import sys
readline=sys.stdin.readline

def Bisect_Int(ok,ng,is_ok):
    while abs(ok-ng)>1:
        mid=(ok+ng)//2
        if is_ok(mid):
            ok=mid
        else:
            ng=mid
    return ok

seed=int(readline())
bit=(1<<32)-1
def is_ok(ans):
    cnt=0
    x,y,z,w=seed,1,2,3
    for _ in range(10000001):
        t=(x^(x<<11)&bit)
        x=y
        y=z
        z=w
        w=(w^(w>>19))^(t^(t>>8))
        if w<ans:
            cnt+=1
    return cnt<=5000000
ans=Bisect_Int(7<<28,9<<28,is_ok)
print(ans)