import java.math.BigInteger;
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner cin = new Scanner(System.in);
BigInteger a,b;
int t;
t = cin.nextInt();
while ((t--)>0){
a = cin.nextBigInteger();
b = cin.nextBigInteger();
System.out.println(a.subtract(b));//这个减法函数
}
}
}
zcmu-1182 a-b(大数减法java)
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转载自blog.csdn.net/hzyhfxt/article/details/81877960
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