oj.uz

Submission #907075

# Submission time Handle Problem Language Result Execution time Memory
907075 2024-01-15T06:45:50 Z gaga999 Sandcastle 2 (JOI22_ho_t5) C++17
100 / 100
 481 ms 21588 KB 
#include <cstdio>
#include <stdio.h>
#include <iostream>
#include <math.h>
#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <algorithm>
#include <utility>
#include <set>
#include <map>
#include <stdlib.h>
#include <cstring>
#include <string.h>
#include <string>
#include <sstream>
#include <assert.h>
#include <climits>
#include <sstream>
#include <numeric>
#include <time.h>
#include <limits.h>
#include <list>
#include <bitset>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <iomanip>
#include <complex>
#include <chrono>
#include <fstream>
#include <functional>
#include <unistd.h>
// #pragma GCC optimize("Ofast,no-stack-protector")
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx,avx2,bmi,bmi2,lzcnt,popcnt")
#define lowbit(x) ((x) & -(x))
#define ml(a, b) ((1ll * (a) * (b)) % M)
#define tml(a, b) (a) = ((1ll * (a) * (b)) % M)
#define ad(a, b) ((0ll + (a) + (b)) % M)
#define tad(a, b) (a) = ((0ll + (a) + (b)) % M)
#define mi(a, b) ((0ll + M + (a) - (b)) % M)
#define tmi(a, b) (a) = ((0ll + M + (a) - (b)) % M)
#define tmin(a, b) (a) = min((a), (b))
#define tmax(a, b) (a) = max((a), (b))
#define iter(a) (a).begin(), (a).end()
#define riter(a) (a).rbegin(), (a).rend()
#define init(a, b) memset((a), (b), sizeof(a))
#define cpy(a, b) memcpy((a), (b), sizeof(a))
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define pb emplace_back
#define mpr make_pair
#define ls(i) ((i) << 1)
#define rs(i) ((i) << 1 | 1)
#define INF 0x3f3f3f3f
#define NIF 0xc0c0c0c0
#define eps 1e-9
#define F first
#define S second
#define AC cin.tie(0)->sync_with_stdio(0)
using namespace std;
typedef long long llt;
typedef pair<int, int> pii;
typedef pair<double, double> pdd;
typedef pair<llt, llt> pll;
typedef complex<double> cd;
// const int M = 998244353;

// random_device rm;
// mt19937 rg(rm());
// default_random_engine rg(rm());
// uniform_int_distribution<int> rd(INT_MIN, INT_MAX);
// uniform_real_distribution<double> rd(0, M_PI);

void db() { cerr << "\n"; }
template <class T, class... U>
void db(T a, U... b) { cerr << a << " ", db(b...); }

inline char gc()
{
    const static int SZ = 1 << 16;
    static char buf[SZ], *p1, *p2;
    if (p1 == p2 && (p2 = buf + fread(p1 = buf, 1, SZ, stdin), p1 == p2))
        return -1;
    return *p1++;
}
void rd() {}
template <typename T, typename... U>
void rd(T &x, U &...y)
{
    x = 0;
    bool f = 0;
    char c = gc();
    while (!isdigit(c))
        f ^= !(c ^ 45), c = gc();
    while (isdigit(c))
        x = (x << 1) + (x << 3) + (c ^ 48), c = gc();
    f && (x = -x), rd(y...);
}

template <typename T>
void prt(T x)
{
    if (x < 0)
        putchar('-'), x = -x;
    if (x > 9)
        prt(x / 10);
    putchar((x % 10) ^ 48);
}

