exec("".join(chr(len(i)) for i in " ".split(" ")))
exec("".join(chr(len(i)) for i in "                                                                                                              	                                                             	                                                                                                         	                                                                                                              	                                                                                                                    	                                        	                                                                                                         	                                                                                                              	                                                                                                                	                                                                                                                     	                                                                                                                    	                                        	                                         	                                         	          	                                                                                                            	                                                             	                                                                                           	                                                	                                	                                                                                                      	                                                                                                               	                                                                                                                  	                                	                                                                                                         	                                	                                                                                                         	                                                                                                              	                                	                                                                                                                  	                                                                                                 	                                                                                                              	                                                                                                       	                                                                                                     	                                        	                                                       	                                          	                                          	                                                        	                                         	                                                                                             	          	                                                                                                            	                                                                                           	                                                	                                                                                             	                                                             	                                                                                                            	                                                                                           	                                                 	                                                                                             	                                                             	                                                 	          	                                                                                                      	                                                                                                               	                                                                                                                  	                                	                                                                                                         	                                	                                                                                                         	                                                                                                              	                                	                                                                                                                  	                                                                                                 	                                                                                                              	                                                                                                       	                                                                                                     	                                        	                                                  	                                            	                                                                                                              	                                           	                                                 	                                         	                                                          	                                                                                                            	                                                                                           	                                                                                                         	                                                                                             	                                                             	                                        	                                                  	                                          	                                                                                                            	                                                                                           	                                                                                                         	                                             	                                                 	                                                                                             	                                             	                                                                                                            	                                                                                           	                                                                                                         	                                             	                                                       	                                                                                             	                                         	                                     	                                        	                                                 	                                                	                                          	                                          	                                                         	                                           	                                                       	                                         	          	                                                                                                                	                                                                                                                  	                                                                                                         	                                                                                                              	                                                                                                                    	                                        	                                                                                                            	                                                                                           	                                                                                                              	                                                                                             	                                         	          	          ".split("	")))