function solve (arr) {


      let countSongs = arr.shift();

      let typeOflist = arr.pop();


      // class Song {

      //   constructor (typeList, name, time) {

      //     this.typeList = typeList;

      //     this.name = name;

      //     this.time = time;

      //   }

      // }



      for (let i = 0; i < countSongs; i++) {

        let curr = arr[i].split('_');

        // console.log(curr);

        if (curr[0] === typeOflist) {

          console.log(curr[1]);

        } else if (typeOflist === 'all') {

          console.log(curr[1]);

        }


    }





    }