[ABC311G]OneMoreGridTask题目信息题面翻译给你一个\(n\timesm\)的矩阵\(a\)，求：\[\max_{1\leql_1\leqr_1\leqn,1\leql_2\leqr_2\leqm}(\sum_{l_1\leqi\leqr_1,l_2\leqj\leqr_2}a_{i,j}\times\min_{l_1\leqi\leqr_1,l_2\leqj\leqr_2}a_{i