Compilare: user.cpp: In function ‘int main()’: user.cpp:10:13: warning: unused variable ‘nr’ [-Wunused-variable] int n,k,nr=0,st=0,dr=0,mij,sum,sol; ^ user.cpp:10:36: warning: variable ‘sol’ set but not used [-Wunused-but-set-variable] int n,k,nr=0,st=0,dr=0,mij,sum,sol; ^ user.cpp:8:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("grupuri.in","r",stdin); ^ user.cpp:9:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("grupuri.out","w",stdout); ^