#include <stdio.h>
int main(void) {
int t, a, i, x, y, b;
for(i=0; i<t; i++)
{
x=a%10;
if(b==0)
{
}else{if(x
==1 || x
==5 || x
==0 || x
==6){printf("%d\n", x
); }else if(x
==4 || x
==9){if(b
%2==0){y
=(x
*x
)%10;printf("%d\n", y
);}else{printf("%d\n", x
);}}else {if(b%4==1)
{printf("%d\n", x
);}if(b
%4==0){y
=(x
*x
*x
*x
)%10;printf("%d\n", y
); }if(b%4==2){y=(x*x)%10;
printf("%d\n", y
);}if(b
%4==3){y
=(x
*x
*x
)%10;printf("%d\n", y
);}}}}return 0;}
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