Two people, A and B, enter the water from the east and west banks of the lake at the same time, swim to the opposite bank at a uniform speed, and return immediately after swimming to the opposite bank. It is known that the distance between the two people is 600m from the west bank when they meet for the first time, and the distance from the west bank is 600m when they meet for the second time. How far is the third encounter from the West Bank?
甲乙两人分别自湖东、西两岸同时入水，匀速的游向对岸，游到对岸后立即返回，已知两人第一次相遇时距西岸600m，第二次相遇点距西岸600米，求第三次相遇地点距西岸多少米？
<gadget id="calculator">1_200 - 600</gadget>
<output>600</output>

<result>600</result>