```
class Solution(object):
def increasingTriplet(self, nums):
"""
:type nums: List[int]
:rtype: bool
"""
i, j = 0, 0
l = len(nums)
if l < 3:
return False
for m in range(1, l):
if nums[m] > nums[i]:
break
i = m
j = i + 1
for m in range(i+2, l):
if nums[m] > nums[j]:
return True
if nums[i] < nums[m] < nums[j]:
j = m
continue
if nums[m] < nums[i]:
i = m
return False
```