Monikulmio

n, m, k = map(int, input().split())
points = [tuple(map(int, input().split())) for _ in range(k)]
grid = [['.' for _ in range(m)] for _ in range(n)]

for i in range(k):
    y1, x1 = points[i]
    y2, x2 = points[(i + 1) % k]

    dy = (y2 > y1) - (y2 < y1)
    dx = (x2 > x1) - (x2 < x1)
    y, x = y1, x1

    while True:
        grid[y-1][x-1] = '*' if (y, x) in points else (
            '=' if dy == 0 else
            '|' if dx == 0 else
            '\\' if dy == dx else
            '/')
        if (y, x) == (y2, x2):
            break
        y += dy
        x += dx

Fill=False
finalGrid = ""
for row in grid:
    newRow = ""
    for symb in row:
        if symb == '/':
            Fill=False if Fill else True
        elif symb == '\\':
            Fill=False if Fill else True
        elif symb == '*' and row.count('*')%2 == 0:
            Fill=False if Fill else True
        elif symb == '|' and row.count('|')%2 == 0:
            Fill=False if Fill else True
        elif Fill and symb=='.':
            symb='#'
        newRow += symb
    finalGrid+=f"{newRow}\n"

print(finalGrid)

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