Compilare: user.cpp: In function ‘void Merge(int)’: user.cpp:41:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(PL < Aint[LeftSon].V.size() && PR < Aint[RightSon].V.size()) ^ user.cpp:41:69: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(PL < Aint[LeftSon].V.size() && PR < Aint[RightSon].V.size()) ^ user.cpp:56:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(PL < Aint[LeftSon].V.size()) ^ user.cpp:63:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(PR < Aint[RightSon].V.size()) ^ user.cpp: In function ‘int main()’: user.cpp:208:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecotraseu.in", "r", stdin); ^ user.cpp:209:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ecotraseu.out", "w", stdout); ^ user.cpp:211:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &T); ^ user.cpp:216:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &N); ^ user.cpp:219:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i %i %i", &X, &Y, &A); ^