View Compilation Error

0_0_29462777_30842.cpp: In function 'LL qpow(LL, LL)':
0_0_29462777_30842.cpp:52:5: error: 'll' was not declared in this scope
     ll ans=1;
     ^
0_0_29462777_30842.cpp:55:17: error: 'ans' was not declared in this scope
         if(b&1) ans=ans*a%mod;
                 ^
0_0_29462777_30842.cpp:59:12: error: 'ans' was not declared in this scope
     return ans;
            ^