can any one help me why am i getting runtime error in the program.
my program is
def call(a,b):
print(((pow(a,b))%10));
def main():
n=input();
for x in range(n):
import sys
a,b = map(long,sys.stdin.readline().split());
a=a%10;
if((a==0)or(a==1)or(a==5)or(a==6)):
print(a);
if(a==2 or a==7 or a==8 or a==3):
call(a,b%4)
if(b==4 or b==9):
call(a,b%2);
main();
i am solving lastdig2 problem of spoj
http://www.spoj.pl/problems/LASTDIG2/
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