• 2024-09-22abc367F 判断区间构成的多重集合是否相同
    给定长度为N的两个数组A[i]和B[i],有Q组询问,每次给定(l[i],r[i],L[i],R[i]),问由A[l[i]]A[r[i]]构成的multiset,与B[L[i]]B[R[i]]构成的multiset是否相同?范围:1<=N,Q<=2E5,1<=A[i],B[i]<=N,1<=l[i]<=r[i]<=N,1<=L[i]<=R[i]<=N分析:将int映射为u64,因为集合不区分先后,而加法满足交换