原题链接https://www.luogu.com.cn/problem/P8723

模拟

注意的是都要转换乘相应的进制

// dp练习

#include <iostream>
#include <string>
#include <cstring>
#include <algorithm>

#define ll long long

const ll N = 200;
ll n;

std::string check(ll aa){
    std::string res = "";
    while(aa){
        ll jk = aa % n;
        if(jk >= 10) res += (jk - 10 + 'A');
        else res += std::to_string(jk);
        aa /= n;
    }
    reverse(res.begin(),res.end());
//  std::cout << res << " ";
    return res;
}

void solve(){
//  ll n;
    std::cin >> n;
    for(ll i = 1; i < n; i ++){
        for(ll j = 1; j <= i; j ++){
            ll re = i * j;
            std::string j1 = check(i);
            std::string j2 = check(j);
            std::string jj = check(re);
            std::cout << j1 << "*" << j2 << "=" << jj;
            if(j != i) std::cout << " ";
        }
        if(i != n - 1)
        std::cout << "\n";
    }
}

int main(){
    ll t = 1;
    while(t --)
    solve();
    return 0;
}