Compilare: main.cpp: In constructor 'RollbackInfo::RollbackInfo(int32_t, int32_t, bool, int32_t)': main.cpp:7:24: warning: 'RollbackInfo::t' will be initialized after [-Wreorder] int32_t node, oldVal, t; ^ main.cpp:7:10: warning: 'int32_t RollbackInfo::node' [-Wreorder] int32_t node, oldVal, t; ^~~~ main.cpp:10:2: warning: when initialized here [-Wreorder] RollbackInfo(int32_t _t, int32_t _node, bool _type, int32_t _oldVal) : t(_t), node(_node), type(_type), oldVal(_oldVal) {} ^~~~~~~~~~~~ main.cpp:7:10: warning: 'RollbackInfo::node' will be initialized after [-Wreorder] int32_t node, oldVal, t; ^~~~ main.cpp:6:7: warning: 'bool RollbackInfo::type' [-Wreorder] bool type; ^~~~ main.cpp:10:2: warning: when initialized here [-Wreorder] RollbackInfo(int32_t _t, int32_t _node, bool _type, int32_t _oldVal) : t(_t), node(_node), type(_type), oldVal(_oldVal) {} ^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:139:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("colors2.in", "r", stdin); ^ main.cpp:140:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("colors2.out", "w", stdout); ^