View Compilation Error

0_0_33601983_23245.cpp: In function 'Node operator+(Node, Node)':
0_0_33601983_23245.cpp:37:9: error: 'struct Node' has no member named 'max'
     res.max = std::max(std::max(x.max, y.max), x.rmax + y.lmax);
         ^
0_0_33601983_23245.cpp:37:35: error: 'struct Node' has no member named 'max'
     res.max = std::max(std::max(x.max, y.max), x.rmax + y.lmax);
                                   ^
0_0_33601983_23245.cpp:37:42: error: 'struct Node' has no member named 'max'
     res.max = std::max(std::max(x.max, y.max), x.rmax + y.lmax);
                                          ^
0_0_33601983_23245.cpp: In function 'int main()':
0_0_33601983_23245.cpp:78:65: error: expected '}' at end of input
         std::sort(a + 1, a + n + 1), std::sort(b + 1, b + n + 1);
                                                                 ^
0_0_33601983_23245.cpp:78:65: error: expected '}' at end of input