View Code of Problem 3855

import java.math.BigInteger;
import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t = sc.nextInt();
		int k = 1;
		while (t > 0) {
			--t;
			BigInteger a = sc.nextBigInteger();
			char op = sc.nextChar();
			BigInteger b = sc.nextBigInteger();
			if (op == '+') System.out.println(a.add(b));
			else System.out.println(a.subtract(b));
		}
	}
}
/*
Main.java:12: error: cannot find symbol
			char op = sc.nextChar();
			            ^
  symbol:   method nextChar()
  location: variable sc of type Scanner
1 error
*/