x = [2,-1,4,0,3,5]
dp = [0]* len(x)
dp[0] = x[0]
dp[1] = x[0]
for i in range(2, len(x)):
dp[i] = max(dp[i-1], x[i]+dp[i-2])
print(dp[5])
eCA9IFsyLC0xLDQsMCwzLDVdCgpkcCA9IFswXSogbGVuKHgpCmRwWzBdID0geFswXQpkcFsxXSA9IHhbMF0KCmZvciBpIGluIHJhbmdlKDIsIGxlbih4KSk6CglkcFtpXSA9IG1heChkcFtpLTFdLCB4W2ldK2RwW2ktMl0pCgpwcmludChkcFs1XSk=