View Compilation Error

0_0_25992889_21856.cpp:80:3: error: template declaration of 'FastIO<T> io'
 } io;
   ^
0_0_25992889_21856.cpp: In function 'int main()':
0_0_25992889_21856.cpp:95:9: error: 'io' was not declared in this scope
       n=io.xint();
         ^