| № | Пользователь | Рейтинг |
|---|---|---|
| 1 | tourist | 3985 |
| 2 | jiangly | 3885 |
| 3 | jqdai0815 | 3682 |
| 4 | Benq | 3580 |
| 5 | orzdevinwang | 3526 |
| 6 | ksun48 | 3506 |
| 7 | ecnerwala | 3505 |
| 8 | Radewoosh | 3457 |
| 9 | Kevin114514 | 3377 |
| 10 | gamegame | 3374 |
| Страны | Города | Организации | Всё → |
| № | Пользователь | Вклад |
|---|---|---|
| 1 | cry | 170 |
| 2 | Um_nik | 162 |
| 2 | -is-this-fft- | 162 |
| 4 | atcoder_official | 160 |
| 5 | djm03178 | 157 |
| 6 | Dominater069 | 156 |
| 7 | adamant | 154 |
| 8 | luogu_official | 153 |
| 9 | awoo | 152 |
| 10 | maomao90 | 150 |
Problem 2. Doma is blindfolded and there are 50 two-rupee coins on the table, ten of which are moons. Now these coins should be flipped as desired and divided into two forms in such a way that each cup has equal number of moons. (One side of the coin has the moon and the other the stars).
[Translated by google translate]
Divide the coins into two piles, one pile of ten coins and the other pile of forty coins, if the pile of ten coins has A moon, then the pile of ten coins has 10-A moon, and the pile of ten coins will flip over and both will have 10-A moon.
Please forgive the retarded translation software.
Divide the 50 pile into 2 different stacks one will have x moon y-x stars
other will have 50-y-x moons and x stars now flip the other stack we have equal number of moons
Looking forward for more puzzles.