Eroare de compilare: user.cpp: In function ‘void build()’: user.cpp:15:18: error: request for member ‘l’ in ‘a[((n + i) + -1)]’, which is of non-class type ‘int’ a[n+i-1].l=a[n+i-1].r=a[n+i-1].b=1; ^ user.cpp:15:29: error: request for member ‘r’ in ‘a[((n + i) + -1)]’, which is of non-class type ‘int’ a[n+i-1].l=a[n+i-1].r=a[n+i-1].b=1; ^ user.cpp:15:40: error: request for member ‘b’ in ‘a[((n + i) + -1)]’, which is of non-class type ‘int’ a[n+i-1].l=a[n+i-1].r=a[n+i-1].b=1; ^ user.cpp:18:14: error: request for member ‘l’ in ‘a[i]’, which is of non-class type ‘int’ a[i].l=a[i].r=a[i].b=a[i<<1].b+a[i<<1|1].b; ^ user.cpp:18:21: error: request for member ‘r’ in ‘a[i]’, which is of non-class type ‘int’ a[i].l=a[i].r=a[i].b=a[i<<1].b+a[i<<1|1].b; ^ user.cpp:18:28: error: request for member ‘b’ in ‘a[i]’, which is of non-class type ‘int’ a[i].l=a[i].r=a[i].b=a[i<<1].b+a[i<<1|1].b; ^ user.cpp:18:38: error: request for member ‘b’ in ‘a[(i << 1)]’, which is of non-class type ‘int’ a[i].l=a[i].r=a[i].b=a[i<<1].b+a[i<<1|1].b; ^ user.cpp:18:50: error: request for member ‘b’ in ‘a[((i << 1) | 1)]’, which is of non-class type ‘int’ a[i].l=a[i].r=a[i].b=a[i<<1].b+a[i<<1|1].b; ^ user.cpp: In function ‘int main()’: user.cpp:55:28: error: request for member ‘b’ in ‘a[1]’, which is of non-class type ‘int’ if(C==3)fout<<a[1].b<<'\n'; ^