View Compilation Error

0_0_37866028_2998.cpp:18:1: error: 'll' does not name a type
 ll gcd(ll a,ll b){return !b?a:gcd(b,a%b);}
 ^
0_0_37866028_2998.cpp:19:7: error: 'll' does not name a type
 const ll mod = 1e9+7;
       ^
0_0_37866028_2998.cpp:20:1: error: 'll' does not name a type
 ll qpow(ll a,ll b){ll t=1;assert(b>=0);for(;b;b>>=1){if(b&1)t=t*a%mod;a=a*a%mod;}return t;}
 ^