답안 #958446

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
958446 2024-04-05T19:41:10 Z shmax Chessboard (IZhO18_chessboard) C++17
70 / 100
388 ms 5752 KB
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 */
/*
 * powered by ANDRIY POPYK
 * in honor of MYSELF and SEGMENT DECOMPOSITION and N^(log(N)) and (Harry Potter and the Methods of Rationality) and Monkie D. Luffy
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

//#pragma GCC optimize("O3")
//#pragma GCC target("avx,avx2,fma")
//#pragma GCC optimization ("unroll-loops")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,sse4,popcnt")

using namespace std;
using namespace __gnu_pbds;
#define int long long
#define float long double
#define elif else if
#define endl "\n"
#define mod 1000000007
#define pi acos(-1)
#define eps 0.000000001
#define inf 1000'000'000'000'000'000LL
#define FIXED(a) cout << fixed << setprecision(a)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define time_init auto start = std::chrono::high_resolution_clock::now()
#define time_report                                       \
    auto end = std::chrono::high_resolution_clock::now(); \
    std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count() << " ms" << endl
#define debug(x) \
    { cerr << #x << " = " << x << endl; }
#define len(x) (int) x.size()
#define sqr(x) ((x) * (x))
#define cube(x) ((x) * (x) * (x))
#define bit(x, i) (((x) >> (i)) & 1)
#define set_bit(x, i) ((x) | (1LL << (i)))
#define clear_bit(x, i) ((x) & (~(1LL << (i))))
#define toggle_bit(x, i) ((x) ^ (1LL << (i)))
#define low_bit(x) ((x) & (-(x)))
#define count_bit(x) __builtin_popcountll(x)
#define srt(x) sort(all(x))
#define rsrt(x) sort(rall(x))
#define mp make_pair
#define maxel(x) (*max_element(all(x)))
#define minel(x) (*min_element(all(x)))
#define maxelpos(x) (max_element(all(x)) - x.begin())
#define minelpos(x) (min_element(all(x)) - x.begin())
#define sum(x) (accumulate(all(x), 0LL))
#define product(x) (accumulate(all(x), 1LL, multiplies<int>()))
#define gcd __gcd
#define lcm(a, b) ((a) / gcd(a, b) * (b))
#define rev(x) (reverse(all(x)))
#define shift_left(x, k) (rotate(x.begin(), x.begin() + k, x.end()))
#define shift_right(x, k) (rotate(x.rbegin(), x.rbegin() + k, x.rend()))
#define is_sorted(x) (is_sorted_until(all(x)) == x.end())
#define is_even(x) (((x) &1) == 0)
#define is_odd(x) (((x) &1) == 1)
#define pow2(x) (1LL << (x))

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

template<typename T>
using min_heap = priority_queue<T, vector<T>, greater<T>>;
template<typename T>
using max_heap = priority_queue<T, vector<T>, less<T>>;
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T>
using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T>
using matrix = vector<vector<T>>;
template<typename T>
using graph = vector<vector<T>>;
using hashmap = gp_hash_table<int, int, custom_hash>;

template<typename T>
vector<T> vect(int n, T val) {
    return vector<T>(n, val);
}

template<typename T>
vector<vector<T>> vect(int n, int m, T val) {
    return vector<vector<T>>(n, vector<T>(m, val));
}

template<typename T>
vector<vector<vector<T>>> vect(int n, int m, int k, T val) {
    return vector<vector<vector<T>>>(n, vector<vector<T>>(m, vector<T>(k, val)));
}

template<typename T>
vector<vector<vector<vector<T>>>> vect(int n, int m, int k, int l, T val) {
    return vector<vector<vector<vector<T>>>>(n, vector<vector<vector<T>>>(m, vector<vector<T>>(k, vector<T>(l, val))));
}

template<typename T>
matrix<T> new_matrix(int n, int m, T val) {
    return matrix<T>(n, vector<T>(m, val));
}

