Node.js) 백준 29812번: 아니 이게 왜 안 돼

https://www.acmicpc.net/problem/29812

29812번: 아니 이게 왜 안 돼

const [_N, S, DM] = require('fs')
	.readFileSync('./dev/stdin')
	.toString()
	.split('\n')
	.map((v) => v.trim());
const N = +_N;
const [D, M] = DM.split(' ').map(Number);

let H = 0;
let Y = 0;
let U = 0;

let erase = 0;
let energy = 0;
for (let i = 0; i < N; i++) {
	const char = S[i];

	if (['H', 'Y', 'U'].includes(char)) {
		if (erase > 0) {
			energy += Math.min(erase * D, D + M);
			erase = 0;
		}
		if (char == 'H') H++;
		else if (char == 'Y') Y++;
		else if (char == 'U') U++;
	} else {
		erase++;
	}
}
energy += Math.min(erase * D, D + M);
console.log(energy == 0 ? 'Nalmeok' : energy);
const HYU = Math.min(H, Y, U);
console.log(HYU == 0 ? 'I love HanYang University' : HYU);