def suma_quadrats_1(n):
    s = 0
    for i in range(1, n+1):
        s = s + i**2
    return s

def suma_quadrats_2 (n):
    suma = 0
    i = 1
    while i <= n:
        suma = suma + i **2
        i = i + 1
    return suma

# tria la funció
# suma_quadrats = suma_quadrats_1
suma_quadrats = suma_quadrats_2

def quadrats (u, v):
    n=0
    ntotal =0
    num = 1
    quadrat = 1
    while quadrat < v:
        if quadrat%10 == u:
            n = n +1
        ntotal = ntotal +1
        num = num + 1
        quadrat = num **2
    return n/ntotal * 100