Test Cases Failure on Hackerrank

Question

For problem statement, I've attached two photos.

https://i.stack.imgur.com/22zyM.png

https://i.stack.imgur.com/5c8e6.png

My Code :

for(i=0;i<300;i++)
{
    x[i]=i;y[i]=i;z[i]=i;
}

//printf("Enter number : "); 
scanf("%d",&n);
printf("%d\n",n);
//for(i=0;i<n;i++)
i=0;
do
{
    for(int j=0;j<n;j++)
    {
        for(int k=0;k<n;k++)
        {
            if(x[i]+y[j]+z[k]==n)
            {
                printf("%d %d %d \n",x[i],y[j],z[k]);
                i++;
            }
        }
    }
}while(i<n);

Now, the output that I'm getting for custom input values is correct for all values. But when I'm trying to check it for the test cases on the website it is showing correctly for only two cases.

Link for problem statement : https://www.hackerrank.com/challenges/beautiful-3-set/problem?h_r=next-challenge&h_v=zen&isFullScreen=false

Please help me in solving this issue. Thanks.

Answer 1

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>

int n, k;

int main() {
scanf("%d", &n);
k = (2 * n) / 3;
printf("%d", k + 1);
printf("\n");
int y = 2 * k - n;
int x = n - 2 * y;
for (int i = 0; i <= y; i++) {
    printf("%d %d %d", i, x + i, n - x - 2 * i);
    printf("\n");
}
for (int i = 0; i < k - y; i++) {
    printf("%d %d %d", y + i + 1, i, n - y - 1 - 2 * i);
    printf("\n");
}
return 0;
}