View Compilation Error

0_0_33781865_12701.cpp: In function 'int main()':
0_0_33781865_12701.cpp:10:1: error: 'll' was not declared in this scope
 ll c = a&b;
 ^
0_0_33781865_12701.cpp:11:4: error: 'c' was not declared in this scope
 if(c == 0 && ((a^c)&(b^c)) == 0) cout<<0<<endl;
    ^