[백준] 1267번 : 핸드폰 요금 - Dart(다트)

https://www.acmicpc.net/problem/1267

import 'dart:io';
void main(){
    int n=int.parse(stdin.readLineSync()!);
    int sy=0;
    int sm=0;
    String? st=stdin.readLineSync();
    var v=st!.split(' ').map<int>((o)=>int.parse(o));
    for(int i=0;i<n;i++){
        int a=v.elementAt(i);
        sy+=(a~/30+1)*10;
        sm+=(a~/60+1)*15;
    }
    if(sy>sm) print("M ${sm}");
    else if(sy<sm) print("Y ${sy}");
    else print("Y M ${sy}");
}