d = {"Tetrahedron": 4, "Cube": 6, "Octahedron": 8, "Dodecahedron": 12, "Icosahedron": 20}
n = int(input())
ans = 0
i = 0
while i < n:
s = input()
ans += d.get(s,0)
i += 1
print(ans)
265A - Colorful Stones (Simplified Edition) | 296A - Yaroslav and Permutations |
967B - Watering System | 152A - Marks |
1398A - Bad Triangle | 137A - Postcards and photos |
1674D - A-B-C Sort | 334A - Candy Bags |
855A - Tom Riddle's Diary | 1417A - Copy-paste |
1038A - Equality | 1061A - Coins |
1676E - Eating Queries | 1447A - Add Candies |
1721D - Maximum AND | 363C - Fixing Typos |
1401A - Distance and Axis | 658A - Bear and Reverse Radewoosh |
1721E - Prefix Function Queries | 977E - Cyclic Components |
1140D - Minimum Triangulation | 75C - Modified GCD |
1722A - Spell Check | 1722B - Colourblindness |
1722D - Line | 1722C - Word Game |
1722G - Even-Odd XOR | 552E - Vanya and Brackets |
933A - A Twisty Movement | 1722F - L-shapes |