View Compilation Error

0_0_39749619_1235.cpp: In function 'int main()':
0_0_39749619_1235.cpp:252:18: error: could not convert 'Fastio::cin.Fastio::Reader::operator>><int>(n)' from 'Fastio::Reader' to 'bool'
  252 |         while(cin>>n){
      |                  ^
      |                  |
      |                  Fastio::Reader