def gsum(n):
    sum = 0
    for i in range(1,n+1):
        term = i*(i+1)*(i+1)
        sum = sum + term
    return(sum)

def hsum(n):
    sum = 0
    for i in range(1,n+1):
        term = i**5
        sum = sum + term
    return(sum)

def harmonic(n):
    sum = 0
    for i in range(1,n+1):
        term = 1/i
        sum = sum + term
    return(sum)

#----------
x = gsum(20)
print(x)

y = hsum(30)
print(y)

z = harmonic(200000)
print(z)