• [1181] Big Mouth of Abyss - Kog'Maw

• 时间限制: 1000 ms　内存限制: 65535 K
• 问题描述
• The game LOL is an interesting game. Recently we are playing this game. Once I used a champion named Kog'Maw - The Mouth of the Abyss.
For I have to support teammate, I only have a little time to do the last hit to kill the enemy's minions.
There're N (2 <= N <= 10000) minions, each minion has a threat value TVi (1 <= TVi <= 9).
And there's a formula to calculate the total threat value:

$\sum_{i = 1}^{n}\left \{ TV[i] * 10^{n-1}{} \right \}$

I only can kill K (1 <= K < N) minions.
When I kill one minion, the minions after it will move to front for one step. It means when I kill Minion[5], then Minion[6] will be Minion[5] and Minion[7] will be Minion[6] and so on.
How to kill the minions that I can leave the minimum total threat value?
• 输入
• This problem contains several cases.
Each case contains two numbers. The first number T is the total threat value at the very beginning (1 <= T < 10^10001). Then follows an integer K, means the number that minions I can kill.
• 输出
• For each case, you should output the minimum total threat value after I kill K minions.
• 样例输入
• 123456 4
3212311 4

• 样例输出
• 12
111

• 提示
• 无
• 来源
• Ne123123
• 操作
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