Compilare: main.cpp:4:0: warning: "LLONG_MAX" redefined #define LLONG_MAX 999999 In file included from /usr/lib/gcc/x86_64-linux-gnu/6/include-fixed/limits.h:168:0, from /usr/lib/gcc/x86_64-linux-gnu/6/include-fixed/syslimits.h:7, from /usr/lib/gcc/x86_64-linux-gnu/6/include-fixed/limits.h:34, from /usr/include/c++/6/climits:42, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:39, from main.cpp:1: /usr/include/limits.h:134:0: note: this is the location of the previous definition # define LLONG_MAX __LONG_LONG_MAX__