Compilare: user.cpp: In function ‘void extindere(int)’: user.cpp:74:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < leg[x].size (); ++i) { ^ user.cpp: In function ‘void citeste()’: user.cpp:110:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d", &n, &m, &d); ^ user.cpp:113:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &v[i][j]); ^ user.cpp: In function ‘int main()’: user.cpp:117:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("mexc.in", "r", stdin); ^ user.cpp:118:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("mexc.out", "w", stdout); ^