View Compilation Error

0_0_28958449_30106.cpp: In function 'double dfs(int)':
0_0_28958449_30106.cpp:7:24: error: 'gl' was not declared in this scope
  if(dp[a])return dp[a]*gl;
                        ^
0_0_28958449_30106.cpp:10:16: error: 'gl' was not declared in this scope
   if(a+i<21)s+=gl*g[i]*dfs(a+i)/13;
                ^
0_0_28958449_30106.cpp:12:21: error: 'gl' was not declared in this scope
  dp[a]=max(wi[a],s)/gl;
                     ^