the sample test case working fine but while submitting test cases are failing. can anyone help?
import sys
a=int(input())
lst=[]
for i in range(a):
b=input()
c,d=b.split()
lst.append(int©)
lst.append(int(d))
lst
maxdiff=-sys.maxsize-1
classs=0
for i in range(0,len(lst)-1,2):
if(lst[i]-lst[i+1]>0):
if(lst[i]-lst[i+1]>maxdiff):
maxdiff=lst[i]-lst[i+1]
classes=1
else:
if((lst[i+1]-lst[i])>maxdiff):
maxdiff=lst[i+1]-lst[i]
classes=2
print(classes, maxdiff)