RoboContest

A
10
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D
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10

Masala #SJHPO8P94A

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

Begin 20 (Ikki nuqta orasidagi masofa)

Dekart koordinatalar sistemasida berilgan ikkita nuqta orasidagi masofa topilsin.

Kiruvchi ma'lumotlar:

Nuqta koordinatalari \(x_1, y_1\) va \(x_2, y_2\) lar kiritiladi .\(-1000<=x1, y1, x2, y2<=1000\)

Chiquvchi ma'lumotlar:

Masala javobi \(10^{-2}\) aniqlikda chiqarilsin.

Misollar
# input.txt output.txt
1 
2 1 5 5
 
5.00

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