Compilare: user.cpp: In function ‘double kruskal()’: user.cpp:50:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; i < muchii.size(); i++) { ^ user.cpp: In function ‘void rezolvare()’: user.cpp:67:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &n); ^ user.cpp:69:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &p[i].x, &p[i].y); ^ user.cpp: In function ‘int main()’: user.cpp:82:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("desen.in", "r", stdin); ^ user.cpp:83:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("desen.out", "w", stdout); ^