//打印99乘法表

#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>

using namespace std;

int main(int argc, char const *argv[])
{
	//正序乘法表
	for(size_t i = 1;i<=9;i++){
		for(size_t j = 1;j<=i;j++){
			cout << j<<"x"<<i<<"="<<j*i<<"  ";
		}
		cout <<""<<endl;
	}
	//换行
	cout <<"nn"<<endl;
	//倒叙乘法表
	for(size_t i=9;i>=1;i--){
		for(size_t j=1;j<=i;j++){
			cout << i<<"x"<<j<<"="<<i*j<<"  ";
		}
		cout <<""<<endl;
	}
	return 0;
}