### DEAMN's blog

By DEAMN, history, 7 weeks ago,

who knows from what problem these examples?

• Input
• 3 5 3
• 1<2
• 2<4
• 3=5
• Output

• 1
• 2
• ?
• 3
• ?

• -20

By DEAMN, history, 2 months ago,
• I can't think of a DP for this task help plz Find the number of sequences (a1, a2,..., an) such that a[i]^2 + a[i + 1]^2 + ... + a[n]^2 = k a[i] <= a[i + 1] <= ... <= a[n]

• T is testcase

• n is quantity of number
• k is a[i]^2 + a[i + 1]^2 + ... + a[n]^2 = k
• 1 <= T <= 1e5

• 1 <= n <= 100
• 1 <= k <= 5000
• example
• input
• 1
• 4 243
• output
• 9
• Explanation

• first 1 1 4 15 -> (1 * 1) + (1 * 1) + (4 * 4) + (15 * 15) = 243 — second 1 3 8 13 — third 1 7 7 12 — fouth 3 3 9 12 — fifth 3 4 7 13 — sixth 3 7 8 11 — seventh 4 5 9 11 — eighth 5 5 7 12 — nineth 7 7 8 9

• +23

By DEAMN, history, 5 months ago,

Hello Codeforces For some reason, sabtask 4 does not pass for me this problem this code, if you find my mistake, I ask you to write to me. Thank you in advance!

I wonder why minus the contribution? I am amazed by people

• -26

By DEAMN, history, 5 months ago,

Hello Codeforces! I need help. I can't solve this problem for 24 points (this problem), if anyone has an idea, you can write a comment. Thank you in advance