function solve (input) {
  let list = {}
  for (let inp of input) {
    if (inp === 'Season end') {
      break
    }
    if (inp.includes('->')) {
      let [name, position, skill] = inp.split(' -> ')
      skill = +skill
      if (!list.hasOwnProperty(name)) {
        list[name] = {
          params: new Map(),
          totalSkills: 0
        }
        list[name].params.set(position, skill)
        list[name].totalSkills += skill
      } else {
        if (list[name].params.has(position)) {
          let existSkill = list[name].params.get(position)
          if (existSkill < skill) {
            list[name].totalSkills -= existSkill
            list[name].params.set(position, skill)
            list[name].totalSkills += skill
          }
        } else {
          list[name].params.set(position, skill)
          list[name].totalSkills += skill
        }
      }
    } else {
      let [player1, player2] = inp.split(' vs ')
      if (list.hasOwnProperty(player1) && list.hasOwnProperty(player2)) {
        let currentParam1 = [...list[player1].params]
        let currentParam2 = [...list[player2].params]
        for (let [key, value] of currentParam1) {
          let currentSkill = key
          for (let [key1, value1] of currentParam2) {
            let currentSkill2 = key1
            if (currentSkill === currentSkill2) {
              if (value > value1) {
                delete list[player2]
              } else if (value1 > value) {
                delete list[player1]
              }
            }
          }
        }
      }
    }
  }

  let sorted = Object.entries(list).sort((a, b) => {
    let result = b[1].totalSkills - a[1].totalSkills
    if (result === 0) {
      result = a[0].localeCompare(b[0])
    }
    return result
  })

  sorted.forEach(x => {
    console.log(`${x[0]}: ${x[1].totalSkills} skill`)

    Array.from(x[1].params)
      .sort((a, b) => b[1] - a[1])
      .forEach(([position, skill]) =>
        console.log(`- ${position} <::> ${skill}`)
      )
  })
}