View Compilation Error

0_0_1735143_5741.cpp:11: error: ISO C++ forbids declaration of `a' with no type
0_0_1735143_5741.cpp:11: error: expected `;' before "double"
0_0_1735143_5741.cpp: In function `node* built(int, int, int, int, bool)':
0_0_1735143_5741.cpp:46: error: 'struct node' has no member named 'maxL'
0_0_1735143_5741.cpp: In function `void insert(node*, int, int, double, bool)':
0_0_1735143_5741.cpp:69: error: 'struct node' has no member named 'maxL'
0_0_1735143_5741.cpp:69: error: 'struct node' has no member named 'maxL'
0_0_1735143_5741.cpp: In function `double Q(node*, int, int, int, int, bool)':
0_0_1735143_5741.cpp:98: error: 'struct node' has no member named 'maxL'