answer.code:7:21: error: non-local lambda expression cannot have a capture-default
    7 | auto euler_Prime = [&](int n) -> void {
      |                     ^
answer.code: In function ‘void solve()’:
answer.code:40:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   40 |     scanf("%lld",&n);
      |     ~~~~~^~~~~~~~~~~
answer.code: In function ‘int main()’:
answer.code:61:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   61 |     scanf("%lld",&t);
      |     ~~~~~^~~~~~~~~~~