Online JudgeProblem SetAuthorsOnline ContestsUser
Web Board
Home Page
F.A.Qs
Statistical Charts
Problems
Submit Problem
Online Status
Prob.ID:
Register
Update your info
Authors ranklist
Current Contest
Past Contests
Scheduled Contests
Award Contest
User ID:
Password:
  Register
Language:
Interpreter
Time Limit: 1000MSMemory Limit: 65536K
Total Submissions: 2038Accepted: 712

Description

A certain computer has 10 registers and 1000 words of RAM. Each register or RAM location holds a 3-digit integer between 0 and 999. Instructions are encoded as 3-digit integers and stored in RAM. The encodings are as follows:
  • 100 means halt
  • 2dn means set register d to n (between 0 and 9)
  • 3dn means add n to register d
  • 4dn means multiply register d by n
  • 5ds means set register d to the value of register s
  • 6ds means add the value of register s to register d
  • 7ds means multiply register d by the value of register s
  • 8da means set register d to the value in RAM whose address is in register a
  • 9sa means set the value in RAM whose address is in register a to the value of register s
  • 0ds means goto the location in register d unless register s contains 0

All registers initially contain 000. The initial content of the RAM is read from standard input. The first instruction to be executed is at RAM address 0. All results are reduced modulo 1000.

Input

The input to your program consists of up to 1000 3-digit unsigned integers, representing the contents of consecutive RAM locations starting at 0. Unspecified RAM locations are initialized to 000.

Output

The output from your program is a single integer: the number of instructions executed up to and including the halt instruction. You may assume that the program does halt.

Sample Input

299
492
495
399
492
495
399
283
279
689
078
100
000
000
000

Sample Output

16

Source

[Submit]   [Go Back]   [Status]   [Discuss]

Home Page   Go Back  To top


All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator