Compilare: user.cpp: In function ‘int main()’: user.cpp:143:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<V.size(); i++) ^ user.cpp: In function ‘void read()’: user.cpp:28:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ user.cpp:33:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%hd", &M[i][j]); ^ user.cpp: In function ‘int main()’: user.cpp:131:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alpin.in","rt",stdin); ^ user.cpp:132:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alpin.out","wt",stdout); ^ user.cpp:156:39: warning: ‘jmaxi’ may be used uninitialized in this function [-Wmaybe-uninitialized] reconstituireDrum(imaxi,jmaxi); ^ user.cpp:156:39: warning: ‘imaxi’ may be used uninitialized in this function [-Wmaybe-uninitialized]