# import pprint
# import json
# gra = {"nazwa_gry":"CS",
#        "data_wydania":1999,
#        "wydawca":"Valve",
#        "gatunek":"FPS"
#     }

# with open("spis_gier.json", "r") as file:
#     spis_gier = json.load(file)

# spis_gier["spis_gier"].append(gra)
# pprint.pprint(spis_gier["spis_gier"])

# with open("spis_gier2", "w") as file:
#     json.dump(spis_gier, file, indent=4, sort_keys=True)

fib_json = {0:0,1:1}

def fibonaci(n):
    if n in fib_json:
        return fib_json[n]
    else:
        result = fibonaci(n-1) + fibonaci(n-2)
        fib_json[n] = result
        return result
    
print(fibonaci(19))