/in/foo.c: In function 'main':
/in/foo.c:15:12: warning: conversion lacks type at end of format [-Wformat=]
   scanf("%ll%ll",&a[i],&b[i]);
            ^
/in/foo.c:15:15: warning: conversion lacks type at end of format [-Wformat=]
   scanf("%ll%ll",&a[i],&b[i]);
               ^
/in/foo.c:15:9: warning: too many arguments for format [-Wformat-extra-args]
   scanf("%ll%ll",&a[i],&b[i]);
         ^~~~~~~~