package lianxi;
import java.util.Scanner;
public class reduam {
public static void main(String[] args) {
Scanner in=new Scanner(System.in);
int i=0,j;//youyuxunhuan
int a;//suijijiajianchengchu
int b;//suijiliangweishu
int c;//suijiliangweishi
int dingzhi;
System.out.println("请输入一个数");
dingzhi=in.nextInt();
Integer[] q=new Integer[30];
Integer[] w=new Integer[30];
Character[] e=new Character[30];
char x='+';
for(i=0;i<dingzhi;i++) {
a=(int)(Math.random()*100);
b=(int)(Math.random()*100);
c=(int)(Math.random()*4+1);
switch(c) {
case 1:x='+';break;
case 2:x='-';break;
case 3:x='*';break;
case 4:x='/';break;
}
for(j=0;j<i;j++) {
if(q[j]==q[i]&&w[j]==w[i]&&e[j]==e[i])
break;
}
System.out.println((i+1)+":"+a+x+b+"=");
}
}
}