oj.uz

Submission #378570

# Submission time Handle Problem Language Result Execution time Memory
378570 2021-03-17T01:50:40 Z 2qbingxuan Chessboard (IZhO18_chessboard) C++14
47 / 100
 340 ms 2028 KB 
#include <bits/stdc++.h>
#ifdef local
#define safe std::cerr<<__PRETTY_FUNCTION__<<" line "<<__LINE__<<" safe\n"
#define debug(a...) qqbx(#a, a)
template <typename ...T> void qqbx(const char *s, T ...a) {
    int cnt = sizeof...(T);
    ((std::cerr << "\033[1;32m(" << s << ") = (") , ... , (std::cerr << a << (--cnt ? ", " : ")\033[0m\n")));
}
#else
#define safe ((void)0)
#define debug(...) ((void)0)
#endif // local

using namespace std;
using ll = int64_t;
const int maxn = 100025;
const ll INF = 1e18;
bool isBlack(int x, int y) {
    return (x + y) & 1;
}

ll calc2d(int x, int y, int k, bool c) {
    if (x < 0 || y < 0) return 0;
    ++x, ++y;
    ll qx = x / k, rx = x % k;
    ll qy = y / k, ry = y % k;
    ll ans = 0;
    ans += ry * k * (isBlack(0, qy) == c ? (qx + 1) / 2 : qx / 2);
    ans += rx * k * (isBlack(qx, 0) == c ? (qy + 1) / 2 : qy / 2);
    ans += k * k * (isBlack(0, 0) == c ? (qx * qy + 1) / 2 : qx * qy / 2);
    // debug((isBlack(0, qy+1) == c ? (qx + 1) / 2 : qx / 2));
    debug(rx , k , (isBlack(qx, 0) == c ? (qy + 1) / 2 : qy / 2));
    // debug((isBlack(0, 0) == c ? (qx * qy + 1) / 2 : qx * qy / 2));
    if (isBlack(qx, qy) == c) ans += rx * ry, debug(rx, ry);
    /*
    int res = 0;
    for (int i = 0; i < x; i++)
        for (int j = 0; j < y; j++)
            if (((i / k) + (j / k)) % 2 == c)
                ++res;
    debug(x, y, k, c, ans, res);
    return res;
    */
    return ans;
}
ll calc(int L, vector<tuple<int,int,int,int>> &v, int k) {
    ll res = INF;
    for (int c: {0, 1}) {
        // cerr << "============\n";
        ll ans = calc2d(L-1, L-1, k, c);
        for (auto [lx, ly, rx, ry]: v) {
            debug(lx, ly, rx, ry);
            ans += (rx - lx) * (ry - ly);
            ans -= 2 * (calc2d(rx, ry, k, c) - calc2d(rx, ly, k, c) - calc2d(lx, ry, k, c) + calc2d(lx, ly, k, c));
        }
        debug(ans, k, c);
        res = min(ans, res);
    }
    return res;
}
signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    int L, n;
    cin >> L >> n;
    vector<tuple<int,int,int,int>> rect(n);
    for (auto &[a, b, c, d]: rect) cin >> a >> b >> c >> d, --a, --b, --a, --b, --c, --d;
    ll ans = INF;
    for (int i = 1; i*i <= L; i++) {
        if (L % i == 0) {
            if (i != L) ans = min(ans, calc(L, rect, i));
            if (L/i != L) ans = min(ans, calc(L, rect, L / i));
        }
        if (i*i > L) break;

    }
    cout << ans << '\n';
}
/*
6 8
3 3 3 3
1 2 1 2
3 4 3 4
5 5 5 5
4 3 4 3
4 4 4 4
2 1 2 1
3 6 3 6
 */

