48. 最少停车数

const readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});
rl.on('line', function(input) {
    const inputArray = input.split(',');
    const inputString = inputArray.join('');
    const park = inputString.split('0');

    let min = 0;
    for(const slot of park) {
        const occLen = slot.length;
        if (occLen === 0) {
            min = min;
        } else if(occLen % 3 === 0 && occLen !== 0) {
            min += Math.floor(occLen / 3);
        } else if (occLen % 3 !== 0) {
            min += Math.floor((occLen - occLen%3)/3);
            min += 1;
        }
    }
    console.log(min);
});