/*
* @lc app=leetcode.cn id=1781 lang=typescript
*
* [1781] 所有子字符串美丽值之和
*/
// @lc code=start
function beautySum(s: string): number {}
// @lc code=end
function beautySum(s: string): number {
const n = s.length
let res = 0
for (let i = 0; i < n; i++) {
const cnt: number[] = new Array(26).fill(0),
cnt1: Set<number>[] = []
let min = 1,
max = 1
for (let j = i; j < n; j++) {
const ch = s.charCodeAt(j) - 97
if (cnt[ch]) {
cnt1[cnt[ch]].delete(ch)
if (min === cnt[ch] && cnt1[cnt[ch]].size === 0) min++
} else min = 1
cnt[ch]++
if (!cnt1[cnt[ch]]) cnt1[cnt[ch]] = new Set()
cnt1[cnt[ch]].add(ch)
if (cnt[ch] > max) max = cnt[ch]
res += max - min
}
}
return res
}
test.each([
{ input: { s: 'aabcb' }, output: 5 },
{ input: { s: 'aabcbaa' }, output: 17 },
])('input: s = $input.s', ({ input: { s }, output }) => {
expect(beautySum(s)).toEqual(output)
})