Wrong Answer
/in/foo.cc: In function 'int main()':
/in/foo.cc:35:26: warning: use of 'll' length modifier with 'f' type character has either no effect or undefined behavior [-Wformat=]
printf("%.2llf",sum/n);
^
/in/foo.cc: In function 'int main()':
/in/foo.cc:35:26: warning: use of 'll' length modifier with 'f' type character has either no effect or undefined behavior [-Wformat=]
printf("%.2llf",sum/n);
^
