Type: None Graph Theory 2-SAT Articulation/Bridge/Biconnected Component Cycles/Topological Sorting/Strongly Connected Component Shortest Path Bellman Ford Dijkstra/Floyd Warshall Euler Trail/Circuit Heavy-Light Decomposition Minimum Spanning Tree Stable Marriage Problem Trees Directed Minimum Spanning Tree Flow/Matching Graph Matching Bipartite Matching Hopcroft–Karp Bipartite Matching Weighted Bipartite Matching/Hungarian Algorithm Flow Max Flow/Min Cut Min Cost Max Flow DFS-like Backtracking with Pruning/Branch and Bound Basic Recursion IDA* Search Parsing/Grammar Breadth First Search/Depth First Search Advanced Search Techniques Binary Search/Bisection Ternary Search Geometry Basic Geometry Computational Geometry Convex Hull Pick's Theorem Game Theory Green Hackenbush/Colon Principle/Fusion Principle Nim Sprague-Grundy Number Matrix Gaussian Elimination Matrix Exponentiation Data Structures Basic Data Structures Binary Indexed Tree Binary Search Tree Hashing Orthogonal Range Search Range Minimum Query/Lowest Common Ancestor Segment Tree/Interval Tree Trie Tree Sorting Disjoint Set String Aho Corasick Knuth-Morris-Pratt Suffix Array/Suffix Tree Math Basic Math Big Integer Arithmetic Number Theory Chinese Remainder Theorem Extended Euclid Inclusion/Exclusion Modular Arithmetic Combinatorics Group Theory/Burnside's lemma Counting Probability/Expected Value Others Tricky Hardest Unusual Brute Force Implementation Constructive Algorithms Two Pointer Bitmask Beginner Discrete Logarithm/Shank's Baby-step Giant-step Algorithm Greedy Divide and Conquer Dynamic Programming
You have solved every problem from Project Euler in your head. Now it is time for a problem you might have heard of,namely The Traveling Salesperson, whose decision version is NP-complete. We consider the Traveling Salesperson problem in a 2D rectangular grid where every cell can be reached from their neighboring cells (up,down, left and right) and you can visit a cell as many times as you like (though, most of the cells aren't that interesting, so you might prefer not to visit them a lot).
Input
The first line of the input consists of a single integer T, the number of test cases. Then follow two integers X and Y , marking the width and height of the grid, respectively. Then follow Y lines with X characters, where the character 'C' is a cell and the character 'S' is the starting point.
0 < T <= 50 0 < X <= 100 0 < Y <= 100 All characters in a test case are 'C', except for exactly one, which is 'S'.
Output
For each test case, output the minimum number of steps required to make a full roundtrip of the grid, starting and ending at S, and visiting each cell at least once. Since you realize that this won't lead anywhere, finish off the output with "LOL"(without quotes) on a line of its own (one per run, not per test case).
You have solved every problem from Project Euler in your head. Now it is time for a problem you might have heard of,namely The Traveling Salesperson, whose decision version is NP-complete. We consider the Traveling Salesperson problem in a 2D rectangular grid where every cell can be reached from their neighboring cells (up,down, left and right) and you can visit a cell as many times as you like (though, most of the cells aren't that interesting, so you might prefer not to visit them a lot).