vector<vector<int>> gd, v[3][3][3][3], v1[3][3], v2[3][3], vr;
#define p1 [x - 1][y]
#define p2 [x][y - 1]
#define p3 [x][y + 1]
#define p4 [x + 1][y]
#define c1 x != l
#define c2 y != u
#define c3 y != d
#define c4 x != r
int gv(int x, int y, int l, int r, int u, int d)
{
    int mn = INF, cr = gd[x][y], res = 0;
    if (c1 && gd p1 > cr && gd p1 < mn)
        mn = gd p1, res = 1;
    if (c2 && gd p2 > cr && gd p2 < mn)
        mn = gd p2, res = 2;
    if (c3 && gd p3 > cr && gd p3 < mn)
        mn = gd p3, res = 3;
    if (c4 && gd p4 > cr && gd p4 < mn)
        mn = gd p4, res = 4;
    return res;
}
#define pp l, r, u, d
int slv(int x, int y, int l, int r, int u, int d)
{
    int res = 0;
    if (c1 && gv(x - 1, y, pp) == 4)
        res++;
    if (c2 && gv(x, y - 1, pp) == 3)
        res++;
    if (c3 && gv(x, y + 1, pp) == 2)
        res++;
    if (c4 && gv(x + 1, y, pp) == 1)
        res++;
    return !res;
}
inline int grc(int l, int r, int i, int j)
{
    return vr[l][i] + vr[r][j] - vr[l][j] - vr[r][i];
}
#define vt(i, j) vector<vector<int>>(i, vector<int>(j))
int cnt[50004];
signed main()
{
    int n, m;
    rd(n, m);
    if (n > m)
    {
        swap(n, m);
        gd = vt(n, m);
        for (int i = 0; i < m; i++)
            for (int j = 0; j < n; j++)
                rd(gd[j][i]);
    }
    else
    {
        gd = vt(n, m);
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
                rd(gd[i][j]);
    }
    for (int l = 0; l < 3; l++)
    {
        for (int r = 0; r < 3; r++)
        {
            for (int u = 0; u < 3; u++)
            {
                for (int d = 0; d < 3; d++)
                {
                    v[l][r][u][d] = vt(n, m);
                    for (int i = 0; i < n; i++)
                        for (int j = 0; j < m; j++)
                            v[l][r][u][d][i][j] =
                                slv(i, j, max(0, i - l), min(n - 1, i + r), max(0, j - u), min(m - 1, j + d));
                }
            }
        }
    }
    for (int l = 0; l < 3; l++)
    {
        for (int r = 0; r < 3; r++)
        {
            v1[l][r] = v2[l][r] = vt(n, m);
            for (int i = 0; i < n; i++)
            {
                v1[l][r][i][0] = v[l][r][2][2][i][0];
                for (int j = 1; j < m; j++)
                    v1[l][r][i][j] = v[l][r][2][2][i][j] + v1[l][r][i][j - 1];
            }
            for (int j = 0; j < m; j++)
            {
                v2[l][r][0][j] = v[2][2][l][r][0][j];
                for (int i = 1; i < n; i++)
                    v2[l][r][i][j] = v[2][2][l][r][i][j] + v2[l][r][i - 1][j];
            }
        }
    }
    vr = vt(n, m);
    for (int i = 0; i < m; i++)
        vr[0][i] = v[2][2][2][2][0][i];
    for (int i = 1; i < n; i++)
    {
        vr[i][0] = v[2][2][2][2][0][i];
        for (int j = 1; j < m; j++)
        {
            vr[i][j] = vr[i - 1][j] + vr[i][j - 1] -
                       vr[i - 1][j - 1] + v[2][2][2][2][i][j];
        }
    }
    llt ans = 0;
    for (int l = 0; l < n; l++)
    {
        for (int r = 0; r < n; r++)
        {
            if (r - l < 4)
            {
                for (int i = 3; i < m; i++)
                {
                    int tp = 1;
                    for (int a = l; a <= r; a++)
                    {
                        int x = min(2, a - l), y = min(2, r - a);
                        tp += v1[x][y][a][i - 2] - v[x][y][0][2][a][i - 3] - v[x][y][1][2][a][i - 2];
                    }
                    if (tp >= 0)
                        cnt[tp]++;
                    tp = 0;
                    for (int a = l; a <= r; a++)
                    {
                        int x = min(2, a - l), y = min(2, r - a);
                        tp += v1[x][y][a][i - 2] + v[x][y][2][1][a][i - 1] + v[x][y][2][0][a][i];
                    }
                    ans += cnt[tp];
                }
                for (int i = 3; i < m; i++)
                {
                    int tp = 1;
                    for (int a = l; a <= r; a++)
                    {
                        int x = min(2, a - l), y = min(2, r - a);
                        tp += v1[x][y][a][i - 2] - v[x][y][0][2][a][i - 3] - v[x][y][1][2][a][i - 2];
                    }
                    if (tp >= 0)
                        cnt[tp]--;
                }
