View Compilation Error

0_0_25640303_4772.cpp: In function 'int f_kth(int)':
0_0_25640303_4772.cpp:28:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_25640303_4772.cpp:137:1: error: expected '}' at end of input
 }
 ^