def maxims(l):
    n = 0
    lres = []
    for i in range(1,len(l)-1):
        prev = float(l[i-1])
        actual = float(l[i])
        post = float(l[i+1])
        if prev < actual and actual > post:
            lres.append(actual)
    return lres

def actualitza(nomf,d):
    with open(nomf,'r') as f:
        for linia in f:
            linia = linia.strip()
            l = linia.split(',')
            ll = maxims(l[1:])
            codi = l[0]
            if len(d[codi]) < len(ll):
                d[codi] = ll