if cheaters' ratings are still counted even though they have solved 0 problems.

| # | User | Rating |
|---|---|---|
| 1 | Benq | 3676 |
| 2 | Kevin114514 | 3657 |
| 3 | jiangly | 3638 |
| 4 | turmax | 3442 |
| 5 | tourist | 3380 |
| 6 | Um_nik | 3353 |
| 7 | strapple | 3350 |
| 8 | squareOf105 | 3346 |
| 9 | heuristica | 3322 |
| 10 | maroonrk | 3310 |
| # | User | Contrib. |
|---|---|---|
| 1 | Qingyu | 158 |
| 2 | nik_exists | 150 |
| 2 | maspy | 150 |
| 4 | AmShZ | 144 |
| 5 | Um_nik | 143 |
| 6 | Errichto | 139 |
| 7 | adamant | 137 |
| 8 | BledDest | 135 |
| 9 | maroonrk | 133 |
| 10 | qwexd | 130 |
if cheaters' ratings are still counted even though they have solved 0 problems.

The problem is calculate nCk with n <= 10^18, k <= 10^6 and mod = 10^9 + 7. Can anyone give me some hints or pesudo code. Thanks
107615789 who can explain me ! Thank you.
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