#include <stdio.h>
#define N 4

void main(void)
{
    int A[N]={0}, B[N]={0}, i, z, num, flag = 0;
    for(i = 0; i <= N; i++)
    {
        printf("Please enter integer number : ");
        while(scanf("%d", &num) != 1)
        {
            _flushall();
           printf("Input Error : Please enter integer number : ");
        }

        A[i] = num;
    }

    for(i = 0; i <= N; i++)
    {
        for(z = 0; z <= N; z++)
            if(A[i] == A[1]) B[i]++;

        if(B[i] >= 3) flag = 1;
    }

    printf("%s", (flag) ? "Found" : "Not Found");
}