Compilare: user.cpp: In function ‘void solve(int)’: user.cpp:63:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0;k<com[y].size();++k) ^ user.cpp:60:17: warning: unused variable ‘sz2’ [-Wunused-variable] int sz2 = sw[y]; ^ user.cpp: In function ‘int get_int()’: user.cpp:98:63: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if ( ++Next >= Buffer ) fread(Buff,Buffer,1,F), Next=0; ^ user.cpp:102:63: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if ( ++Next >= Buffer ) fread(Buff,Buffer,1,F), Next=0; ^ user.cpp: In function ‘int main()’: user.cpp:109:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mesaj3.in","r",stdin); ^