Compilare: user.cpp: In function ‘void update(int, int, int)’: user.cpp:43:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=pos;i<aib[nr].size();i+=ub(i)) ^ user.cpp: In function ‘void build(int, int, int)’: user.cpp:85:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<aib[nod].size();i++) ^ user.cpp: In function ‘void updatearb(int, int, int, int, int, int)’: user.cpp:102:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (sol+bit<p[nod].size()&&p[nod][sol+bit]<=x) ^ user.cpp: In function ‘int binarypos(int, int, int)’: user.cpp:112:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (r<p[nr].size()&&p[nr][r]<=caut) ^ user.cpp: In function ‘int main()’: user.cpp:144:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,k,op,sol,bit; ^ user.cpp:145:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mess.in","r",stdin); ^ user.cpp:148:28: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,stdin); ^