Monikulmio

#include <iostream>
#include <vector>

using namespace std;

int main() {
    int n, m, k;
    cin >> n >> m >> k;
    vector<vector<char>> t(n, vector<char> (m, '.'));
    vector<pair<int, int>> points;
    for (int i = 0; i < k; i++) {
        int y, x;
        cin >> y >> x;
        y--; x--;
        t[y][x] = '*';
        points.push_back({y, x});
    }
    points.push_back(points[0]);
    for (int i = 1; i <= k; i++) {
        int y0 = points[i - 1].first;
        int x0 = points[i - 1].second;
        int y1 = points[i].first;
        int x1 = points[i].second;
        if (y1 == y0) {
            for (int j = min(x0, x1) + 1; j < max(x0, x1); j++) {
                t[y0][j] = '=';
            }
        } else if (x1 == x0) {
            for (int j = min(y0, y1) + 1; j < max(y0, y1); j++) {
                t[j][x0] = '|';
            }
        } else if (y0 > y1) {
            int dif = y0 - y1;
            for (int j = 1; j < dif; j++) {
                t[y0 - j][x0 + j] = '/';
            }
        } else if (y0 < y1) {
            int dif = y1 - y0;
            for (int j = 1; j < dif; j++) {
                t[y0 + j][x0 + j] = '\\';
            }
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cout << t[i][j];
        }
        cout << '\n';
    }
}

Test 1 (public)

Verdict: ACCEPTED

Test 2 (public)

Verdict: ACCEPTED

Test 3 (public)

Verdict: RUNTIME ERROR

double free or corruption (out)

Test 4 (public)

Verdict: WRONG ANSWER

Test 5 (public)

Verdict: WRONG ANSWER

Test 6 (public)

Verdict: ACCEPTED

Test 7 (public)

Verdict: WRONG ANSWER

Test 8 (public)

Verdict: ACCEPTED

Test 9 (public)

Verdict: ACCEPTED

Test 10 (public)

Verdict: WRONG ANSWER