NY10E - Non-Decreasing Digits
A number is said to be made up of non-decreasing digits if all the digits to the left of any digit is less than or equal to that digit.For example, the four-digit number 1234 is composed of digits that are non-decreasing. Some other four-digit numbers that are composed of non-decreasing digits are 0011, 1111, 1112, 1122, 2223. As it turns out, there are exactly 715 four-digit numbers composed of non-decreasing digits.
Notice that leading zeroes are required: 0000, 0001, 0002 are all valid four-digit numbers with non-decreasing digits.
For this problem, you will write a program that determines how many such numbers there are with a specified number of digits.
Input
The first line of input contains a single integer P, (1 ≤ P ≤ 1000), which is the number of data sets that follow. Each data set is a single line that contains the data set number, followed by a space, followed by a decimal integer giving the number of digits N, (1 ≤ N ≤ 64).
Output
For each data set there is one line of output. It contains the data set number followed by a single space, followed by the number of N digit values that are composed entirely of non-decreasing digits.
Example
Input:
3
1 2
2 3
3 4
Output:
1 55
2 220
3 715
hide comments
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vignesh294:
2016-09-03 09:41:32
Wow, what a problem! Learnt a lot from it. |
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square1001:
2016-08-16 05:57:01
No dynamic programming. I've solved with number theory :-)
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aeonflux:
2016-07-09 11:49:33
o(n*10) |
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Junaid:
2016-04-01 13:44:08
Use long long int....costed me 3 WA..:( |
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prateek1985:
2016-02-27 13:07:44
Awesome problem for dp beginners :) |
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abc_c:
2016-02-11 14:41:54
Too Easy...
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Akshay Damle:
2016-01-27 22:54:45
30 sec to debug and then AC in 1 go :D |
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BRAIN:
2015-12-31 14:05:09
O(P + 65 * 9) is enough ! |
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kapoor_adhish:
2015-12-17 12:33:38
AC in first go!!
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subhstar:
2015-11-14 22:33:15
first dp without any help.. :) |
Added by: | John Mario |
Date: | 2011-03-22 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | ACM Greater New York Regionals 2010 |