diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..f1f9efd
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,382 @@
+#include <iostream>
+#include <string>
+#include <fstream>
+#include <algorithm>
+#include "HRD_cal.h"
+#include "HRD_analy.h"
+#include "HRD_group.h"
+#include "HRD_statistic.h"
+using namespace std;
+
+ofstream File_Output;
+
+unsigned long long checked_code;
+
+bool code_check(string str) {
+	HRD_cal cal;
+	char code_str[10];
+	if (str.length() != 9) {
+		return false;
+	}
+	for (unsigned int i = 0; i < str.length(); i++) {
+        code_str[i] = str[i];
+	}
+    code_str[10] = '\0';
+    checked_code = cal.Change_int(code_str);
+    return cal.Check_Code(checked_code);
+}
+
+void cal_case(string str) {
+    unsigned long long code;
+    vector <unsigned long long> dat;
+	if (code_check(str) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+    HRD_cal cal;
+    code = checked_code;
+    cout << "Start code: " << cal.Change_str(code) << endl;
+    dat = cal.Calculate(code);
+    if (dat.size() == 0) {
+        cout << "no solution" << endl;
+    } else {
+        cout << "At least need " << dat.size() - 1 << " step:" << endl;
+    }
+    for (unsigned int i = 0; i < dat.size(); i++) {
+        cout << i << ": " << cal.Change_str(dat[i]) << endl;
+    }
+    cout << endl;
+}
+
+void cal_case(string str, string File_name) {
+    unsigned long long code;
+    vector <unsigned long long> dat;
+	if (code_check(str) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+    HRD_cal cal;
+    code = checked_code;
+    cout << "Start code: " << cal.Change_str(code) << endl;
+    dat = cal.Calculate(code);
+    if (dat.size() == 0) {
+        cout << "no solution" << endl;
+    } else {
+        cout << "At least need " << dat.size() - 1 << " step" << endl;
+    }
+    File_Output.open(File_name);
+    cout << "Data save at " << File_name << endl;
+    File_Output << dat.size() - 1 << endl;
+    for (unsigned int i = 0; i < dat.size(); i++) {
+        File_Output << cal.Change_str(dat[i]);
+        if (i + 1 != dat.size()) {
+            File_Output << endl;
+        }
+    }
+    cout << endl;
+    File_Output.close();
+}
+
+void cal_target(string str_1, string str_2) {
+    unsigned long long code, target;
+    vector <unsigned long long> dat;
+	if (code_check(str_1) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+	code = checked_code;
+	if (code_check(str_2) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+	target = checked_code;
+    HRD_cal cal;
+    cout << "Start code: " << cal.Change_str(code) << endl;
+    cout << "Target code: " << cal.Change_str(target) << endl;
+    dat = cal.Calculate(code, target);
+    if (dat.size() == 0) {
+        cout << "no solution" << endl;
+    } else {
+        cout << "At least need " << dat.size() - 1 << " step:" << endl;
+    }
+    for (unsigned int i = 0; i < dat.size(); i++) {
+        cout << i << ": " << cal.Change_str(dat[i]) << endl;
+    }
+    cout << endl;
+}
+
+void cal_target(string str_1, string str_2, string File_name) {
+    unsigned long long code, target;
+    vector <unsigned long long> dat;
+	if (code_check(str_1) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+	code = checked_code;
+	if (code_check(str_2) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+	target = checked_code;
+    HRD_cal cal;
+    cout << "Start code: " << cal.Change_str(code) << endl;
+    cout << "Target code: " << cal.Change_str(target) << endl;
+    dat = cal.Calculate(code, target);
+    if (dat.size() == 0) {
+        cout << "no solution" << endl;
+    } else {
+        cout << "At least need " << dat.size() - 1 << " step" << endl;
+    }
+    File_Output.open(File_name);
+    cout << "Data save at " << File_name << endl;
+    File_Output << dat.size() - 1 << endl;
+    for (unsigned int i = 0; i < dat.size(); i++) {
+        File_Output << cal.Change_str(dat[i]);
+        if (i + 1 != dat.size()) {
+            File_Output << endl;
+        }
+    }
+    cout << endl;
+    File_Output.close();
+}
+
+void cal_group(string str, string File_name) {
+    unsigned long long code;
+    vector <unsigned long long> dat;
+	if (code_check(str) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+    HRD_cal cal;
+    code = checked_code;
+    cout << "Start code: " << cal.Change_str(code) << endl;
+    dat = cal.Calculate_All(code);
+    sort(dat.begin(), dat.end());
+    cout << "Group size: " << dat.size() << endl;
+    File_Output.open(File_name);
+    cout << "Data save at " << File_name << endl;
+    for (unsigned int i = 0; i < dat.size(); i++) {
+        File_Output << cal.Change_str(dat[i]);
+        if (i + 1 != dat.size()) {
+            File_Output << endl;
+        }
+    }
+    cout << endl;
+    File_Output.close();
+}
+
+void analy_case(string str, string File_name, bool quiet) {
+    unsigned long long code;
+    vector <unsigned long long> dat;
+	if (code_check(str) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+    HRD_analy analy;
+    code = checked_code;
+    cout << "Start code: " << analy.Change_str(code) << endl;
+    analy.quiet = quiet;
+    analy.Analyse_Case(code);
+    if (quiet == true) {
+        cout << "Output into " << File_name << "...";
