729A - Interview with Oleg - CodeForces Solution

n = int(input())
s = input()
check = True
ans = ""
a = 0
if n < 3:
    print(s)
else:
    for i in range(n):
        i += a
        if i > n - 1 and check:
            break
        if check:
            if s[i:i + 3] == "ogo":
                check = False
                a += 2
                ans += "***"
                if i == n - 3:
                    break
            else:
                ans += s[i]
        else:
            if s[i:i + 2] != "go":
                a -= 1
                check = True
            else:
                a += 1
                if i == n - 2:
                    break
print(ans)