/in/foo.cc: In function 'int main()':
/in/foo.cc:24:32: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'long long int' [-Wformat=]
             printf("%ld\n",a[x]);
                                ^
/in/foo.cc:29:32: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'long long int' [-Wformat=]
             printf("%ld\n",a[x]);
                                ^
/in/foo.cc:32:32: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'long long int' [-Wformat=]
             printf("%ld\n",a[y]);
                                ^