Main.java:6: error: cannot find symbol
            BigInteger a=inpu.nextInt();
                         ^
  symbol:   variable inpu
  location: class Main
Main.java:7: error: cannot find symbol
            BigInteger b=inpu.nextInt();
                         ^
  symbol:   variable inpu
  location: class Main
Main.java:8: error: bad operand types for binary operator '+'
            BigInteger c=a+b;
                          ^
  first type:  BigInteger
  second type: BigInteger
3 errors