Cho $\sum_{i=0}^{n}a_{i}=0$. Tìm MIN: $\sum_{i=0}^{n}i.a^{i}_{i}$ với i tự nhiên
Edited by Love Dan, 25-09-2015 - 19:06.
Tìm MIN: $\sum_{i=0}^{n}i.a^{i}_{i}$
Started By Love Dan, 25-09-2015 - 19:05
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