Олимпиадный тренинг

Задача 38667. Acceleration Dunno


Задача

Темы: Вывод формулы
Dunno was trained by Toropyzhka to walk faster. Before training, he walked a path of S meters in t1 seconds. After training Dunno's speed increased by P%. Write a program that determines which path (in meters) Dunno will walk in tseconds after training with Toropyzhka.

Input
Four integers as input: (1<=S<=100), t1(1<=t 1<=100), P (1<=P<=100)  and t(1<=t2<=100).

Imprint
Print one number - the answer to the problem.
 
Example
# Input Output
1 20 5 40 10 56.0