Problem	coins
User	AlphanumericUsername
Submission Time	2024-04-03 16:14:35
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

shahrnaz.cpp: In function ‘int coin_flips(std::vector<int>)’:
shahrnaz.cpp:8:7: error: ‘b’ was not declared in this scope
8 | b ^= i;
| ^