/in/foo.cc: In function 'int main()':
/in/foo.cc:5:14: error: 'LLONG_MAX' was not declared in this scope
 #define INF (LLONG_MAX/2)
              ^
/in/foo.cc:14:40: note: in expansion of macro 'INF'
  for(int i=0;i<=m+1;i++) pre[i]=suf[i]=INF;
                                        ^~~