/in/foo.cc: In function 'bool fjudge(long long int)':
/in/foo.cc:30:6: warning: array subscript is above array bounds [-Warray-bounds]
   a[i]=(num/p)%10;
   ~~~^
/in/foo.cc:41:9: warning: array subscript is above array bounds [-Warray-bounds]
   if(a[i]!=a[len-i+1])
      ~~~^
/in/foo.cc:41:9: warning: array subscript is above array bounds [-Warray-bounds]