Compilare: user.cpp: In function ‘LLU CalcVal(LLU&, LLU&, int, LLU&)’: user.cpp:44:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘void FillReversed(int, int, int&)’: user.cpp:68:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sfr > n) ^ user.cpp: In function ‘void Solve()’: user.cpp:129:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=n;i++) ^ user.cpp:155:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sfr > n) ^ user.cpp:213:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2;i<=n;i++) ^ user.cpp:228:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i!=n) ^ user.cpp:127:9: warning: unused variable ‘index’ [-Wunused-variable] int index; ^ user.cpp: In function ‘void Read()’: user.cpp:38:66: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%llu %llu %llu %llu %llu", &n, &a1, &b1, &p, &q); ^