ultima problemă
grupă: micăsursă: OMI 2016
ultimul articol
autor: Prof. Radu Vişinescu
ultimul software
autor: Prof. Emanuela Cerchez
.campion
sir23
Timp maxim de executie/test:
0.1
secunde
Memorie totala disponibila/stiva:
16
MB/1 MB
Fie n
un numar natural.
Numim sir 2-3-monoton de lungime n
un sir s1 , s2 ,
..., sn , format din
n elemente ale multimii {1 ,
2 , ..., n }
care verifica urmatoarele doua relatii:
1. si <si+2 ,
pentru orice i din {1 ,
2 , ..., n-2 }
2. si <si+3 ,
pentru orice i din {1 ,
2 , ..., n-3 }
Cerinta
Scrieti un program care sa determine numarul de siruri 2-3-monotone
de lungime n .
Date
de intrare
Fisierul de intrare sir23.in
contine un singur numar, lungimea n .
Date
de iesire
Fisierul de iesire sir23.out
va contine pe prima linie ultimele 4 cifre din numarul de siruri 2-3-monotone
de lungime n .
Restrictii
n numar natural, 1 <= n <= 100
In cazul în care ultimele 4 cifre din numarul de siruri 2-3-monotone încep cu zerouri, acestea nu vor fi afisate.
Exemple
sir23.in
sir23.out
sir23.in
sir23.out
2
4
3
9
prof. Emanuela Cerchez
Liceul de Informatica "Grigore Moisil " Iasi
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