## Search found 120 matches

Sat Feb 27, 2021 9:03 pm
Forum: News, Suggestions, and FAQ
Topic: Errors/Warnings/Bugs
Replies: 624
Views: 208635

### Re: Errors/Warnings/Bugs

thanks - works for me now.
Sat Feb 27, 2021 7:39 pm
Forum: News, Suggestions, and FAQ
Topic: Errors/Warnings/Bugs
Replies: 624
Views: 208635

### Re: Errors/Warnings/Bugs

I solved the latest problem 749. After I typed in my solution, they showed me, I was 70th. But I can not enter the solution thread (no access) and neither the problem description nor my progress showed my that I've solved the problem. EDIT: The last entry in the fastest solver table is 40 minutes ag...
Thu Feb 18, 2021 9:28 pm
Forum: News, Suggestions, and FAQ
Topic: Number of solvers for the latest 160 problems
Replies: 16
Views: 1202

### Re: Number of solvers for the latest 160 problems

You should consider time as one reason: I started around 14 years ago - at this time there were only around 140 problems available. During this time, I reached at best place 9 within my country and was within the best 200 solvers in the world. My progress was around 70%. But times change: I had time...
Sat Oct 10, 2020 7:20 pm
Forum: News, Suggestions, and FAQ
Topic: Meetup of all hard-core users who solved above X number of problems?
Replies: 4
Views: 1195

### Re: Meetup of all hard-core users who solved above X number of problems?

Meetings are not a clever idea this year. Two countries have not published any cases - Turkmenistan and North Korea. And according to the statistics, meetings there would be save as there are only one (North Korea) respectively two (Turkmenistan) members with more than 100 problems solved. Otherwise...
Sat Apr 25, 2020 7:14 pm
Forum: News, Suggestions, and FAQ
Topic: Tips for someone trying to get top 50?
Replies: 3
Views: 1975

### Re: Tips for someone trying to get top 50?

In general: 1. Find a specialization. 1a. Train this part. 2. Read the problem max. 1s after the publishing 3. Code fast to solve it within the top 50. To be serious: 65 problems with a maximum difficulty of 20% is not so much. You just need time to get better an better. Read the solutions in the so...
Wed Apr 22, 2020 6:33 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 155
Replies: 17
Views: 9841

### Re: Problem 155

50 is missing:
r(60,60) = 30
r(60,60,60) = 20
p(r(60,60),r(60,60,60)) = 50
Wed Apr 01, 2020 9:13 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 679
Replies: 2
Views: 1569

### Re: Problem 679

Have you checked overlapping occurances?
"arearea"
Fri Jan 03, 2020 6:38 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 695
Replies: 2
Views: 1584

### Re: Problem 695

The Unit-Square is the black one.
For clarification the three points should be chosen that the rectangles combine to a clear non-square rectangle.
Mon Oct 21, 2019 11:00 pm
Forum: News, Suggestions, and FAQ
Topic: Errors/Warnings/Bugs
Replies: 624
Views: 208635

### Re: Errors/Warnings/Bugs

Thanks - for me, it's working again.
Mon Oct 21, 2019 9:58 pm
Forum: News, Suggestions, and FAQ
Topic: Errors/Warnings/Bugs
Replies: 624
Views: 208635

### Re: Errors/Warnings/Bugs

Thu Aug 15, 2019 8:35 pm
Forum: Recreational
Topic: Mystery of Problem 480.
Replies: 2
Views: 3054

### Re: Mystery of Problem 480.

Statistics: There are ~5*10^17 possible words in it. And a lot of them are readable. Now calculate all of their Numbers. Build sums of three of them: You should find a sum which appears multiple times. (see Goldbach's conjecture) It is guaranteed if there are at least 1.5*10^6 readable words. And th...
Sun Jun 30, 2019 9:28 pm
Forum: Number Theory
Topic: Generate tuples of pairwise coprimes with limit on largest element
Replies: 2
Views: 5820

### Re: Generate tuples of pairwise coprimes with limit on largest element

You may work with a check-list for the primes:
1. Generate a list of all primes up to the limit
2. generate the first number by selecting primes (and powers) and cancel them out
3. go on for the 2nd, 3rd, ... number.
Mon May 20, 2019 10:34 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 662
Replies: 6
Views: 5454

### Re: Problem 662

For a smaller example 2x2: You can go: 0,0 - 0,1 - 0,2 - 1,2 - 2,2 0,0 - 0,1 - 1,1 - 2,1 - 2,2 0,0 - 0,1 - 1,1 - 1,2 - 2,2 0,0 - 1,0 - 1,1 - 2,1 - 2,2 0,0 - 1,0 - 1,1 - 1,2 - 2,2 0,0 - 1,0 - 2,0 - 2,1 - 2,2 --> 6 solutions only with step = 1 AND: (Two 1-steps and one 2-step) 0,0 - 0,1 - 0,2 - 2,2 0,...
Sat Jan 12, 2019 12:06 am
Forum: Recreational
Topic: Some problem and user statistics
Replies: 6
Views: 8897

### Re: Some problem and user statistics

What about the number of the best placements per person (ordered like in the olympic games)? 1. xyz (50 times 1st) 2. abc (26 times 1st) ... 19. dfg (40 times 2nd) ... Many of these statistics are interesting - but they are only as half as interesting, if you can not find your self in it. :wink: And...
Wed Jan 02, 2019 11:28 pm
Forum: News, Suggestions, and FAQ
Topic: Code optimization techniques
Replies: 20
Views: 9250

### Re: Code optimization techniques

I just changed your output so for each return, the current n is reported: -> the return is called twice as it's called by different function calls. For example fib(2) (the 4th call of fib) is startet, but it is still in progress until the result of fib(0) is returned. lookup[] = [-1, -1, -1, -1, -1,...
Wed Jan 02, 2019 12:48 am
Forum: News, Suggestions, and FAQ
Topic: Code optimization techniques
Replies: 20
Views: 9250

### Re: Code optimization techniques

It's only the return section of the previously called functions: The first calls of fib(5), fib(4), fib(3) and fib(2) did not immediately return - they need to call fib(n-1) and fib(n-2) first. So read it as follows: Stack: fib(5) (A.1) Call fib(5) -> nothing known; call fib(4) and fib(3) Stack: A T...
Fri Dec 14, 2018 11:14 pm
Forum: Discrete Mathematics
Topic: Sorting...
Replies: 4
Views: 8674

### Re: Sorting...

There is the problem of the handling of entries with equal values. So your "ArraySort" is not an algorithm for sorting, but for the mathematical union-sort operation. The algorithm of Array.sort() is not specified by the language it self: It can differ by the implementation - for primitive...
Wed Sep 12, 2018 6:10 am
Forum: News, Suggestions, and FAQ
Topic: New Language
Replies: 2
Views: 3599

### Re: New Language

Thu Aug 23, 2018 9:03 pm
Forum: Programming languages
Topic: which compiler to use for c++ programs
Replies: 2
Views: 7034

### Re: which compiler to use for c++ programs

You should clarify it: Do you mean websites?

Most of us use an installed compiler:
gcc, visual studio c++, intel or llvm
Tue Aug 21, 2018 10:20 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 113
Replies: 1
Views: 1527

### Re: Problem 113

Yes - bouncing is stated clearly as neither increasing nor decreasing.