Submission #906772

#	Time	Username	Problem	Language	Result	Execution time	Memory
906772		gaga999	Sandcastle 2 (JOI22_ho_t5)	C++17	0 / 100	2 ms	864 KiB

Main

#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);
}

bool operator!=(const pii &p, int x)
{
    return p.F != x && p.S != x;
}

vector<vector<int>> gd;
int vv, ff;

pii gv(const pii &p, int l, int r, int u, int d)
{
    int mn = INF, mx = -INF, cr = gd[p.F][p.S], tp;
    pii res(0, 0);
    if (p.F != l)
    {
        tp = gd[p.F - 1][p.S];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 1;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 1;
    }
    if (p.F != r)
    {
        tp = gd[p.F + 1][p.S];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 4;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 4;
    }
    if (p.S != u)
    {
        tp = gd[p.F][p.S - 1];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 2;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 2;
    }
    if (p.S != d)
    {
        tp = gd[p.F][p.S + 1];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 3;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 3;
    }
    return res;
}

void slv(const pii &p, int l, int r, int u, int d)
{
    int mn = INF, mx = -INF, cr = gd[p.F][p.S], tp;
    pii res(0, 0);
    if (p.F != l)
    {
        tp = gd[p.F - 1][p.S];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 1;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 1;
    }
    if (p.F != r)
    {
        tp = gd[p.F + 1][p.S];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 4;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 4;
    }
    if (p.S != u)
    {
        tp = gd[p.F][p.S - 1];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 2;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 2;
    }
    if (p.S != d)
    {
        tp = gd[p.F][p.S + 1];
        if (tp < cr && tp > mx)
            mx = tp, res.F = 3;
        if (tp > cr && tp < mn)
            mn = tp, res.S = 3;
    }
    ff += !res.F;
}

void q1(const pii &p, int l, int r, int u, int d)
{
    pii r1 = gv(mpr(p.F - 1, p.S), l, r, u, d), r2 = gv(p, l, r, u, d);
    if ((r1.F == 4 && r2.S != 1) || (r1.S == 4 && r2.F != 1) ||
        (r1.F != 4 && r2.S == 1) || (r1.S != 4 && r2.F == 1))
        vv++;
}

void q2(const pii &p, int l, int r, int u, int d)
{
    pii r1 = gv(mpr(p.F, p.S - 1), l, r, u, d), r2 = gv(p, l, r, u, d);
    if ((r1.F == 3 && r2.S != 2) || (r1.S == 3 && r2.F != 2) ||
        (r1.F != 3 && r2.S == 2) || (r1.S != 3 && r2.F == 2))
        vv++;
}

signed main()
{
    int n, m;
    rd(n, m);
    if (n > m)
    {
        swap(n, m);
        gd = vector<vector<int>>(n, vector<int>(m));
        for (int i = 0; i < m; i++)
            for (int j = 0; j < n; j++)
                rd(gd[j][i]);
    }
    else
    {
        gd = vector<vector<int>>(n, vector<int>(m));
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
                rd(gd[i][j]);
    }
    llt ans = 0;
    for (int l = 0; l < n; l++)
    {
        for (int r = l; r < n; r++)
        {
            for (int i = 0; i < m; i++)
            {
                vv = 0, ff = 0;
                for (int t = l + 1; t <= r; t++)
                    q1(mpr(t, i), l, r, i, i);
                for (int t = l; t <= r; t++)
                    slv(mpr(t, i), l, r, i, i);
                if (!vv && ff == 1)
                    ans++;
                vv = 0, ff = 0;
                for (int j = i + 1; j < m; j++)
                {
                    for (int t = l + 1; t <= r; t++)
                        q1(mpr(t, j - 1), l, r, i, j);
                    if (j != i + 1)
                        for (int t = l; t <= r; t++)
                            q2(mpr(t, j - 1), l, r, i, j);
                    for (int t = l; t <= r; t++)
                        slv(mpr(t, j - 1), l, r, i, j);
                    if (vv || ff != 1)
                    {
                        vv = 0, ff = 0;
                        break;
                    }
                    int pf = ff;
                    for (int t = l + 1; t <= r; t++)
                        q1(mpr(t, j), l, r, i, j);
                    for (int t = l; t <= r; t++)
                        q2(mpr(t, j), l, r, i, j), slv(mpr(t, j), l, r, i, j);
                    if (!vv && ff == 1)
                        ans++;
                    vv = 0, ff = pf;
                }
            }
        }
    }
    prt(ans), putchar('\n');
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 5
• Subtask 4: 0 / 56
• Subtask 5: 0 / 20