[Merged by Bors] - feat(archive/imo) : Add solution to IMO 1994 Q1 #10171
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antoinelab01
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jcommelin
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Nov 4, 2021
archive/imo/imo1994_q1.lean
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| rw this, clear this, | ||
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| -- The rest is a simple calculation by rearranging one of the two sums | ||
| calc 2 * ∑ i : fin (m+1), a i = ∑ i : fin (m+1), a i + ∑ i : fin (m+1), a i : two_mul _ |
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| calc 2 * ∑ i : fin (m+1), a i = ∑ i : fin (m+1), a i + ∑ i : fin (m+1), a i : two_mul _ | |
| calc 2 * ∑ i : fin (m+1), a i | |
| = ∑ i : fin (m+1), a i + ∑ i : fin (m+1), a i : two_mul _ |
Please reformat the other lines as well. Hopefully they'll fit in ≤ 100 chars that way.
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@antoinelab01 I pushed some golfs and tricks to the branch |
Sorry, I'm still not very familiar with GitHub... I don't find this branch, where can I see it? |
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You can see the diff here: imo1994_q1...imo1994_q1_jmc |
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Thanks. How do I merge the golf you did to my pull request? |
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@antoinelab01 Are you familiar with the command line? In your copy of mathlib, make sure you have checked out your branch: git checkout imo1994_q1
git fetch # pull updates from github
git merge origin/imo1994_q1_jmc # merge the other branch into yours |
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IMO 1994 Q1 Co-authored-by: Johan Commelin <johan@commelin.net>
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Pull request successfully merged into master. Build succeeded: |
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ericrbg
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IMO 1994 Q1 Co-authored-by: Johan Commelin <johan@commelin.net>
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IMO 1994 Q1