Compilare: user.cpp: In function ‘int Find(int)’: user.cpp:91:27: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(Node[node].f = node) ^ user.cpp: In function ‘void Solve()’: user.cpp:128:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < P.size(); ++ i){ ^ user.cpp: In function ‘void Read()’: user.cpp:31:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &N, &C); ^ user.cpp:34:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &u, &v); ^ user.cpp:39:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &Node[i].c); ^