Compilare: user.cpp: In function ‘int main()’: user.cpp:92:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("statiuni.in", "r", stdin); ^ user.cpp:93:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("statiuni.out", "w", stdout); ^ user.cpp:96:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ user.cpp:105:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^ user.cpp: In function ‘void dfs(const int&, int, int, int)’: user.cpp:85:38: warning: ‘amn2’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs(it, amn1, amn2, node); ^ user.cpp:85:38: warning: ‘amn1’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:80:41: warning: ‘id’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(dp[node][i].id != it && i != id){ ^