一、题目

详见代码

二、代码

import java.util.Scanner;

/**
* 3
* 1 1 5 10
* 2 3 4
* 1 4 6 -5
*/
public class main4 {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);

    while (in.hasNext()) {  
        //输入行数row  
        int row = in.nextInt();

        //输入成长值  
        String\[\] strArr = new String\[row\];  
        String a = in.nextLine();  
        for (int i = 0; i < strArr.length; i++) {  
            strArr\[i\] = in.nextLine();  
        }

        //test  
        System.out.println(strArr\[0\]);  
        System.out.println(strArr\[1\]);  
        System.out.println(strArr\[2\]);  
        //

        //计算成长值  
        int mLast = 0; //每日成长值开始时间  
        int nLast = 0; //每日成长值结束时间  
        int valueLast = 0;//每日成长值  
        int mNext = 0; //每日成长值开始时间  
        int nNext = 0; //每日成长值结束时间  
        int valueNext = 0;//每日成长值  
        int value2Sum = 0; //任务成长值累计值  
        int value1Sum = 0; //每日成长值累计值  
        int count = 0; //统计每日成长值的数据有多少条  
        int sum = 0; //总成长值

        for (int i = 0; i < strArr.length; i++) {  
            String\[\] strArr1 = strArr\[i\].split(" ");

            //test  
            for (int j = 0; j < strArr1.length; j++) {  
                System.out.println(strArr1\[j\]);  
            }  
            //

            if (Integer.parseInt(strArr1\[0\]) == 2) {  
                value2Sum = value2Sum + Integer.parseInt(strArr1\[2\]);  
            }

            if (count != 0) {  
                if (Integer.parseInt(strArr1\[0\]) == 1) {  
                    mNext = Integer.parseInt(strArr1\[1\]);  
                    nNext = Integer.parseInt(strArr1\[2\]);  
                    valueNext = Integer.parseInt(strArr1\[3\]);  
                    value1Sum = value1Sum + valueNext \* (nNext - mNext + 1);  
                    if (valueNext >= valueLast && nLast >= mNext) {  
                        value1Sum = value1Sum - (Math.abs(nLast - mNext) + 1) \* valueLast;  
                    }  
                    if (valueNext < valueLast && nLast >= mNext) {  
                        value1Sum = value1Sum - (Math.abs(nLast - mNext) + 1) \* valueNext;  
                    }  
                    valueLast = valueNext;  
                    nLast = nNext;  
                    count++;  
                }

            }

            if (count == 0) {  
                if (Integer.parseInt(strArr1\[0\]) == 1) {  
                    mLast = Integer.parseInt(strArr1\[1\]);  
                    nLast = Integer.parseInt(strArr1\[2\]);  
                    valueLast = Integer.parseInt(strArr1\[3\]);  
                    value1Sum = valueLast \* (nLast - mLast + 1);  
                }  
                count++;  
            }  
        }

        sum = value1Sum + value2Sum;  
        System.out.println(sum);

    }  
    in.close();  
}  

}

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答案仅供参考