function arenaTier(commands) {
    let gladiatorsPool = {}
    commands.splice(commands.indexOf("Ave Cesar"), commands.length)
    function tehniqueBattle(a, b) {
        const firstData = Object.entries(gladiatorsPool[a])
        const secondData = Object.entries(gladiatorsPool[b])
        return firstData.some(x => secondData.some(y => y.includes(x[0])))
    }
    function sum(glad) {
        return glad.reduce((a, v) => a + v[1], 0)
    }
    function sortedGladiator (a,b){
        return a.localeCompare(b)
    }
    function sumSkill(glad) {
        return glad.reduce((a, v) => a + v[1], 0)
    }
    function sortSkill(x, y) {
        return sumSkill(Object.entries(y)) - sumSkill(Object.entries(x))
    }
    for (let i = 0; i < commands.length; i++) {
        let [name, techique, skill] = commands[i].split(" -> ");
        if (techique !== undefined) {
            if (!gladiatorsPool[name]) gladiatorsPool[name] = {}
            if (!gladiatorsPool[name][techique]) gladiatorsPool[name][techique] = 0
                if (gladiatorsPool[name][techique] < Number(skill))
                    gladiatorsPool[name][techique] = Number(skill)
        }else {
            let [gladiatorA, gladiatorB] = commands[i].split(" vs ")
          if(gladiatorsPool.hasOwnProperty(gladiatorA) && gladiatorsPool.hasOwnProperty(gladiatorB) ){
              if (tehniqueBattle(gladiatorA, gladiatorB)) {
                    sum(Object.entries(gladiatorsPool[gladiatorA])) > sum(Object.entries(gladiatorsPool[gladiatorB]))
                        ? delete gladiatorsPool[gladiatorB]
                        : delete gladiatorsPool[gladiatorA]
                }
            }
        }
    }
    let  sortedGlad = Object.entries(gladiatorsPool).sort((x, y) =>
    sortSkill(x[1], y[1]) !== 0 ? sortSkill(x[1], y[1]) : sortByName(x[0], y[0])
)
        sortedGlad.forEach(x => {
            const skills = Object.entries(x[1]).sort((x, y) => (y[1] - x[1] !== 0 ? y[1] - x[1] : sortedGladiator(x[0], y[0])))
            console.log(`${x[0]}: ${sumSkill(skills)} skill`)
            skills.forEach(x => console.log(`- ${x[0]} <!> ${x[1]}`))
        })

}