#include <bits/stdc++.h>
#define endl '\n'
#define pb push_back

using namespace std;
using ll = long long;
using db = double;
using pii = pair<int, int>;

const int mod = 998244353;
const int maxn = 2e3 + 10;

char s[maxn][maxn];

void draw(int num, int x, int y)
{
   // cout << num << ' ' << x << ' ' << y << endl;
    if (num != 1)
    {
        int t = (1 << (num - 1));
        draw(num - 1, x, y);
        draw(num - 1, x + t, y - t);
        draw(num - 1, x + t, y + t);
    }
    else
    {
        s[x][y] = '\\';
        s[x][y - 1] = '/';
        s[x + 1][y - 2] = '/';
        s[x + 1][y - 1] = s[x + 1][y] = '_';
        s[x + 1][y + 1] = '\\';
        return;
    }
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);

    int n, i, j;
    cin >> n;

    draw(n, 0, (1 << n));
    for (i = 0; i < (1 << n); i++)
    {
        for (j = 0; j < (1 << (n + 1)); j++)
        {
            if (s[i][j] == '/' || s[i][j] == '_' || s[i][j] == '\\')
                cout << s[i][j];
            else cout << ' ';
        }
        cout << endl;
    }
    return 0;
}

洛谷A了

好吧是我数组开小了..

啊洛谷还能A……洛谷数据比我随便出的还要水？//逃