sy13\sy1301.cpp ....\sy1302.cpp ....\sy1303.cpp ....\sy1304.cpp ...4\stud1.txt ....\stud2.txt ....\prime.txt ....\prime.dat ....\realnum.txt ....\result.txt ....\data.txt ....\sy1401.cpp ....\sy1402.cpp ....\sy1401_1.cpp ....\sy1403.cpp ....\sy1404.cpp ...2\test.cpp ....\sy1201.cpp ....\sy1202_1.cpp ....\sy1202.cpp sy13 sy14 sy12