Count the most common occurrence of subarray sum. ↵
↵
Constraints:↵
↵
N <= 1e6; abs(ai) <= 1e6↵
↵
Ex:↵
↵
Inp:↵
↵
5↵
1 1 2 1 4↵
↵
Out:↵
↵
3 (there are 3 subarray with the sum of 4: (1, 1, 2), (1, 2, 1), (4)↵
↵
This question appears in ones of my friends competition and I have no idea how to solve it. Can someone help? Thanks.
↵
Constraints:↵
↵
N <= 1e6; abs(ai) <= 1e6↵
↵
Ex:↵
↵
Inp:↵
↵
5↵
1 1 2 1 4↵
↵
Out:↵
↵
3 (there are 3 subarray with the sum of 4: (1, 1, 2), (1, 2, 1), (4)↵
↵
This question appears in ones of my friends competition and I have no idea how to solve it. Can someone help? Thanks.
