Longest Potassium Compound X80665
Write a program that reads several sequences of molecules. For each sequence, the program must print the longest molecule containing some potassium (K) atom.
Input
The input consists of several sequences of molecules. Each sequence is provided as a number n, followed by n molecules.
No molecules containing Krypon (Kr) will appear in the sequences.
Output
The output is the longest molecule containing potassium in each sequence.
If there is not such a molecule in the sequence, the output is none.
If several potassium molecules with the same length are found, the last one should be printed.
Public test cases
Input
7 KCl KI C2H4O2 AsH3 K2S4 K2Te H2O 4 K2Te C6H8O6 HK C9H8O4 4 K2S4 K2Se HK C8H12N4O3 7 KCl KCN CaOH HK H2CO3 H2O NaCl 5 FeO SiO BaSO4 CaOH H2O 7 FeS CaH C9H8O4 C8H12N4O3 AsH3 O3 K2S4
Output
K2Te K2Te K2Se KCN none K2S4
Input
5 H2O KC2N Se2K3 KCN H2O 4 C6H8O6 H2O C2H3 HCL 8 H2SO3 KCN KCl KCl KCl KS4 H2O NaCl
Output
Se2K3 none KS4
Information
- Author
- Lluís Padró
- Language
- English
- Official solutions
- Python
- User solutions
- Python