求救！！！第五个WA！！！各位大佬看看！！

#include <stdio.h>
int main()
{
    int a[4],i,j,t,n;
    for (i=1;i<=3;i++)
    {
        scanf("%d",&a[i]);
    }
    for (i=1;i<=2;i++)
    {
        for (j=1;j<=(3-i);j++)
        {
            if (a[j]<a[j+1])
            {
                t=a[j];a[j]=a[j+1];a[j+1]=t;
            }
        }
    }

    int b,c,d;
    b=a[1];
    c=a[2];
    d=a[3];


    if (b<=(c+d))
    {
        if ((c*c+d*d)>(b*b))
        {
            printf("Acute triangle\n");
        }
        else if ((c*c+d*d)==(b*b))
        {
            printf("Right triangle\n");
        }
        else if ((c*c+d*d)<(b*b))
        {
            printf("Obtuse triangle\n");
        }

        if ((b==c)&&(c==d))
        {
            printf("Isosceles triangle\n");
            printf("Equilateral triangle\n");
        }
        else if ((b==c)||(b==d)||(d==c))
        {
            printf("Isosceles triangle\n");
        }
        
        
        
    }
    else if (b>(c+d))
    {
        printf("Not triangle");
    }
    
    return 0;


    
}