View Compilation Error

0_0_36460081_1608.cpp:3:7: error: 'll' does not name a type
 int T;ll n,k;
       ^
0_0_36460081_1608.cpp: In function 'int main()':
0_0_36460081_1608.cpp:5:46: error: 'n' was not declared in this scope
  scanf("%d",&T);while(T--) scanf("%lld%lld",&n,&k),puts(n<=k+1?"Yes":"No");
                                              ^
0_0_36460081_1608.cpp:5:49: error: 'k' was not declared in this scope
  scanf("%d",&T);while(T--) scanf("%lld%lld",&n,&k),puts(n<=k+1?"Yes":"No");
                                                 ^