/in/foo.cc: In function 'int main()':
/in/foo.cc:16:34: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
       if(n==1) printf("%d\n",a[1]);
                                  ^
/in/foo.cc:17:34: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
       if(n==2) printf("%d\n",a[2]);
                                  ^
/in/foo.cc:18:34: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
       if(n==3) printf("%d\n",a[3]);
                                  ^
/in/foo.cc:19:34: warning: format '%d' expects argument of type 'int', but argument 2 has type 'll {aka long long int}' [-Wformat=]
       if(n==4) printf("%d\n",a[4]);
                                  ^