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"蔚来杯"2022牛客暑期多校训练营4 N-Particle Arts
问题描述 In a confined NIO space, there are nnn NIO particles, the iii-th of which has aia_iai joule energy. The NIO particles are very special as they keep colliding with each other randomly. When one particle carrying energy aaa joule collides with anothe