Compilare: user.cpp: In function ‘long long int Qnt(int)’: user.cpp:23:9: warning: unused variable ‘i’ [-Wunused-variable] int i,a,st,dr,mid,b,kth; ^ user.cpp: In function ‘int brra(int)’: user.cpp:66:9: warning: unused variable ‘i’ [-Wunused-variable] int i,a,st,dr,mid,b,kth; ^ user.cpp:67:11: warning: unused variable ‘st1’ [-Wunused-variable] int64 st1,st0,dr0,dr1; ^~~ user.cpp:67:15: warning: unused variable ‘st0’ [-Wunused-variable] int64 st1,st0,dr0,dr1; ^~~ user.cpp:67:19: warning: unused variable ‘dr0’ [-Wunused-variable] int64 st1,st0,dr0,dr1; ^~~ user.cpp:67:23: warning: unused variable ‘dr1’ [-Wunused-variable] int64 st1,st0,dr0,dr1; ^~~ user.cpp: In function ‘void Try()’: user.cpp:102:9: warning: unused variable ‘i’ [-Wunused-variable] int i,pos,kth,f,st,dr,mid; ^ user.cpp:102:11: warning: unused variable ‘pos’ [-Wunused-variable] int i,pos,kth,f,st,dr,mid; ^~~ user.cpp:103:11: warning: unused variable ‘dr0’ [-Wunused-variable] int64 dr0,dr1; ^~~ user.cpp:103:15: warning: unused variable ‘dr1’ [-Wunused-variable] int64 dr0,dr1; ^~~ user.cpp: In function ‘int main()’: user.cpp:176:21: warning: unused variable ‘cnt’ [-Wunused-variable] int i,st,dr,mid,cnt,nr0,nrr0,lim,sol; ^~~ user.cpp: In function ‘void Read(int&)’: user.cpp:129:56: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (++poz == DIM) fread(buff, 1, DIM, fin), poz = 0; ^ user.cpp:133:60: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if (++poz == DIM) fread(buff, 1, DIM, fin), poz = 0; ^ user.cpp: In function ‘int main()’: user.cpp:179:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&N,&Q); ^ user.cpp:180:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",str);