A. IQ test Solution

#include<stdio.h>

int main()

{

    int n,a[100],i,j,flag=0,count=0,odd=0,eve=0;

    scanf("%d",&n);

    for (i=0;i<n;i++){

        scanf("%d",&a[i]);

        if (a[i]%2==0)

            eve++;

        else odd++;

    }

    if (eve==1){

        for (i=0;i<n;i++){

            if(a[i]%2==0){

                printf("%d\n",i+1);

                break;

            }

        }

    }

    else {

         for (i=0;i<n;i++){

            if(a[i]%2==1){

                printf("%d\n",i+1);

                break;

            }

         }

    }

    return 0;

}