Nguyen Gia An
Giới thiệu về bản thân
bananananananananananananannanannanananananannananannanananananananananananananananananananananananananananananananananananananananananananannanananananananananananananana
bananananananananannananananananananananananananananananananananananannananananannananannanananananananananananannananananananananananananananananananananannanananan
bababababababababababbabababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababababa
bananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananananan
2400-234=2166
5900+4100