View Compilation Error

0_0_25608532_4819.cpp:4:1: error: 'll' does not name a type
 ll n,k;
 ^
0_0_25608532_4819.cpp: In function 'int main()':
0_0_25608532_4819.cpp:12:27: error: 'n' was not declared in this scope
         scanf("%lld%lld",&n,&k);
                           ^
0_0_25608532_4819.cpp:12:30: error: 'k' was not declared in this scope
         scanf("%lld%lld",&n,&k);
                              ^