template<typename T>
graph<T> new_graph(int n) {
    return graph<T>(n);
}

template<class T, class S>
inline bool chmax(T &a, const S &b) {
    return (a < b ? a = b, 1 : 0);
}

template<class T, class S>
inline bool chmin(T &a, const S &b) {
    return (a > b ? a = b, 1 : 0);
}

using i8 = int8_t;
using i16 = int16_t;
using i32 = int32_t;
using i64 = int64_t;
using i128 = __int128_t;
using u8 = uint8_t;
using u16 = uint16_t;
using u32 = uint32_t;
using u64 = uint64_t;
using u128 = __uint128_t;

template<typename T>
using vec = vector<T>;

using pII = pair<int, int>;
template<typename T>
using enumerated = pair<T, int>;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, k;
    cin >> n >> k;
    struct rectangle {
        int x1, y1, x2, y2;
    };
    vec<rectangle> rects(k);
    for (int i = 0; i < k; i++) {
        cin >> rects[i].x1 >> rects[i].y1 >> rects[i].x2 >> rects[i].y2;
        rects[i].x1--;
        rects[i].y1--;
        rects[i].x2--;
        rects[i].y2--;
    }
    int size;
    bool inv = false;
    auto get_color = [&](int x, int y) -> bool {
        int xb = x / size;
        int yb = y / size;
        int ans = (xb % 2) ^ (yb % 2) ^ inv;
        return ans;
    };
    vec<int> divs;
    for (int i = 1; i * i <= n; i++) {
        if (n % i == 0) {
            divs.push_back(i);
            if (i * i != n) {
                divs.push_back(n / i);
            }
        }
    }
    srt(divs);
    int best = inf;
    for (auto d: divs) {
        if (d == n) break;
        size = d;
        for (int t = 0; t < 2; t++) {
            int cnt_black = ((n / size) * (n / size) + inv) / 2;
            cnt_black *= size * size;
            int good = 0;
            int ans = 0;
            for (auto r: rects) {
                if (get_color(r.x1, r.y1) == 1) {
                    good++;
                } else {
                    ans++;
                }
            }
            ans += cnt_black - good;

