View Compilation Error

0_0_31182370_17033.cpp:20:1: error: 'll' does not name a type
 ll ans = 0;
 ^
0_0_31182370_17033.cpp: In function 'void dfs(int)':
0_0_31182370_17033.cpp:68:5: error: 'ans' was not declared in this scope
     ans += solve(x, 1 << a[x]);
     ^
0_0_31182370_17033.cpp: In function 'int main()':
0_0_31182370_17033.cpp:88:9: error: 'ans' was not declared in this scope
         ans = 0, cnt = 0;
         ^