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답안 #155161

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
155161 2019-09-26T17:47:30 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, B, 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 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) >> 1LL) * A * a;
    res += (q >> 1LL) * A * b;
    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();
            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

# 결과 실행 시간 메모리 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 1 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 380 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

# 결과 실행 시간 메모리 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 1316 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 1400 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 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 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 2 ms 504 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 376 KB Output is correct
15 Correct 3 ms 380 KB Output is correct

Subtask #4
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 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 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 2 ms 504 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 376 KB Output is correct
15 Correct 3 ms 380 KB Output is correct
16 Correct 24 ms 848 KB Output is correct
17 Correct 43 ms 1656 KB Output is correct
18 Correct 81 ms 1916 KB Output is correct
19 Correct 395 ms 1812 KB Output is correct
20 Correct 440 ms 1912 KB Output is correct
21 Correct 42 ms 1656 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 63 ms 1148 KB Output is correct
24 Correct 73 ms 1784 KB Output is correct
25 Correct 14 ms 632 KB Output is correct
26 Correct 47 ms 1308 KB Output is correct
27 Correct 78 ms 1400 KB Output is correct
28 Correct 79 ms 1912 KB Output is correct
29 Correct 18 ms 944 KB Output is correct
30 Correct 4 ms 380 KB Output is correct

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 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 1316 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 1400 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 2 ms 376 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 504 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 376 KB Output is correct
25 Correct 3 ms 380 KB Output is correct
26 Correct 24 ms 848 KB Output is correct
27 Correct 43 ms 1656 KB Output is correct
28 Correct 81 ms 1916 KB Output is correct
29 Correct 395 ms 1812 KB Output is correct
30 Correct 440 ms 1912 KB Output is correct
31 Correct 42 ms 1656 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 63 ms 1148 KB Output is correct
34 Correct 73 ms 1784 KB Output is correct
35 Correct 14 ms 632 KB Output is correct
36 Correct 47 ms 1308 KB Output is correct
37 Correct 78 ms 1400 KB Output is correct
38 Correct 79 ms 1912 KB Output is correct
39 Correct 18 ms 944 KB Output is correct
40 Correct 4 ms 380 KB Output is correct
41 Correct 395 ms 2424 KB Output is correct
42 Correct 94 ms 2680 KB Output is correct
43 Correct 211 ms 2588 KB Output is correct
44 Correct 93 ms 2552 KB Output is correct
45 Correct 62 ms 2680 KB Output is correct
46 Correct 493 ms 2668 KB Output is correct
47 Correct 56 ms 2552 KB Output is correct
48 Correct 152 ms 2552 KB Output is correct
49 Correct 86 ms 2424 KB Output is correct
50 Execution timed out 2039 ms 2424 KB Time limit exceeded
51 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# 결과 실행 시간 메모리 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 1 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 380 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 1316 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 1400 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 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 3 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 2 ms 504 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 376 KB Output is correct
33 Correct 3 ms 380 KB Output is correct
34 Correct 24 ms 848 KB Output is correct
35 Correct 43 ms 1656 KB Output is correct
36 Correct 81 ms 1916 KB Output is correct
37 Correct 395 ms 1812 KB Output is correct
38 Correct 440 ms 1912 KB Output is correct
39 Correct 42 ms 1656 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 63 ms 1148 KB Output is correct
42 Correct 73 ms 1784 KB Output is correct
43 Correct 14 ms 632 KB Output is correct
44 Correct 47 ms 1308 KB Output is correct
45 Correct 78 ms 1400 KB Output is correct
46 Correct 79 ms 1912 KB Output is correct
47 Correct 18 ms 944 KB Output is correct
48 Correct 4 ms 380 KB Output is correct
49 Correct 395 ms 2424 KB Output is correct
50 Correct 94 ms 2680 KB Output is correct
51 Correct 211 ms 2588 KB Output is correct
52 Correct 93 ms 2552 KB Output is correct
53 Correct 62 ms 2680 KB Output is correct
54 Correct 493 ms 2668 KB Output is correct
55 Correct 56 ms 2552 KB Output is correct
56 Correct 152 ms 2552 KB Output is correct
57 Correct 86 ms 2424 KB Output is correct
58 Execution timed out 2039 ms 2424 KB Time limit exceeded
59 Halted 0 ms 0 KB -