Freedom is not given to us by anyone; we have to cultivate it ourselves. It is a daily practice... No one can prevent you from being aware of each step you take or each breath in and breath out.

Thích Nhất Hạnh

 
Đề thi Olympic Quốc Tế Lần 12 - Năm 1970

Thể loại: Toán
Language: English
Đề Thi
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