View Compilation Error

0_0_6415192_10515.cpp:11: error: `NODE' was not declared in this scope
0_0_6415192_10515.cpp: In function `void ins(ll)':
0_0_6415192_10515.cpp:22: error: `word' undeclared (first use this function)
0_0_6415192_10515.cpp:22: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6415192_10515.cpp: In function `int query(ll)':
0_0_6415192_10515.cpp:38: error: `word' undeclared (first use this function)