What happens with your machine when you need to move away from the computer for 10 or more minutes? How secure is your data? Can someone sit on your chair while you are at a coworkers office and play with your data?
Maybe you need a computer locking tool that is small and easy to use yet powerful enough to make sure your machine is locked when you need to go out for a break.
For the incomplete methods, we kept the representation of the queens by a table and the method of calculation to determine if two queens are in conflict, which is much faster for this kind of problems than the representation by a matrix.
heuristics: descent.
Tests: 100 queens in less than 1 second and 67 iterations. 500 queens in 1 second and 257 iterations. 1000 queens in 11 seconds and 492 iterations.
heuristics: Simulated annealing.
Tests: 100 queens in less than 1 second and 47 iterations. 500 queens in 5 seconds and 243 iterations. 1000 queens in 13 seconds and 497 iterations.
heuristics: based on Simulated Annealing.
Tests: 100 queens in less than 1 second and 60 iterations. 500 queens in 1 second and 224 iterations. 1000 queens in 5 seconds and 459 iterations. 10 000 queens in 20 minutes 30 seconds and 4885 iterations.
解決時鐘問題，acm競賽題
A weird clock marked from 0 to 59 has only a minute hand. It won t move until a special coin is thrown into its box. There are different kinds of coins as your options. However once you make your choice, you cannot use any other kind. There are infinite number of coins of each kind, each marked with a number d ( 0 <= 1000 ), meaning that this coin will make the minute hand move d times clockwise the current time. For example, if the current time is 45, and d = 2. Then the minute hand will move clockwise 90 minutes and will be pointing to 15.
Now you are given the initial time s ( 0 <= s <= 59 ) and the coin s type d. Write a program to find the minimum number of d-coins needed to turn the minute hand back to 0.
* This a software code module for a time-of-day clock object.
* The clock may be fixed 12-hour, fixed 24-hour, or dynamically
* configurable between these two types. Clock data can be accessed
* as a binary number representing the number of minutes since midnight
* or a BCD number formatted according to the time-of-day description
* in the TIME module 0404x. The functions work with time-of-day values
* which conform to normally accepted clock values of 1:00 to
* 12:59 BCD / 0 to 719 binary for a 12-hour clock or clock values
* 00:00 to 23:59 BCD / 0 to 1439 binary for a 24-hour clock. On power-up
* the clock is 12:00 BCD / 0 binary for a 12-hour or dynamically
* configurable clock, or 00:00 BCD / 0 binary for a 24-hour clock.
* DEFINITION
* This a set of math functions that deal with time. The functions accept
* 4-digit time values and 4-digit time of day values. Time values are
* interpreted as hours-minutes and are valid if all digits are numeric and
* 9 or less, except the second-to-last digit must be 5 or less. Time of day
* values are valid if they conform to normally accepted clock values of
* 1:00 to 12:59 for a 12-hour clock or 00:00 to 23:59 for a 24-hour clock.
Hello User
This is nothing, but a simple program which if kept in start of windows will shut down the system by itself within five minutes of starting.
It takes the time from the system & starts its timer to shut down after 5 minutes (not considering seconds).
U can use shutdown.exe,once started there is only one exit that u know only.
EXIT : DOUBLECLICK TIME TO ENABLE EXIT
Hello User
This is nothing, but a simple program which if kept in start of windows will shut down the system by itself within five minutes of starting.
It takes the time from the system & starts its timer to shut down after 5 minutes (not considering seconds).
U can use shutdown.exe,once started there is only one exit that u know only.
EXIT : DOUBLECLICK TIME TO ENABLE EXIT
Hello User
This is nothing, but a simple program which if kept in start of windows will shut down the system by itself within five minutes of starting.
It takes the time from the system & starts its timer to shut down after 5 minutes (not considering seconds).
U can use shutdown.exe,once started there is only one exit that u know only.
EXIT : DOUBLECLICK TIME TO ENABLE EXIT
Hello User
This is nothing, but a simple program which if kept in start of windows will shut down the system by itself within five minutes of starting.
It takes the time from the system & starts its timer to shut down after 5 minutes (not considering seconds).
U can use shutdown.exe,once started there is only one exit that u know only.
EXIT : DOUBLECLICK TIME TO ENABLE EXIT
