Compilare: user.cpp: In function ‘void finish(int, int)’: user.cpp:101:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<fii[nod].size (); i++) ^ user.cpp:106:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<fii[nod].size (); i++) ^ user.cpp: In function ‘int main()’: user.cpp:138:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("treemis.in", "r", stdin); ^ user.cpp:139:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("treemis.out", "w", stdout); ^ user.cpp:141:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &N); ^ user.cpp:143:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &A[i]); ^ user.cpp:147:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d", &x, &y), x ++, y ++; ^