문제
제한 사항
입출력 예
풀이
const input = require('fs').readFileSync('/dev/stdin').toString().trim().split('\n');
const sol = (input) => {
const n = +input.shift();
const energy = input[0].split(" ").map(Number);
let max = Number.MIN_SAFE_INTEGER;
const dfs = (arr, sum) => {
if (arr.length === 2) {
max = Math.max(max, sum);
} else {
for (let i = 1; i < arr.length - 1; i++) {
const restArr = [...arr.slice(0, i), ...arr.slice(i + 1)];
dfs(restArr, sum + arr[i - 1] * arr[i + 1]);
}
}
};
dfs(energy, 0);
return max;
};
console.log(sol(input));