from random import randint
def mille_sauts():
    position=0
    for i in range(1000):
        if randint(0,1)==0:
            position=position+1
        else:
            position=position-1
    return position
#print(mille_sauts())

def cent_metres(n):
    p=0
    for i in range(n):
        position=mille_sauts()
        if position>100:
            p=p+1
    return p
print(cent_metres(10000))