View Compilation Error

0_0_30242282_5225.cpp: In function 'int main()':
0_0_30242282_5225.cpp:82:8: error: 'read' was not declared in this scope
  read(t); 
        ^
0_0_30242282_5225.cpp:99:38: error: 'output' was not declared in this scope
   for(int i=1;i<=n;i++) output(ans[i]),putchar(i==n?'\n':' ');
                                      ^