01.SpaceCrewManagement

function solve (commandArr) {
    class Astronaut {
        constructor(name, location) {
            this.name = name;
            this.location = location;
            this.skills = [];
        }

        toString() {
            return `Astronaut: ${this.name}, Section: ${this.location}, Skills: ${this.skills.sort().join(', ')}`;
        }
    }


    let astronautArr = [];
    let numAstronats = Number(commandArr[0]);

    for (let idx = 1; idx <= numAstronats; idx++) {
        let astroStr = commandArr[idx];
        let [name, location, skills] = astroStr.split(' ');
        let astronaut = new Astronaut(name, location);
        let skillArr = skills.split(',');

        for (let skill of skillArr) {
            astronaut.skills.push(skill);
        }
        astronautArr.push(astronaut);
    }

    for (let idx = numAstronats + 1; idx < commandArr.length; idx++) {
        currentCommandTokens = commandArr[idx].split(' / ');
        if (currentCommandTokens[0] === "End") {
            break;
        } else if (currentCommandTokens[0] === "Perform") {
            let [_, name, location, task] = currentCommandTokens;
            let currentAstronaut = astronautArr.find(p => p.name === name);

            if (!currentAstronaut) {
                continue;
            }

            if (currentAstronaut.location !== location || !currentAstronaut.skills.includes(task)) {
                console.log(`${currentAstronaut.name} cannot perform the skill: ${task}.`);
                continue;
            }

            console.log(`${currentAstronaut.name} has successfully performed the skill: ${task}!`)

        } else if (currentCommandTokens[0] === "Transfer") {
            let [_, name, location] = currentCommandTokens;
            let currentAstronaut = astronautArr.find(p => p.name === name);

            if (!currentAstronaut) {
                continue;
            }

            currentAstronaut.location = location;
            console.log(`${currentAstronaut.name} has been transferred to: ${location}`);


        } else if (currentCommandTokens[0] === "Learn Skill") {
            let [_, name, task] = currentCommandTokens;
            let currentAstronaut = astronautArr.find(p => p.name === name);

            if (!currentAstronaut) {
                continue;
            }

            if (currentAstronaut.skills.includes(task)) {
                console.log(`${currentAstronaut.name} already knows the skill: ${task}.`);
            } else {
                currentAstronaut.skills.push(task);
                console.log(`${currentAstronaut.name} has learned a new skill: ${task}.`);
            }
        }
    }

    console.log(astronautArr.join('\n'));

}