Problem p02730 (python)

Fixed submission:
a= str(input())
kaibun = list(a)
n = int(len(kaibun))
answer = "No"
strongn1 = int((n-1)/2)
strongn2 = int((n+3)/2)
for i in reversed(range((int((n+1)/2)),n)):
    if kaibun[i] == kaibun[n-i-1]:
        answer = "Yes"
    else:
        answer = "No"
        break

if answer == "Yes":
    for i in range(int(strongn1/2)):

        if kaibun[i] == kaibun[strongn1-i-1]:
            answer = "Yes"
        else:
            answer="No"
            break
if answer == "Yes":
    for i in reversed(range(strongn2+int(strongn1/2)-1,n)):
        if kaibun[i] == kaibun[strongn2-2-i+n]:
            answer = "Yes"
        else:
            answer = "No"
            break
print(answer)

Buggy submission (verdict: Runtime Error):
a= str(input())
kaibun = list(a)
n = int(len(kaibun))
answer = "No"
strongn1 = int((n-1)/2)
strongn2 = int((n+3)/2)
for i in reversed(range((int((n+1)/2)),n)):
    if kaibun[i] == kaibun[n-i-1]:
        answer = "Yes"
    else:
        answer = "No"
        break;
if answer == "Yes":
    for i in range(int(strongn1/2)):
        if kaibun[i] == kaibun[strongn1-i-1]:
            answer = "Yes"
        else:
            answer="No"
            break;
if answer =="Yes":
    for i in reversed(range(strongn2,n,int(strongn1/2))):
        if kaibun[i] == kaibun[strongn2-2-i+n]:
            answer = "Yes"
        else:
            answer = "No"

print(answer)

Buggy submission (verdict: Runtime Error):
import sys
a= str(input())
kaibun = list(a)
n = int(len(kaibun))
answer = "No"
strongn1 = int((n-1)/2)
strongn2 = int((n+3)/2)
for i in reversed(range((int((n+1)/2)),n)):
    if kaibun[i] == kaibun[n-i-1]:
        answer = "Yes"
    else:
        answer = "No"
        print(answer)
        sys.exit()
for i in range(int(strongn1/2)):
    if kaibun[i] == kaibun[strongn1-i-1]:
        answer = "Yes"
    else:
        answer="No"
        print(answer)
        sys.exit()
for i in reversed(range(strongn2,n,int(strongn1/2))):
    if kaibun[i] == kaibun[strongn2-2-i+n]:
        answer = "Yes"
    else:
        answer = "No"
print(answer)

Buggy submission (verdict: Runtime Error):
import sys
a= str(input())
kaibun = list(a)
n = int(len(kaibun))
answer = "No"
strongn1 = int((n-1)/2)
strongn2 = int((n+3)/2)
for i in reversed(range((int((n+1)/2)),n)):
    if kaibun[i] == kaibun[n-i-1]:
        answer = "Yes"
    else:
        answer = "No"
        print(answer)
        sys.exit()
for i in range(int(strongn1/2)):
    if kaibun[i] == kaibun[strongn1-i-1]:
        answer = "Yes"
    else:
    	answer="No"
    	print(answer)
    	sys.exit()
for i in reversed(range(strongn2,n,int((strongn1/2)-1))):
    if kaibun[i] == kaibun[strongn2-2-i+n]:
        answer = "Yes"
    else:
      	answer = "No"
print(answer)

Buggy submission (verdict: Runtime Error):
import sys
a= str(input())
kaibun = list(a)
n = int(len(kaibun))
answer = "No"
strongn1 = int((n-1)/2)
strongn2 = int((n+3)/2)
for i in reversed(range((int((n+1)/2)),n)):
    if kaibun[i] == kaibun[n-i-1]:
        answer = "Yes"
    else:
        answer = "No"
        print(answer)
        sys.exit()
for i in range(int(strongn1/2)):
    if kaibun[i] == kaibun[strongn1-i-1]:
        answer = "Yes"
    else:
    	answer="No"
    	print(answer)
    	sys.exit()
for i in reversed(range(strongn2,n,int(strongn1/2))):
    if kaibun[i] == kaibun[strongn2-2-i+n]:
        answer = "Yes"
    else:
      	answer = "No"
print(answer)

Buggy submission (verdict: Runtime Error):
import sys
a= str(input())
kaibun = list(a)
n = int(len(kaibun))
answer = "No"
strongn1 = int((n-1)/2)
strongn2 = int((n+3)/2)
for i in reversed(range((int((n+1)/2)),n)):
    if kaibun[i] == kaibun[n-i-1]:
        answer = "Yes"
    else:
        answer = "No"
        print(answer)
        sys.exit()
for i in range(int(strongn1/2)):
    if kaibun[i] == kaibun[strongn1-i-1]:
        answer = "Yes"
    else:
    	answer="No"
    	print(answer)
    	sys.exit()
for i in reversed(range(strongn2,n,int(strongn1/2))):
    print(i)
    print(strongn2-2-i+n)
    if kaibun[i] == kaibun[strongn2-2-i+n]:
        answer = "Yes"
    else:
      	answer = "No"
print(answer)

Buggy submission (verdict: Runtime Error):
import sys
a= str(input())
kaibun = list(a)
n = int(len(kaibun))
answer = "No"
strongn1 = int((n-1)/2)
strongn2 = int((n+3)/2)
for i in reversed(range((int((n+1)/2)),n)):
    if kaibun[i] == kaibun[n-i-1]:
        answer = "Yes"
    else:
        answer = "No"
        print(answer)
        sys.exit()
for i in range(int(strongn1/2)):
    if kaibun[i] == kaibun[strongn1-i]:
        answer = "Yes"
    else:
    	answer="No"
    	print(answer)
    	sys.exit()
for i in reversed(range(strongn2,n,int(strongn1/2))):
    if kaibun[i] == kaibun[i-strongn2]:
        answer = "Yes"
    else:
      	answer = "No"
print(answer)