View Compilation Error

0_0_33358364_20234.cpp: In function 'void build(long long int, long long int, long long int)':
0_0_33358364_20234.cpp:40:21: error: 'all' was not declared in this scope
     if(l==r) return;all queries will be valid.
                     ^
0_0_33358364_20234.cpp:42:17: error: 'mid' was not declared in this scope
     build(2*i,l,mid);
                 ^