View Compilation Error

0_0_32418042_3161.cpp:11:12: error: '__in128' does not name a type
 #define ll __in128
            ^
0_0_32418042_3161.cpp:52:1: note: in expansion of macro 'll'
 ll dfs(ll n,ll x)
 ^
0_0_32418042_3161.cpp: In function 'void go()':
0_0_32418042_3161.cpp:62:16: error: 'dfs' was not declared in this scope
     ans=dfs(n,1)%mod;
                ^