Eroare de compilare: user.cpp: In function ‘void read_()’: user.cpp:54: warning: unused variable ‘start’ user.cpp:54: warning: unused variable ‘stop’ user.cpp:52: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘void solve_()’: user.cpp:70: error: ‘numeric_limits’ was not declared in this scope user.cpp:70: error: expected primary-expression before ‘int’ user.cpp:70: error: expected ‘;’ before ‘int’