DreamGrid is playing the music game Live Love. He has just finished a song consisting of n notes and got a result sequence A1,A2,...,An (Ai∈ {PERFECT, NON-PERFECT}). The score of the song is equal to the max-combo of the result sequence, which is defined as the maximum number of continuous PERFECTs in the sequence.
Formally speaking, max-combo(A)=max { k | k is an integer and there exists an integer i (1≤i≤n−k+1) such that Ai=Ai+1=Ai+2=...=Ai+k−1= PERFECT }. For completeness, we define max(∅)=0.
As DreamGrid is forgetful, he forgets the result sequence immediately after finishing the song. All he knows is the sequence length n and the total number of PERFECTs in the sequence, indicated by m. Any possible score s he may get must satisfy that there exists a sequence A′ of length n containing exactly m PERFECTs and (n−m) NON-PERFECTs and max-combo(A′)=s. Now he needs your help to find the maximum and minimum s among all possible scores.
Input
There are multiple test cases. The first line of the input contains an integer T (1≤T≤100), indicating the number of test cases. For each test case:
The only line contains two integers n and m (1≤n≤103, 0≤m≤103, m≤n), indicating the sequence length and the number of PERFECTs DreamGrid gets.
Output
For each test case output one line containing two integers smax and smin, indicating the maximum and minimum possible score.
Sample Input
5
5 4
100 50
252 52
3 0
10 10
Sample Output
4 2
50 1
52 1
0 0
10 10
Hint
Let's indicate a PERFECT as P and a NON-PERFECT as N.
For the first sample test case, the sequence (P,P,P,P,N) leads to the maximum score and the sequence (P,P,N,P,P) leads to the minimum score.
题目意思:对于t组样例,每一组一共有n个音符,m个音符属于一种,剩下的音符都是不同种的,出现连续同一种音符的个数作为得分,求最大得分和最小得分。
解题思路:其实我们可以这样想一共会有x=n-m+1种音符,最大得分必然是相同音符的数量也就是m,而对于最小得分:如果音符的种类x大于等于同一种的数量m,
那么同一种音符便可以被不同种的音符一一分割开;如果音符的种类小于同一种的数量m,那么想要得到最小连续同一类的音符数,可以理解为将m利用不同种类的音符划分为若*分。
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;
int main()
{
int t,a,b,ans,x;
scanf("%d",&t);
while(t--)
{
scanf("%d%d",&a,&b);
x=a-b+;
if(b==)
{
ans=;
}
else if(x>=b)
{
ans=;
}
else if(x<b)
{
if(b%x!=)
{
ans=b/x+;
}
else
{
ans=b/x;
}
}
printf("%d %d\n",b,ans);
}
return ;
}