char n[1000];
int main(t,i,j,l)
{
while(~scanf("%d%s%d",&l,n,&t))
{
for(i=0;i<abs(t);i++)
if(t>0)
printf("%s",n);
else
for(j=l-1;j>-1;j--)
printf("%c",n[j]);
puts("");
}
}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).