Problem "Shortest Cycle Through a Given Edge" solved

http://rosalind.info/problems/cte/
Problem "Bellman-Ford Algorithm" solved

http://rosalind.info/problems/bf/
Problem "Negative Weight Cycle" solved

http://rosalind.info/problems/nwc/
Problem "Shortest Paths in DAG" solved

http://rosalind.info/problems/sdag/