调试中...
equations =
[["a","b"],["b","c"]]
values =
[2.0,3.0]
queries =
[["a","c"],["b","a"],["a","e"],["a","a"],["x","x"]]
[["a","b"],["b","c"]]
[2.0,3.0]
[["a","c"],["b","a"],["a","e"],["a","a"],["x","x"]]
[["a","b"],["b","c"],["bc","cd"]]
[1.5,2.5,5.0]
[["a","c"],["c","b"],["bc","cd"],["cd","bc"]]
[["a","b"]]
[0.5]
[["a","b"],["b","a"],["a","c"],["x","y"]]