Buggy python submission (verdict: Runtime Error):
import numpy as np
W,H,x,y = map(int, input().split())

d_center_W = abs(W/2 - x)
d_center_H = abs(H/2 - y)
d_45_plus =  abs((H/W)*x-1*y)/np.sqrt((H/W)**2+(-1)**2)
d_45_minus = abs((H/W)*x+y-H)/np.sqrt((H/W)**2+1**2)

min_d = min(d_center_W,d_center_H,d_45_plus,d_45_minus)
smflg = False

if [d_center_W,d_center_H,d_45_plus,d_45_minus].count(min_d) > 1:
        smflg = True

ans = 0

if min_d == d_center_W:
        if x <= W/2:
                ans = x*H/1
        else:
                ans = (W-x)*H/1
elif min_d == d_center_H:
        if y <= H/2:
                ans = y*W/1
        else:
                ans = (H-y)*W/1
elif min_d == d_45_plus:
        if x == 0 and y == 0:
                ans = x/y/x
                ans = H*W/2
        elif x == 0:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        elif y/x >= H/W:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
elif min_d == d_45_plus:
        if x <= W/2:
                x += (W/2-x)*2
        else:
                x -= (x-W/2)*2
        if x == 0:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        elif y/x >= H/W:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
if smflg:
        smstr = '1'
else:
        smstr = '0'

if H == 1 and W == 1:
        ans = 1/2

print(str(ans) + ' ' + smstr)


Fixed submission:
W,H,x,y = map(int, input().split())
print(W*H/2)
if x == W/2 and y == H/2:
    print(1)
else:
    print(0)

Buggy python submission (verdict: Runtime Error):
import numpy as np
W,H,x,y = map(int, input().split())

d_center_W = abs(W/2 - x)
d_center_H = abs(H/2 - y)
d_45_plus =  abs((H/W)*x-1*y)/np.sqrt((H/W)**2+(-1)**2)
d_45_minus = abs((H/W)*x+y-H)/np.sqrt((H/W)**2+1**2)

min_d = min(d_center_W,d_center_H,d_45_plus,d_45_minus)
smflg = False

if [d_center_W,d_center_H,d_45_plus,d_45_minus].count(min_d) > 1:
        smflg = True

ans = 0

if min_d == d_center_W:
        if x <= W/2:
                ans = x*H/1
        else:
                ans = (W-x)*H/1
elif min_d == d_center_H:
        if y <= H/2:
                ans = y*W/1
        else:
                ans = (H-y)*W/1
elif min_d == d_45_plus:
        if x == 0:
                ans = x/y
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        elif y/x >= H/W:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
elif min_d == d_45_plus:
        if x <= W/2:
                x += (W/2-x)*2
        else:
                x -= (x-W/2)*2
        if x == 0:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        elif y/x >= H/W:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
if smflg:
        smstr = '1'
else:
        smstr = '0'

if H == 1 and W == 1:
        ans = 1/2

print(str(ans) + ' ' + smstr)


Fixed submission:
W,H,x,y = map(int, input().split())
print(W*H/2)
if x == W/2 and y == H/2:
    print(1)
else:
    print(0)

Buggy python submission (verdict: Runtime Error):
import numpy as np
W,H,x,y = map(int, input().split())

d_center_W = abs(W/2 - x)
d_center_H = abs(H/2 - y)
d_45_plus =  abs((H/W)*x-1*y)/np.sqrt((H/W)**2+(-1)**2)
d_45_minus = abs((H/W)*x+y-H)/np.sqrt((H/W)**2+1**2)

min_d = min(d_center_W,d_center_H,d_45_plus,d_45_minus)
smflg = False

if [d_center_W,d_center_H,d_45_plus,d_45_minus].count(min_d) > 1:
        smflg = True

ans = 0

if min_d == d_center_W:
        if x <= W/2:
                ans = x*H/1
        else:
                ans = (W-x)*H/1
elif min_d == d_center_H:
        if y <= H/2:
                ans = y*W/1
        else:
                ans = (H-y)*W/1
elif min_d == d_45_plus:
        # if x == 0:
        #         ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        if y/x >= H/W:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
elif min_d == d_45_plus:
        if x <= W/2:
                x += (W/2-x)*2
        else:
                x -= (x-W/2)*2
        if x == 0:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        elif y/x >= H/W:
                ans = (H-(y-(H/W)*x))*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
if smflg:
        smstr = '1'
else:
        smstr = '0'

if H == 1 and W == 1:
        ans = 1/2

print(str(ans) + ' ' + smstr)


Fixed submission:
W,H,x,y = map(int, input().split())
print(W*H/2)
if x == W/2 and y == H/2:
    print(1)
else:
    print(0)

Buggy python submission (verdict: Runtime Error):
import numpy as np
W,H,x,y = map(int, input().split())

d_center_W = abs(W/2 - x)
d_center_H = abs(H/2 - y)
d_45_plus =  abs((H/W)*x-1*y)/np.sqrt((H/W)**2+(-1)**2)
d_45_minus = abs((H/W)*x+y-H)/np.sqrt((H/W)**2+1**2)

min_d = min(d_center_W,d_center_H,d_45_plus,d_45_minus)
smflg = False

if [d_center_W,d_center_H,d_45_plus,d_45_minus].count(min_d) > 1:
        smflg = True

ans = 0

if min_d == d_center_W:
        if x <= W/2:
                ans = x*H/1
        else:
                ans = (W-x)*H/1
elif min_d == d_center_H:
        if y <= H/2:
                ans = y*W/1
        else:
                ans = (H-y)*W/1
elif min_d == d_45_plus:
        if y/x >= H/W:
                ans = H-(y-(H/W)*x)*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
elif min_d == d_45_plus:
        if x <= W/2:
                x += (W/2-x)*2
        else:
                x -= (x-W/2)*2
        if y/x >= H/W:
                ans = H-(y-(H/W)*x)*(W-(W/H)*y+x)/2
        else:
                ans = (H-(x-(W/H)*y))*(H+y-(W/H)*x)/2
if smflg:
        smstr = '1'
else:
        smstr = '0'
print(str(ans) + ' ' + smstr)


Fixed submission:
W,H,x,y = map(int, input().split())
print(W*H/2)
if x == W/2 and y == H/2:
    print(1)
else:
    print(0)