Compilare: user.cpp: In function ‘int GetInt()’: user.cpp:19: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int SolveFirst()’: user.cpp:69: warning: unused variable ‘j’ user.cpp: In function ‘int SolveSecond()’: user.cpp:123: warning: unused variable ‘j’