摘要：Problem Link If we pick A[i] the 2nd time, it means we have a cycle. Proof: 1st time we pick A[i], the sum before adding A[i] is x; 2nd time we pick A 阅读全文

摘要：Problem Link Based on initial observation, it seems that greedily pick the smallest row / column length works. But the last example test case outputs 阅读全文