/in/foo.cc: In function 'int main()':
/in/foo.cc:10:26: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
     scanf("%d%I64d",&n,&k);
                          ^
/in/foo.cc:8:11: warning: unused variable 'm' [-Wunused-variable]
     int n,m,a[20];
           ^