IQ text
Bob is preparing to pass IQ test. The most frequent task in this test is to find out whi...
IQ text
Bob is preparing to pass IQ test. The most frequent task in this test is to find out which one of the given n numbers differs from the others. Bob observed that one number usually differs from the others in evenness. Help Bob — to check his answers, he needs a program that among the given n numbers finds one that is different in evenness.
Input
The first line contains integer n (3 ≤ n ≤ 100) — amount of numbers in the task. The second line contains n space-separated natural numbers, not exceeding 100. It is guaranteed, that exactly one of these numbers differs from the others in evenness.
Output
Output index of number that differs from the others in evenness. Numbers are numbered from 1 in the input order.
Examples
Input
5
2 4 7 8 10
Output
3
Input
4
1 2 1 1
Output
2
问题分析：
此题是要找出多个数中，奇偶性不同的数的位置，因此可以先统计偶数和奇数的个数，并记录下位置，最后比较输出。
#include <iostream>
using namespace std;
int main()
{
int n,i,a[101],j=0,k=0,p1,p2;
cin>>n;
for(i=0;i<n;i++)
{
cin>>a[i];
if(a[i]%2==0)
{
j++;
p1=i;}
if(a[i]%2==1)
{k++;
p2=i;}
}
if(j>k)
cout<<p2+1;
else cout<<p1+1<<endl;
}
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本文仅代表作者观点，不代表百度立场。
本文系作者授权百度百家发表，未经许可，不得转载。
