문제
Problem 1: Bessie Slows Down [Brian Dean, 2014]
Bessie the cow is competing in a cross-country skiing event at the winter Moolympic games. She starts out at a speed of 1 meter per second. However, as she becomes more tired over time, she begins to slow down. Each time Bessie slows down, her speed decreases: she moves at
You are told when and where Bessie slows down, in terms of a series of events. An event like this:
T 17 means that Bessie slows down at a specific time -- here, 17 seconds into the race. An event like this:
D 10 means that Bessie slows down at a specific distance from the start -- in this case, 10 meters.
Given a list of N such events
입력
* Line 1: The value of N.
* Lines 2..1+N: Each line is of the form "T x" or "D x", indicating a time event or a distance event. In both cases, x is an integer that is guaranteed to place the event before Bessie reaches one kilometer of total distance. It is possible for multiple events to occur simultaneously, causing Bessie to slow down quite a bit all at once. Events may not be listed in order.
출력
* Line 1: The total time required for Bessie to travel 1 kilometer.
예제1
2
T30
D10
2970 Input Details
Bessie slows down at time t = 30 and at distance d = 10.
Output Details
Bessie travels the first 10 meters at 1 meter/second, taking 10 seconds. She then slows down to 1/2 meter/second, taking 20 seconds to travel the next 10 meters. She then reaches the 30 second mark, where she slows down again to 1/3 meter/second. The remaining 980 meters therefore take her 980 * 3 = 2940 seconds. The total time is therefore 10 + 20 + 2940 = 2970.