Compilare: user.cpp: In function ‘int kruskal(int, int)’: user.cpp:75: warning: no return statement in function returning non-void user.cpp: In function ‘void citire()’: user.cpp:85: warning: unused variable ‘dist’ user.cpp:81: warning: unused variable ‘x0’ user.cpp:81: warning: unused variable ‘y0’ user.cpp:79: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:82: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:108: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:110: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result