def golden_numbers():
    big = 0
    a = int(input())
    b = int(input())
    c = int(input())
    if(a>b and a>c):
        big+=a
        sma=b
        smal=c
    elif(b>a and b>c):
        big+=b
        sma=a
        smal=c
    elif(c>a and c>b):
        big+=c
        sma=b
        smal=a
    if(big**2==(sma**2+smal**2)):
        return True
    else:
        return False
    
if(golden_numbers()==True):
    print('yes')
elif(golden_numbers()==False):
    print('no')