Java实现 洛谷 P1089 津津的储蓄计划

import java.util.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int sum=0;
		int cun=0;
		for(int i=1;i<=12;i++) {
			int ys=sc.nextInt();
			int yl=sum+300;
			if(yl<ys) {
				System.out.println(-i);
				System.exit(0);
			}
			if(yl-ys>100) {
				sum=(yl-ys)%100;
				cun=cun+(yl-ys)/100*100;
			}
			else
				sum=yl-ys;
		} 
		System.out.println((int)(sum+cun*1.2));
		sc.close();
	}
}