HDU 6124 Euler theorem

Problem Description

HazelFan is given two positive integers a,b， and he wants to calculate amodb. But now he forgets the value of b and only remember the value of a, please tell him the number of different
possible results.

Input

The first line contains a positive integer T(1≤T≤5), denoting the number of test cases. 

For each test case: 

A single line contains a positive integer a(1≤a≤109).

Output

For each test case: 

A single line contains a nonnegative integer, denoting the answer.

Sample Input

2 

1 

3

Sample Output

2 

3

题目大意：

输入一个数n，有n组测试数据，输入A，求A%B有几种可能，B可以为任意值。 

这是一个规律题，可以先用暴力求出正确答案，再观察规律。这道题的规律是 

d=(b-1)/2+2或d=(b+1)/2+1。d为结果，b为输入值

c++

#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main()
{
long long int a,b,c,d,e,f;
cin>>a;
while(a--)
{
cin>>b;
d=(b-1)/2+2;
cout<<d<<endl;
}
return 0;
}