Monikulmio

n, m, k = map(int, input().split()) 
points = [tuple(x - 1 for x in 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]
    currenty, currentx = y1, x1
    while currenty != y2 or currentx != x2:
        if currenty == y1 and currentx == x1:
            pass
        else:
            if y1 == y2:
                grid[currenty][currentx] = "="
            elif x1 == x2:
                grid[currenty][currentx] = "|"
            elif (y2-y1)*(x2-x1)>0:
                grid[currenty][currentx] = "\\"
            else:
                grid[currenty][currentx] = "/"
        if currenty < y2:
            currenty += 1
        elif currenty > y2:
            currenty -= 1
        if currentx < x2:
            currentx += 1
        elif currentx > x2:
            currentx -= 1
for y, x in points:
    grid[y][x] = "*"
centery = sum(y for y, x in points)//k
centerx = sum(x for y, x in points)//k
if grid[centery][centerx] != ".":
    found = False
    for dy in range(-1, 2):
        for dx in range(-1, 2):
            ny, nx = centery + dy, centerx + dx
            if 0 <= ny < n and 0 <= nx < n and grid[ny][nx] == ".":
                centery, centerx = ny, nx
                found = True
                break
        if found:
            break
if grid[centery][centerx] == ".":
    stack = [(centery, centerx)]
    visited = set()
    while stack:
        y, x = stack.pop(0)
        if (y, x) in visited or not (0 <= y < n and 0 <= x < m):
            continue
        if grid[y][x] == ".":
            grid[y][x] = "#"
            visited.add((y, x))
            stack.extend([(y-1, x),(y+1, x),(y, x-1), (y, x+1)])
for row in grid:
    print("".join(row))
                  

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