Problem hidden
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HNPOSTMAN - Nhân viên bưu điện

Example

Input:
4 10
-7 5
-2 3
5 7
9 5
Output:
42
Input:
7 1
9400000 10000000
9500000 10000000
9600000 10000000
9700000 10000000
9800000 10000000
9900000 10000000
10000000 10000000
Output:
1358000000000000

Được gửi lên bởi:noname00.pas
Ngày:2017-11-27
Thời gian chạy:0.100s
Giới hạn mã nguồn:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Ngôn ngữ cho phép:C-CLANG C CSHARP C++ 4.3.2 CPP CPP14 CPP14-CLANG C99 JAVA PAS-FPC PYTHON PYTHON3
Nguồn bài:Bài tập Ôn HN 01/2017 (Thầy Nguyễn Đức Nghĩa)

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