A
10
B
10
C
10
D
10
E
10
F
10
G
10
H
10
I
10
J
10
K
10
L
10
M
10
N
10
O
10
P
10
Q
10
R
10
S
10
T
10
U
10
V
10
W
10
X
10
Y
10
Z
10
AA
10
AB
10
AC
10
AD
10
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10
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10
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10
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10
AI
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AK
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AL
10
AM
10
AN
10
AO
10
AP
10
AQ
10
AR
10
AS
10

Masala #FAY9ECWAWN

Xotira 16 MB Vaqt 1000 ms
14
Muallif: Otabek Aralov Abduxamitovich

Begin 37 (Masofa #3)

Birinchi avtomobilning tezligi \(v_1\) km/soat, ikkinchisi \(v_2\) km/soat, ular orasidagi masofa S km. Agar mashinalar bir-biriga qarab yurdi. t soatdan keyin ular orasidagi masofani aniqlang.

Kiruvchi ma'lumotlar:

Yagona qatorda \(v_1\), \(v_2\), s, t sonlar kiritiladi.\(1<=v_1, v_2, s, t<=1000\)

Chiquvchi ma'lumotlar:

Masala javobi chiqarilsin.

Misollar
# input.txt output.txt
1 
2 3 20 2
 
10
2 
5 4 45 5
 
0

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