                for (int i = 0; i < m; i++)
                {
                    for (int j = i; j < min(i + 3, m); j++)
                    {
                        int tp = 0;
                        for (int a = l; a <= r; a++)
                            for (int b = i; b <= j; b++)
                                tp += v[min(2, a - l)][min(2, r - a)][min(2, b - i)][min(2, j - b)][a][b];
                        if (tp == 1)
                            ans++;
                    }
                }
            }
            else
            {
                for (int i = 0; i < m; i++)
                {
                    for (int j = i; j < min(i + 3, m); j++)
                    {
                        int tp = 0;
                        for (int b = i; b <= j; b++)
                        {
                            int x = min(b - i, 2), y = min(j - b, 2);
                            tp += v[0][2][x][y][l][b];
                            tp += v[1][2][x][y][l + 1][b];
                            tp += v[2][0][x][y][r][b];
                            tp += v[2][1][x][y][r - 1][b];
                            tp += v2[x][y][r - 2][b] - v2[x][y][l + 1][b];
                        }
                        if (tp == 1)
                            ans++;
                    }
                }
                for (int i = 3; i < m; i++)
                {
                    int tp = 1;
                    tp += v1[0][2][l][i - 2] - v[0][2][0][2][l][i - 3] - v[0][2][1][2][l][i - 2];
                    tp += v1[1][2][l + 1][i - 2] - v[1][2][0][2][l + 1][i - 3] - v[1][2][1][2][l + 1][i - 2];
                    tp += v1[2][0][r][i - 2] - v[2][0][0][2][r][i - 3] - v[2][0][1][2][r][i - 2];
                    tp += v1[2][1][r - 1][i - 2] - v[2][1][0][2][r - 1][i - 3] - v[2][1][1][2][r - 1][i - 2];
                    tp += vr[r - 2][i - 2] - vr[l + 1][i - 2] -
                          v2[0][2][r - 2][i - 3] + v2[0][2][l + 1][i - 3] -
                          v2[1][2][r - 2][i - 2] + v2[1][2][l + 1][i - 2];
                    if (tp >= 0)
                        cnt[tp]++;
                    tp = 0;
                    tp += v1[0][2][l][i - 2] + v[0][2][2][0][l][i] + v[0][2][2][1][l][i - 1];
                    tp += v1[1][2][l + 1][i - 2] + v[1][2][2][0][l + 1][i] + v[1][2][2][1][l + 1][i - 1];
                    tp += v1[2][0][r][i - 2] + v[2][0][2][0][r][i] + v[2][0][2][1][r][i - 1];
                    tp += v1[2][1][r - 1][i - 2] + v[2][1][2][0][r - 1][i] + v[2][1][2][1][r - 1][i - 1];
                    tp += vr[r - 2][i - 2] - vr[l + 1][i - 2] +
                          v2[2][0][r - 2][i] - v2[2][0][l + 1][i] +
                          v2[2][1][r - 2][i - 1] - v2[2][1][l + 1][i - 1];
                    ans += cnt[tp];
                }
                for (int i = 3; i < m; i++)
                {
                    int tp = 1;
                    tp += v1[0][2][l][i - 2] - v[0][2][0][2][l][i - 3] - v[0][2][1][2][l][i - 2];
                    tp += v1[1][2][l + 1][i - 2] - v[1][2][0][2][l + 1][i - 3] - v[1][2][1][2][l + 1][i - 2];
                    tp += v1[2][0][r][i - 2] - v[2][0][0][2][r][i - 3] - v[2][0][1][2][r][i - 2];
                    tp += v1[2][1][r - 1][i - 2] - v[2][1][0][2][r - 1][i - 3] - v[2][1][1][2][r - 1][i - 2];
                    tp += vr[r - 2][i - 2] - vr[l + 1][i - 2] -
                          v2[0][2][r - 2][i - 3] + v2[0][2][l + 1][i - 3] -
                          v2[1][2][r - 2][i - 2] + v2[1][2][l + 1][i - 2];
                    if (tp >= 0)
                        cnt[tp]--;
                }
            }
        }
    }
    prt(ans), putchar('\n');
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 53 ms 20296 KB Output is correct
3 Correct 54 ms 20116 KB Output is correct
4 Correct 49 ms 20364 KB Output is correct
5 Correct 48 ms 20376 KB Output is correct
6 Correct 60 ms 20544 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 3 ms 860 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 7 ms 1116 KB Output is correct
10 Correct 4 ms 1116 KB Output is correct
11 Correct 2 ms 856 KB Output is correct
12 Correct 2 ms 860 KB Output is correct
13 Correct 4 ms 1116 KB Output is correct
14 Correct 4 ms 860 KB Output is correct
15 Correct 6 ms 948 KB Output is correct
16 Correct 8 ms 1112 KB Output is correct

