[백준] 2914번 : 저작권 - Dart(다트)

https://www.acmicpc.net/problem/2914

import 'dart:io';
void main(){
    String? s=stdin.readLineSync();
    final v=s!.split(' ').map<int>((o)=>int.parse(o));
    var a=v.elementAt(0);
    var i=v.elementAt(1);
    print(a*(i-1)+1);
}