View Compilation Error

0_0_13810678_20195.cpp: In function 'bool sol(int, int)':
0_0_13810678_20195.cpp:19:1: error: 'solvable' was not declared in this scope
 solvable.
 ^
0_0_13810678_20195.cpp:21:5: error: expected unqualified-id before 'if'
     if(le == ri)
     ^
0_0_13810678_20195.cpp:35:1: error: 'xy' was not declared in this scope
 xy,
 ^
0_0_13810678_20195.cpp:38:1: error: expected primary-expression before 'if'
 if(sol(le, i) && sol(i+1,
 ^
0_0_13810678_20195.cpp:56:1: error: 'AxA' was not declared in this scope
 AxA, 
 ^