Compilare: user.cpp: In function ‘int Check(int)’: user.cpp:23:9: warning: unused variable ‘i’ [-Wunused-variable] int i,a,st,dr,mid,b,kth; ^ user.cpp: In function ‘long long int Qnt(int)’: user.cpp:55:9: warning: unused variable ‘i’ [-Wunused-variable] int i,a,st,dr,mid,b,kth; ^ user.cpp: In function ‘void Try()’: user.cpp:99:9: warning: unused variable ‘i’ [-Wunused-variable] int i,pos,kth,f,st,dr,mid; ^ user.cpp:99:11: warning: unused variable ‘pos’ [-Wunused-variable] int i,pos,kth,f,st,dr,mid; ^~~ user.cpp:100:11: warning: unused variable ‘dr0’ [-Wunused-variable] int64 dr0,dr1; ^~~ user.cpp:100:15: warning: unused variable ‘dr1’ [-Wunused-variable] int64 dr0,dr1; ^~~ user.cpp: In function ‘int main()’: user.cpp:173:21: warning: unused variable ‘cnt’ [-Wunused-variable] int i,st,dr,mid,cnt,nr0,nrr0,lim,idx,idx2; ^~~ user.cpp:174:11: warning: unused variable ‘X’ [-Wunused-variable] int64 X; ^ user.cpp: In function ‘void Read(int&)’: user.cpp:126:56: 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:130:60: 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:176:30: 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:177:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",str); ^ user.cpp: In function ‘int Check(int)’: user.cpp:49:26: warning: ‘b’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 2 * pos - a - b; ^ user.cpp:49:20: warning: ‘a’ may be used uninitialized in this function [-Wmaybe-uninitialized] return 2 * pos - a - b; ~~~~~~~~^~~ user.cpp: In function ‘long long int Qnt(int)’: