codeforces——25A——IQ test

A. IQ test

time limit per test

2 seconds

memory limit per test

256 megabytes

input

standard input

output

standard output

Bob is preparing to pass IQ test. The most frequent task in this test is to find out which one of the givenn 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 givenn 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 containsn 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

52 4 7 8 10

Output

3

Input

41 2 1 1

Output

2

题意是有一个数奇偶性与其他数不同，输出这是第几个数

水题~

#include<stdio.h>#include<iostream>#include<cstring>#include<cmath>#include<algorithm>using namespace std;int main(){    int n;    while(~scanf("%d",&n))    {        int ji=0,ou=0,positionji,positionou;        for(int i=0; i<n; i++)        {            int t;            cin>>t;            if(t%2==0)            {                ou++;                if(ou==1)                    positionou=i+1;            }            else            {                ji++;                if(ji==1)                    positionji=i+1;            }            if((ou>1&&ji==1)||(ou==1&&ji>1))            {                if(ji==1)                    cout<<positionji<<endl;                else                    cout<<positionou<<endl;                ou=ji=10;            }        }    }    return 0;}