uva-993-贪心

　　题意：给你一个数字y,生成另外一个最小的数字x,使得x里面的每一位相乘等于y

解题思路:直接贪心就是,x里面的每一位都小于等于9

#include <string>
#include<iostream>
#include<map>
#include<memory.h>
#include<vector>
#include<algorithm>
#include<queue>
#include<vector>
#include<stack>
#include<math.h>
#include<iomanip>
#include<bitset>
#include"math.h"
namespace cc
{
    using std::cout;
    using std::endl;
    using std::cin;
    using std::map;
    using std::vector;
    using std::string;
    using std::sort;
    using std::priority_queue;
    using std::greater;
    using std::vector;
    using std::swap;
    using std::stack;
    using std::queue;
    using std::bitset;

    constexpr int N = ;
    int a[N] = {};
    int l = ;
    void solve()
    {
        int n;
        cin >> n;
        long long Q;
        while (n--)
        {
            cin >> Q;
            memset(a,-,sizeof(a));
            l = ;
            if (Q == )
            {
                cout <<  << endl;
                continue;
            }

            while (Q!=)
            {
                int cur = ;
                for (int i = ;i >= ;i--)
                {
                    if (Q >=i && Q%i==)
                    {
                        cur = i;
                        break;
                    }
                }
                if (cur == )
                {
                    l = -;
                    break;
                }
                a[l++] = cur;
                Q = Q / cur;
            }
            if (l == -)
            {
                cout << - << endl;
            }
            else
            {
                for (int i=l-;i>=;i--)
                {
                    cout << a[i];
                }
                cout << endl;
            }
        }

    }
};

int main()
{

#ifndef ONLINE_JUDGE
    freopen("d://1.text", "r", stdin);
#endif // !ONLINE_JUDGE
    cc::solve();

    return ;
}