good_aneo_answer.js

/**
 * Auto-generated code below aims at helping you parse
 * the standard input according to the problem statement.
 **/

const speed = parseInt(readline());
const lightCount = parseInt(readline());

const lights_data = [];

const getSpeedInKmH = (dist, dur) => Math.floor(
    dist / (dur /3.6)
);

for (let i = 0; i < lightCount; i++) {
    var inputs = readline().split(' ');
    
    const current = {}
    current.dist = parseInt(inputs[0]);
    current.dur = parseInt(inputs[1]);
    
    lights_data.push(current);
}

function passesAtGreen(light, km_speed) {
    const arrival_time_s = ((light.dist/ km_speed) * 3.6) + 0.001;
    const passage_iteration = Math.floor(arrival_time_s / (light.dur));
    
    return passage_iteration %2 === 0;
}

function computeResponse(proposal = speed, i = 0) {    
    if(i >= lights_data.length) {
        return proposal;
    }
    
    if(passesAtGreen(lights_data[i], proposal)) {
        return computeResponse(proposal, i+1);
    }
    
    return computeResponse(proposal - 1, 0);
}

console.log(computeResponse());

const speed = parseInt(readline());
const lightCount = parseInt(readline());
let allSpeed = [...Array(200).keys()].map(i => i + 1)

let previousDistance = 0
for (let i = 0; i < lightCount; i++) {
var inputs = readline().split(' ');
const distance = parseInt(inputs[0]);
const duration = parseInt(inputs[1]);
allSpeed = allSpeed.filter(v => {
let sign = Math.sin(Math.PI * (distance / (v * 1000 / 3600)) / duration)
let isPassing = sign > 0 ? sign >= 0.0001 : sign >= -0.0001
return isPassing && v <= speed

});
previousDistance = distance
}

// Write an answer using console.log()
// To debug: console.error('Debug messages...');

console.log(Math.max(...allSpeed));