69. 贪吃的猴子

const readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});

rl.on('line', function(line) {
    let len = parseInt(line);
    rl.on('line', function(line) {
        let numbers = numbers.split(' ').map(Number);
        rl.on('line', function(line) {
            let N = parseInt(N);
            console.log(maxBananas(numbers, N));
        });
    });
});

function maxBananas(numbers, N) {
    let total = numbers.reduce((acc, val) => acc + val, 0);
    if (N === numbers.length) {
        return total;
    }
    let minSum = Infinity;
    let currentSum = 0;
    let windowSize = numbers.length - N;
    for(let i=0; i<windowSize; i++) {
        currentSum += numbers[i];
    }
    minSum = currentSum;
    for(let i=windowSize; i<numbers.length; i++) {
        currentSum += numbers[i] - numbers[i-windowSize];
        minSum = Math.min(minSum, currentSum);
    }
    return total - minSum;
}