aldolreaction的博客

题面题意求：∑i=lowhigh(i+10−153−i3) \sum_{i=low}^{high} (\sqrt[3]{i+10^{-15}}-\sqrt[3]i) i=low∑high​(3i+10−15​−3i​)T≤2000,1≤low,high≤2×109,high−low≤104T\le 2000,1\le low,high\le 2\times10^9,high-low\le 10^4T≤2000,1≤low,high≤2×109,high−low≤104思路

题面题意给定 n,kn,kn,k，nnn 是数组 aaa 的长度，ai<2ka_i<2^kai​<2k，求满足 a1&a2&a3&...&an≥a1⊕a2⊕a3⊕...⊕ana_1\&a_2\&a_3\&...\&a_n\ge a_1\oplus a_2\oplus a_3\oplus...\oplus a_na1​&a2​&a3​&...&an​≥a1​⊕a2​⊕a3​⊕...⊕an​ a