Professor And Security

Professor thinks that all the heists that have been done so far were small, and now he wants to plan something bigger. According to this plan, the team will rob $S$ number of banks from every city and also, he plans to rob $K$ cities. So he asks Raquel to gather data about the level of security in each bank. Raquel gives him a matrix with $K$ rows and $S+1$ columns. Each row contains $S$ integer