 376 KB Output is correct
9 Correct 40 ms 1796 KB Output is correct
10 Correct 12 ms 760 KB Output is correct
11 Correct 28 ms 1656 KB Output is correct
12 Correct 26 ms 1144 KB Output is correct
13 Correct 35 ms 1656 KB Output is correct
14 Correct 24 ms 1272 KB Output is correct
15 Correct 7 ms 632 KB Output is correct
16 Correct 24 ms 1272 KB Output is correct
17 Correct 55 ms 2040 KB Output is correct
18 Correct 32 ms 1528 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 380 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 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 380 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 376 KB Output is correct
33 Correct 3 ms 376 KB Output is correct
34 Correct 23 ms 760 KB Output is correct
35 Correct 43 ms 1628 KB Output is correct
36 Correct 81 ms 1976 KB Output is correct
37 Correct 383 ms 1800 KB Output is correct
38 Correct 429 ms 1992 KB Output is correct
39 Correct 41 ms 1660 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 61 ms 1088 KB Output is correct
42 Correct 72 ms 1784 KB Output is correct
43 Correct 14 ms 504 KB Output is correct
44 Correct 46 ms 1272 KB Output is correct
45 Correct 76 ms 1484 KB Output is correct
46 Correct 78 ms 1912 KB Output is correct
47 Correct 18 ms 888 KB Output is correct
48 Correct 4 ms 376 KB Output is correct
49 Correct 384 ms 2524 KB Output is correct
50 Correct 93 ms 2552 KB Output is correct
51 Correct 207 ms 2592 KB Output is correct
52 Correct 91 ms 2552 KB Output is correct
53 Correct 64 ms 2716 KB Output is correct
54 Correct 425 ms 2552 KB Output is correct
55 Correct 55 ms 2552 KB Output is correct
56 Correct 149 ms 2552 KB Output is correct
57 Correct 86 ms 2500 KB Output is correct
58 Execution timed out 2057 ms 2424 KB Time limit exceeded
59 Halted 0 ms 0 KB -