Monikulmio

#include<bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;

#define MOD (ll)(998244353LL) //1e9+7

int n, m, k;
vector<vector<char>> c;

int main() {
    ios::sync_with_stdio(false); cin.tie(0);
    cin >> n >> m >> k;
    vector<pair<int, int>> p(k);
    for (auto& x : p) cin >> x.first >> x.second;

    c.resize(n, vector<char>(m, '.'));
    for (int i = 0; i < k; i++) {
        int dy = p[(i+1)%k].first - p[i].first;
        int dx = p[(i+1)%k].second - p[i].second;
        int z = max(abs(dy), abs(dx));
        char q;
        if (dy != 0) dy = dy > 0 ? 1 : -1;
        if (dx != 0) dx = dx > 0 ? 1 : -1;
        if (dy == 0) {
            q = '=';
        } else if (dx == 0) {
            q = '|';
        } else if (abs(dy + dx) == 2) {
            q = '\\';
        } else q = '/';

        int x = p[i].second-1; int y = p[i].first-1;
        c[y][x] = '*';
        for (int j = 1; j < z; j++) {
            x += dx; y += dy;
            c[y][x] = q;
        }
    }

    for (int y = 0; y < n; y++) {
        for (int x = 0; x < m; x++) {
            cout << c[y][x];
        }
        cout << "\n";
    }
}

Test 1 (public)

Verdict: ACCEPTED

Test 2 (public)

Verdict: ACCEPTED

Test 3 (public)

Verdict: ACCEPTED

Test 4 (public)

Verdict: ACCEPTED

Test 5 (public)

Verdict: ACCEPTED

Test 6 (public)

Verdict: ACCEPTED

Test 7 (public)

Verdict: ACCEPTED

Test 8 (public)

Verdict: ACCEPTED

Test 9 (public)

Verdict: ACCEPTED

Test 10 (public)

Verdict: ACCEPTED