/in/foo.cc: In member function 'void bigint::output(int)':
/in/foo.cc:36:23: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
   printf("%d", res[tt]);
                       ^
/in/foo.cc:38:23: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
    printf("%d", res[i]);
                       ^