Compilation message

chessboard.cpp: In function 'll calc(int, std::vector<std::tuple<int, int, int, int> >&, int)':
chessboard.cpp:51:19: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   51 |         for (auto [lx, ly, rx, ry]: v) {
      |                   ^
chessboard.cpp: In function 'int main()':
chessboard.cpp:66:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   66 |     for (auto &[a, b, c, d]: rect) cin >> a >> b >> c >> d, --a, --b, --a, --b, --c, --d;
      |                ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 1260 KB Output is correct
2 Correct 9 ms 620 KB Output is correct
3 Correct 20 ms 1004 KB Output is correct
4 Correct 22 ms 1004 KB Output is correct
5 Correct 27 ms 1132 KB Output is correct
6 Correct 18 ms 876 KB Output is correct
7 Correct 4 ms 492 KB Output is correct
8 Correct 18 ms 876 KB Output is correct
9 Correct 45 ms 1772 KB Output is correct
10 Correct 25 ms 1132 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 2 ms 364 KB Output is correct
16 Correct 19 ms 748 KB Output is correct
17 Correct 37 ms 1664 KB Output is correct
18 Correct 67 ms 2028 KB Output is correct
19 Correct 321 ms 1772 KB Output is correct
20 Correct 340 ms 1900 KB Output is correct
21 Correct 35 ms 1644 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 50 ms 1004 KB Output is correct
24 Correct 62 ms 1772 KB Output is correct
25 Correct 10 ms 492 KB Output is correct
26 Correct 38 ms 1260 KB Output is correct
27 Correct 65 ms 1388 KB Output is correct
28 Correct 65 ms 1772 KB Output is correct
29 Correct 15 ms 876 KB Output is correct
30 Correct 2 ms 364 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 1260 KB Output is correct
2 Correct 9 ms 620 KB Output is correct
3 Correct 20 ms 1004 KB Output is correct
4 Correct 22 ms 1004 KB Output is correct
5 Correct 27 ms 1132 KB Output is correct
6 Correct 18 ms 876 KB Output is correct
7 Correct 4 ms 492 KB Output is correct
8 Correct 18 ms 876 KB Output is correct
9 Correct 45 ms 1772 KB Output is correct
10 Correct 25 ms 1132 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 2 ms 364 KB Output is correct
26 Correct 19 ms 748 KB Output is correct
27 Correct 37 ms 1664 KB Output is correct
28 Correct 67 ms 2028 KB Output is correct
29 Correct 321 ms 1772 KB Output is correct
30 Correct 340 ms 1900 KB Output is correct
31 Correct 35 ms 1644 KB Output is correct
32 Correct 2 ms 364 KB Output is correct
33 Correct 50 ms 1004 KB Output is correct
34 Correct 62 ms 1772 KB Output is correct
35 Correct 10 ms 492 KB Output is correct
36 Correct 38 ms 1260 KB Output is correct
37 Correct 65 ms 1388 KB Output is correct
38 Correct 65 ms 1772 KB Output is correct
39 Correct 15 ms 876 KB Output is correct
40 Correct 2 ms 364 KB Output is correct
41 Incorrect 268 ms 1644 KB Output isn't correct
42 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 32 ms 1260 KB Output is correct
10 Correct 9 ms 620 KB Output is correct
11 Correct 20 ms 1004 KB Output is correct
12 Correct 22 ms 1004 KB Output is correct
13 Correct 27 ms 1132 KB Output is correct
14 Correct 18 ms 876 KB Output is correct
15 Correct 4 ms 492 KB Output is correct
16 Correct 18 ms 876 KB Output is correct
17 Correct 45 ms 1772 KB Output is correct
18 Correct 25 ms 1132 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 2 ms 364 KB Output is correct
32 Correct 2 ms 364 KB Output is correct
33 Correct 2 ms 364 KB Output is correct
34 Correct 19 ms 748 KB Output is correct
35 Correct 37 ms 1664 KB Output is correct
36 Correct 67 ms 2028 KB Output is correct
37 Correct 321 ms 1772 KB Output is correct
38 Correct 340 ms 1900 KB Output is correct
39 Correct 35 ms 1644 KB Output is correct
40 Correct 2 ms 364 KB Output is correct
41 Correct 50 ms 1004 KB Output is correct
42 Correct 62 ms 1772 KB Output is correct
43 Correct 10 ms 492 KB Output is correct
44 Correct 38 ms 1260 KB Output is correct
45 Correct 65 ms 1388 KB Output is correct
46 Correct 65 ms 1772 KB Output is correct
47 Correct 15 ms 876 KB Output is correct
48 Correct 2 ms 364 KB Output is correct
49 Incorrect 268 ms 1644 KB Output isn't correct
50 Halted 0 ms 0 KB -