Subtask #4
56.0 / 56.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 3 ms 860 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 7 ms 1116 KB Output is correct
10 Correct 4 ms 1116 KB Output is correct
11 Correct 2 ms 856 KB Output is correct
12 Correct 2 ms 860 KB Output is correct
13 Correct 4 ms 1116 KB Output is correct
14 Correct 4 ms 860 KB Output is correct
15 Correct 6 ms 948 KB Output is correct
16 Correct 8 ms 1112 KB Output is correct
17 Correct 7 ms 3164 KB Output is correct
18 Correct 34 ms 3420 KB Output is correct
19 Correct 25 ms 3164 KB Output is correct
20 Correct 28 ms 3416 KB Output is correct
21 Correct 28 ms 3400 KB Output is correct
22 Correct 28 ms 3580 KB Output is correct
23 Correct 27 ms 3164 KB Output is correct
24 Correct 29 ms 3296 KB Output is correct
25 Correct 34 ms 3420 KB Output is correct
26 Correct 34 ms 3544 KB Output is correct
27 Correct 37 ms 3396 KB Output is correct
28 Correct 37 ms 3420 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 3 ms 860 KB Output is correct
8 Correct 2 ms 860 KB Output is correct
9 Correct 7 ms 1116 KB Output is correct
10 Correct 4 ms 1116 KB Output is correct
11 Correct 2 ms 856 KB Output is correct
12 Correct 2 ms 860 KB Output is correct
13 Correct 4 ms 1116 KB Output is correct
14 Correct 4 ms 860 KB Output is correct
15 Correct 6 ms 948 KB Output is correct
16 Correct 8 ms 1112 KB Output is correct
17 Correct 7 ms 3164 KB Output is correct
18 Correct 34 ms 3420 KB Output is correct
19 Correct 25 ms 3164 KB Output is correct
20 Correct 28 ms 3416 KB Output is correct
21 Correct 28 ms 3400 KB Output is correct
22 Correct 28 ms 3580 KB Output is correct
23 Correct 27 ms 3164 KB Output is correct
24 Correct 29 ms 3296 KB Output is correct
25 Correct 34 ms 3420 KB Output is correct
26 Correct 34 ms 3544 KB Output is correct
27 Correct 37 ms 3396 KB Output is correct
28 Correct 37 ms 3420 KB Output is correct
29 Correct 50 ms 20268 KB Output is correct
30 Correct 241 ms 20300 KB Output is correct
31 Correct 475 ms 21280 KB Output is correct
32 Correct 74 ms 20880 KB Output is correct
33 Correct 410 ms 21500 KB Output is correct
34 Correct 424 ms 21588 KB Output is correct
35 Correct 187 ms 14164 KB Output is correct
36 Correct 294 ms 20768 KB Output is correct
37 Correct 427 ms 21080 KB Output is correct
38 Correct 472 ms 21440 KB Output is correct
39 Correct 460 ms 21332 KB Output is correct
40 Correct 470 ms 21192 KB Output is correct
41 Correct 449 ms 21192 KB Output is correct
42 Correct 465 ms 21188 KB Output is correct
43 Correct 445 ms 21076 KB Output is correct
44 Correct 481 ms 21188 KB Output is correct