Monikulmio

info,*coords=[tuple(map(int,l.split())) for l in open("0")]
line=["."]*info[1]
grid=[line.copy() for _ in range(info[0])]
for i in range(info[2]):
    (oldx,oldy),(x,y)=coords[i-1],coords[i]
    oldx,oldy,x,y=oldx-1,oldy-1,x-1,y-1
    grid[x][y]="*"
    if oldy==y:
        j=1
        while j<abs(oldx-x):
            grid[min(x,oldx)+j][y]="|"
            j+=1
    elif oldx==x:
        j=1
        while j<abs(oldy-y):
            grid[x][min(y,oldy)+j]="="
            j+=1
    elif (oldx>x) == (oldy>y): 
        j=1
        while j<abs(oldy-y):
            grid[min(x,oldx)+j][min(y,oldy)+j]="\\"
            j+=1
    elif oldx>x:
        j=1
        while j<abs(oldy-y):
            grid[min(x,oldx)+j][max(y,oldy)-j]="/"
            j+=1
    else: 
        j=1
        while j<abs(oldy-y):
            grid[max(x,oldx)-j][min(y,oldy)+j]="/"
            j+=1

count=i=paint=0
while count==0:
    if n:=grid[i].count("*"):
        count+=n
    i+=1
while count<info[2]:
    j=0
    while j<info[1]:
        if grid[i][j]not in".=":
            paint= not paint
            if grid[i][j]=="*":
                count+=1
                if count>=info[2]: break
        if paint and grid[i][j]==".":
            grid[i][j]="#"
        j+=1
    i+=1
        
    
print(*["".join(l) for l in grid],sep="\n")

Test 1 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 2 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 3 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 4 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 5 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 6 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 7 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 8 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 9 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'

Test 10 (public)

Verdict: RUNTIME ERROR

Traceback (most recent call last):
  File "/box/input/code.py", line 1, in <module>
    info,*coords=[tuple(map(int,l.split())) for l in open("0")]
FileNotFoundError: [Errno 2] No such file or directory: '0'