题解 | 三角形判断

while True:
    try:
        a,b,c=map(int,input().split())
        if a+b>c and a+c>b and b+c>a and a-b<c and a-c<b and b-c < a:
            if a==b and b==c and a==c:
                print('Equilateral triangle!')
            elif a==b or a==c or b==c:
                print('Isosceles triangle!')
            else:
                print('Ordinary triangle!')
        else:
            print('Not a triangle!')
    except:
        break