Mainak positive integer n mMainak find sequence a_1 a_2 ldot a_n n positive integer interesting integer 1 le le n bitwise XOR element strictly a_i 0 formally p_i bitwise XOR element strictly a_i interesting sequence p_1 p_2 ldot p_n 0for example sequence 1323123 4444 25 interesting 1234 p_2 1 ne 0 41124 p_1 1 oplus 1 oplus 2 2 ne 0 293030 p_2 29 ne 0 are not interestinghere oplus b denote bitwise XOR integer bfind interesting sequence a_1 a_2 ldots a_n report exist sequence sum element sequence equal m ie a_1 a_2 ldot a_n mas reminder bitwise XOR sequence consider 0