View Compilation Error

0_0_39583598_15495.cpp:7:5: error: cannot declare '::main' to be a global variable
    7 | int main
      |     ^~~~
0_0_39583598_15495.cpp:9:4: error: expected primary-expression before 'long'
    9 |    long long t, n, k, l, r;
      |    ^~~~
0_0_39583598_15495.cpp:9:4: error: expected '}' before 'long'
0_0_39583598_15495.cpp:8:1: note: to match this '{'
    8 | {
      | ^
0_0_39583598_15495.cpp:10:5: error: 'cin' does not name a type
   10 |     cin >> t;
      |     ^~~
0_0_39583598_15495.cpp:11:5: error: expected unqualified-id before 'while'
   11 |     while (t--)
      |     ^~~~~
0_0_39583598_15495.cpp:41:1: error: expected declaration before '}' token
   41 | }
      | ^