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0011. Summa
Time limit : 1000 ms
Memory limit : 64 mb
1 dan n gacha sonlar berilgan. Berilgan sonlarni yig`indisini toping.
Kiruvchi ma’lumotlar:
Bitta butun son $n (1\le n\le 100)$
Chiquvchi ma’lumotlar:
Bitta son masala yechimi.
| Input |
|---|
| 4 |
| Output |
| 10 |
| Input |
|---|
| 9 |
| Output |
| 45 |