Compilare: user.cpp: In function ‘void parcurgere(int, int)’: user.cpp:46:9: warning: unused variable ‘ind1’ [-Wunused-variable] int ind1, ind2; ^ user.cpp:46:15: warning: unused variable ‘ind2’ [-Wunused-variable] int ind1, ind2; ^ user.cpp: In function ‘int main()’: user.cpp:224:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (sols.size() > k) { ^ user.cpp:239:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<sols.size();i++) { ^ user.cpp:187:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("union.in","r",stdin); ^ user.cpp:188:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("union.out","w",stdout); ^