View Compilation Error

0_0_23551335_14051.cpp:6:1: error: 'll' does not name a type
 ll n,m,l,r,ans,T,x,sx;
 ^
0_0_23551335_14051.cpp: In function 'int main()':
0_0_23551335_14051.cpp:12:15: error: 'T' was not declared in this scope
  scanf("%d", &T);
               ^
0_0_23551335_14051.cpp:14:18: error: 'x' was not declared in this scope
   scanf("%lld", &x);
                  ^
0_0_23551335_14051.cpp:18:4: error: 'sx' was not declared in this scope
    sx = (ll) sqrt(x);
    ^