CCF第一题，JAVA版

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201803-1

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner sc = new Scanner(System.in);
		int a=0;
		int mid=0;
		int sco=0;
		while((a=sc.nextInt())!=0){
			if(a==1){
				sco++;
				mid=0;
			}
			else if(a==2){
				mid += 2;
				sco +=mid;
			}
		}
		System.out.println(sco);
	}

}

201712-1

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner sc = new Scanner(System.in);
		int n=sc.nextInt();
		int min=9999;
		int[] b = new int[n+1];
		for(int i=0;i<n;i++){
			b[i]=sc.nextInt();
		}
		for(int j=0;j<n;j++){
			for(int k=j+1;k<n;k++){
				if(Math.abs(b[k]-b[j])<min){
					min = Math.abs(b[k]-b[j]);
				}
			}
		}
		System.out.println(min);
	}

}

201709-1

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner sc = new Scanner(System.in);
		int money = sc.nextInt();
		int num=0;
		while(money>=10){
			if(money>=50){
				num=(money/50)*7;
				money=money%50;
			}
			else if(money>=30&&money<50){
				num=(money/30)*4+num;
				money=money%30;
			}
			else{
				num = money/10+num;
				money=money%10;
			}
		}
		System.out.println(num);
	}

}

201703-1

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int k = sc.nextInt();
		int sum = 0;
		int num=0;
		int[] b = new int[n+1];
		for(int i=0;i<n;i++){
			b[i] = sc.nextInt();
		}
		for(int j=0;j<n;j++){
			sum=sum+b[j];
			if(sum>=k){
				num++;
				sum=0;
			}
		}
		if(sum!=0){
			num++;
		}
		System.out.println(num);
	}

}