#include <stdio.h>
int main()
{
    int A[20], n, i;
    int invalid = 1, valid = 1; // 2 for unused value
    int count = 0;
    printf("Enter number of inputs :");
    scanf("%d", &n);
    if (n >= 1)
    {
        printf("Enter %d inputs :\n", n);
        for (int j = 1; j <= n; j++)
        {
            scanf("%d", &A[j]);
        }
        for (i = 1; i <= n; i++)
        {
            if (A[i] % 3 == 0)
            {
                valid = 1;
            }
            else
            {
                invalid = 0;
            }
        }
    }
    else
    {
        printf("Your inputs are not valid.\n");
    }
    switch (valid * invalid)
    {
    case 1:
    {
        printf("Congrats, Your string is valid \n");
        break;
    }
    case 0:
    {
        printf("Your string is not valid\n");
        break;
    }
    }
    return 0;
}