            chmin(best, ans);
            inv ^= 1;
        }
    }
    cout << best << endl;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 3688 KB Output is correct
2 Correct 5 ms 1112 KB Output is correct
3 Correct 12 ms 2396 KB Output is correct
4 Correct 15 ms 2652 KB Output is correct
5 Correct 17 ms 3312 KB Output is correct
6 Correct 11 ms 2140 KB Output is correct
7 Correct 3 ms 860 KB Output is correct
8 Correct 11 ms 2140 KB Output is correct
9 Correct 27 ms 5320 KB Output is correct
10 Correct 16 ms 3164 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 472 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 352 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 356 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 472 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 352 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 356 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 9 ms 1628 KB Output is correct
17 Correct 21 ms 4696 KB Output is correct
18 Correct 29 ms 4952 KB Output is correct
19 Correct 83 ms 4444 KB Output is correct
20 Correct 92 ms 4952 KB Output is correct
21 Correct 19 ms 4184 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 17 ms 2392 KB Output is correct
24 Correct 26 ms 4952 KB Output is correct
25 Correct 4 ms 860 KB Output is correct
26 Correct 17 ms 2908 KB Output is correct
27 Correct 24 ms 3476 KB Output is correct
28 Correct 27 ms 4956 KB Output is correct
29 Correct 9 ms 1880 KB Output is correct
30 Correct 2 ms 348 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 3688 KB Output is correct
2 Correct 5 ms 1112 KB Output is correct
3 Correct 12 ms 2396 KB Output is correct
4 Correct 15 ms 2652 KB Output is correct
5 Correct 17 ms 3312 KB Output is correct
6 Correct 11 ms 2140 KB Output is correct
7 Correct 3 ms 860 KB Output is correct
8 Correct 11 ms 2140 KB Output is correct
9 Correct 27 ms 5320 KB Output is correct
10 Correct 16 ms 3164 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 472 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 352 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 344 KB Output is correct
20 Correct 0 ms 356 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 460 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 9 ms 1628 KB Output is correct
27 Correct 21 ms 4696 KB Output is correct
28 Correct 29 ms 4952 KB Output is correct
29 Correct 83 ms 4444 KB Output is correct
30 Correct 92 ms 4952 KB Output is correct
31 Correct 19 ms 4184 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 17 ms 2392 KB Output is correct
34 Correct 26 ms 4952 KB Output is correct
35 Correct 4 ms 860 KB Output is correct
36 Correct 17 ms 2908 KB Output is correct
37 Correct 24 ms 3476 KB Output is correct
38 Correct 27 ms 4956 KB Output is correct
39 Correct 9 ms 1880 KB Output is correct
40 Correct 2 ms 348 KB Output is correct
41 Correct 76 ms 4956 KB Output is correct
42 Correct 34 ms 5712 KB Output is correct
43 Correct 49 ms 4956 KB Output is correct
44 Correct 32 ms 5456 KB Output is correct
45 Correct 30 ms 5724 KB Output is correct
46 Correct 86 ms 5396 KB Output is correct
47 Correct 25 ms 4952 KB Output is correct
48 Correct 41 ms 5088 KB Output is correct
49 Correct 29 ms 4956 KB Output is correct
50 Correct 356 ms 5468 KB Output is correct
51 Correct 376 ms 5716 KB Output is correct
52 Correct 351 ms 5332 KB Output is correct
53 Correct 380 ms 5752 KB Output is correct
54 Correct 343 ms 5152 KB Output is correct
55 Correct 388 ms 5748 KB Output is correct
56 Correct 333 ms 5212 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 456 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 19 ms 3688 KB Output is correct
10 Correct 5 ms 1112 KB Output is correct
11 Correct 12 ms 2396 KB Output is correct
12 Correct 15 ms 2652 KB Output is correct
13 Correct 17 ms 3312 KB Output is correct
14 Correct 11 ms 2140 KB Output is correct
15 Correct 3 ms 860 KB Output is correct
16 Correct 11 ms 2140 KB Output is correct
17 Correct 27 ms 5320 KB Output is correct
18 Correct 16 ms 3164 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 472 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 352 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 356 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 460 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 9 ms 1628 KB Output is correct
35 Correct 21 ms 4696 KB Output is correct
36 Correct 29 ms 4952 KB Output is correct
37 Correct 83 ms 4444 KB Output is correct
38 Correct 92 ms 4952 KB Output is correct
39 Correct 19 ms 4184 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 17 ms 2392 KB Output is correct
42 Correct 26 ms 4952 KB Output is correct
43 Correct 4 ms 860 KB Output is correct
44 Correct 17 ms 2908 KB Output is correct
45 Correct 24 ms 3476 KB Output is correct
46 Correct 27 ms 4956 KB Output is correct
47 Correct 9 ms 1880 KB Output is correct
48 Correct 2 ms 348 KB Output is correct
49 Correct 76 ms 4956 KB Output is correct
50 Correct 34 ms 5712 KB Output is correct
51 Correct 49 ms 4956 KB Output is correct
52 Correct 32 ms 5456 KB Output is correct
53 Correct 30 ms 5724 KB Output is correct
54 Correct 86 ms 5396 KB Output is correct
55 Correct 25 ms 4952 KB Output is correct
56 Correct 41 ms 5088 KB Output is correct
57 Correct 29 ms 4956 KB Output is correct
58 Correct 356 ms 5468 KB Output is correct
59 Correct 376 ms 5716 KB Output is correct
60 Correct 351 ms 5332 KB Output is correct
61 Correct 380 ms 5752 KB Output is correct
62 Correct 343 ms 5152 KB Output is correct
63 Correct 388 ms 5748 KB Output is correct
64 Correct 333 ms 5212 KB Output is correct
65 Correct 1 ms 348 KB Output is correct
66 Incorrect 0 ms 348 KB Output isn't correct
67 Halted 0 ms 0 KB -