[백준] 5532번 : 방학 숙제 - Dart(다트)

https://www.acmicpc.net/problem/5532

import 'dart:io';
import 'dart:math';
void main(){
    int? l=int.parse(stdin.readLineSync()!);
    int? a=int.parse(stdin.readLineSync()!);
    int? b=int.parse(stdin.readLineSync()!);
    int? c=int.parse(stdin.readLineSync()!);
    int? d=int.parse(stdin.readLineSync()!);
    var sum=0;
    var sum1=0;
    if(a%c==0) sum=a~/c;
    else sum=a~/c+1;
    if(b%d==0) sum1=b~/d;
    else sum1=b~/d+1;
    print(min(l-sum,l-sum1));
}