130-家电类

[java]代码库

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);    
 
        int num = scan.nextInt();
        int sum = 0;
        for( int i = 0; i < num; i++)
        {
        	int n = scan.nextInt();
        	int w = scan.nextInt();
        	sum += w;
        }
        System.out.println(sum);
        scan.close();
   }
}
interface CalInterface   
{  
     int getweight();  
}
class TV implements CalInterface
{
	int weight;
	public TV (int a)
	{
		weight = a;
	}
	public int getweight()
	{
		return weight;
	}
}
class WashMachine implements CalInterface
{
	int weight;
	public WashMachine (int a)
	{
		weight = a;
	}
	public int getweight()
	{
		return weight;
	}
}
class Airconditioner implements CalInterface
{
	int weight;
	public Airconditioner (int a)
	{
		weight = a;
	}
	public int getweight()
	{
		return weight;
	}
}
class Truck
{
	
}