View Code of Problem 10

#include <stdio.h>
int main()
{
    int n;
    scanf("%d", &n);
    while (n--)
    {
        int a[4];
        for (int i = 0; i < 4; i++)
            scanf("%d", &a[i]);
        for(int i=3;i>0;i--)
            for (int j = i - 1; j >= 0; j--)
            {

                if (a[i] == a[j] && a[i])
                {
                    a[i] *= 2;
                    a[j] = 0;
                }
                if (a[i] != a[j] && a[i] && a[j])
                    break;
            }
        for (int i = 3; i > 0; i--)
            for (int j = i - 1; j >= 0; j--)
                if (a[i] == 0 && a[j] != 0)
                {
                    a[i] = a[j];
                    a[j] = 0;
                }
        for (int i = 0; i < 4; i++)
        {
            if(i==3)
                printf("%d\n", a[i]);
            else
                printf("%d ", a[i]);
        }
            
    }
    return 0;
}