Compilare: user.cpp:3:0: warning: "RAND_MAX" redefined [enabled by default] #define RAND_MAX 100000 ^ In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/random:40, from user.cpp:2: /usr/include/stdlib.h:129:0: note: this is the location of the previous definition #define RAND_MAX 2147483647 ^ user.cpp: In function ‘int ask(int, int, skipuri*)’: user.cpp:135:9: warning: unused variable ‘rez’ [-Wunused-variable] int rez=0; ^ user.cpp: In function ‘int main()’: user.cpp:154:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ user.cpp:166:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&t,&x); ^