#include <stdio.h>

int main(void)
{
    int alpha[] = {1,2,1,3,1,4,1,5,1,6};
    int beta[]  = {1,2,3,2,1,1,2,3,2,1};
    int length  = sizeof(alpha) / sizeof(int);
    int counter = 0;

    for(int i=0; i<length; i++) {
        if( alpha[i] != beta[i] ) counter++;
    }

    printf("%d", counter);

    return 0;
}