100644 blob ae499534fa1c4347650cf4aa4a5ad25e3efe544d	Main.java
100644 blob b3cae711b90ad310db1256ba4f667669244330d7	Source.java
040000 tree 41b36dde579c54cd565d14e402f367ad62d34b3b	find
040000 tree 21ff1cc4a96ab8c5053012d507cad74fd7c018a0	scanner
040000 tree 6e0037d751ff0af747d69b908cf2f5858b8e4bcc	specification