属于这两个集合的第一个数字：
515,535,626,848,898,1414,2828,3232,4848,5252,5454,7272,8484,9595,9898,23232,40404,42424,43434,45454,46464,47474,53535,58585,59595,63636,64646,82828,84848,101010,121212,242424,252525,303030,363636,404040,484848,545454,606060,646464,747474,828282,868686,949494,969696,989898,2020202,2121212,2525252,2626262,2727272,2929292,4141414,4343434,4646464,4747474,4848484,4949494,5050505,5151515,5252525,5353535,5656565,5757575,5959595,6060606,6161616,6363636,6464646,6565656,6767676,8080808,8181818,8383838,8484848,8585858,8686868,8787878,8989898.