试试看
先看看怎么写东西$U_{i}(a_i,a_{-i})=\alpha a_i+\frac{1}{2}a_i^2+\gamma \sum_{j\in N(i)}{g_{ij}a_ia_j}$ 120th anniversary of the whole Nanjing universities
试试看
先看看怎么写东西$U_{i}(a_i,a_{-i})=\alpha a_i+\frac{1}{2}a_i^2+\gamma \sum_{j\in N(i)}{g_{ij}a_ia_j}$ 120th anniversary of the whole Nanjing universities