+    }
+    analy.Output_Detail(File_name);
+    if (quiet == true) {
+        cout << "done" << endl;
+    }
+    cout << endl;
+}
+
+void analy_group(string str, string File_name_1, string File_name_2, bool is_all) {
+    unsigned long long code;
+    vector <unsigned long long> dat;
+	if (code_check(str) == false) {
+		cout << "code error" << endl;
+		cout << endl;
+		return;
+	}
+    HRD_group group;
+    code = checked_code;
+    cout << "Start code: " << group.Change_str(code) << endl;
+    group.Batch_Analyse(code, File_name_1, File_name_2, is_all);
+    cout << "Data save at " << File_name_1 << " and " << File_name_2 << endl;
+    cout << endl;
+}
+
+void find_all(string File_name) {
+    HRD_statistic statistic;
+    cout << "Warning: It will consume nearly 2GB of memory, please make sure there is enough memory!" << endl;
+    cout << "Press ENTER to start...";
+    cin.get();
+    statistic.Find_All_Case(File_name);
+    cout << "Data save at " << File_name << endl;
+    cout << endl;
+}
+
+void find_all_code(string File_name) {
+    HRD_statistic statistic;
+    cout << "Warning: It will consume nearly 2GB of memory, please make sure there is enough memory!" << endl;
+    cout << "Press ENTER to start...";
+    cin.get();
+    statistic.Make_main_table(File_name);
+    cout << "Data save at " << File_name << endl;
+    cout << endl;
+}
+
+void show_help() {
+    cout << "(version: v0.0)" << endl;
+    cout << "Usage of HRD_engine:" << endl;
+    cout << endl;
+    cout << "  --cal <code> [file_name]" << endl;
+    cout << "    [file_name]: for output the result" << endl;
+    cout << "    Purpose: find the min step solution from <code>" << endl;
+    cout << "    exp: ./engine --cal 1A9BF0C00" << endl;
+    cout << "         ./engine --cal 1A9BF0C00 demo.txt" << endl;
+    cout << endl;
+    cout << "  --cal-target <code> <target> [file_name]" << endl;
+    cout << "    [file_name]: for output the result" << endl;
+    cout << "    Purpose: find the min step path from <code> to <target>" << endl;
+    cout << "    exp: ./engine --cal-target 4FEA13400 43EA73400" << endl;
+    cout << "         ./engine --cal-target 4FEA13400 43EA73400 demo.txt" << endl;
+    cout << endl;
+    cout << "  --group <code> <file_name>" << endl;
+    cout << "    <file_name>: for output the result" << endl;
+    cout << "    Purpose: find all cases in the group where <code> loacted" << endl;
+    cout << "    exp: ./engine --group 4FEA13400 demo.txt" << endl;
+    cout << endl;
+    cout << "  --analy <code> <file_name>" << endl;
+    cout << "    <file_name>: for output the result" << endl;
+    cout << "    Purpose: analyse the case with <code> " << endl;
+    cout << "    exp: ./engine --analy 1A9BF0C00 demo.txt" << endl;
+    cout << endl;
+    cout << "  --analy-quiet <code> <file_name>" << endl;
+    cout << "    Purpose: the same function with analy but don't show the process" << endl;
+    cout << "    exp: ./engine --analy-quiet 1A9BF0C00 demo.txt" << endl;
+    cout << endl;
+    cout << "  --analy-group <code> <file_name_1> <file_name_2>" << endl;
+    cout << "    <file_name_1>: for output the result of \"farthest\"" << endl;
+    cout << "    <file_name_2>: for output the result of \"solution\"" << endl;
+    cout << "    Purpose: analyse all cases in the group where <code> loacted" << endl;
+    cout << "    exp: ./engine --group 1A9BF0C00 farthest.csv solution.csv" << endl;
+    cout << endl;
+    cout << "  --analy-group-all <code> <file_name_1> <file_name_2>" << endl;
+    cout << "    Purpose: the same function with analy-group but more output all solution cases" << endl;
+    cout << "    exp: ./engine --group-all 1A9BF0C00 farthest.csv solution.csv" << endl;
+    cout << endl;
+    cout << "  --all <file_name>" << endl;
+    cout << "    Purpose: find all cases from klotski game with detail" << endl;
+    cout << "    exp: ./engine --all main.csv" << endl;
+    cout << endl;
+    cout << "  --all-code <file_name>" << endl;
+    cout << "    Purpose: find all cases from klotski game only with code" << endl;
+    cout << "    exp: ./engine --all-code All_Case.txt" << endl;
+    cout << endl;
+    cout << "  --help" << endl;
+    cout << "    Purpose: show the usage" << endl;
+    cout << "    exp: ./engine --help" << endl;
+    cout << endl;
+}
+
+int main(int argc, char* argv[]) {
+	cout << "Klotski engine by Dnomd343" << endl;
+	if (argc <= 1) {
+        cout << "no parameter" << endl;
+        cout << "You can try to use \"--help\" for more information" << endl;
+        cout << endl;
+        return 0;
+	}
+	string parameter;
+	parameter = argv[1];
+	if (parameter == "--cal") {
+		if (argc == 3) {
+            cal_case(argv[2]);
+		} else if (argc == 4) {
+            cal_case(argv[2], argv[3]);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--cal-target") {
+		if (argc == 4) {
+            cal_target(argv[2], argv[3]);
+		} else if (argc == 5) {
+            cal_target(argv[2], argv[3], argv[4]);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--group") {
+		if (argc == 4) {
+            cal_group(argv[2], argv[3]);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--analy") {
+        if (argc == 4) {
+            analy_case(argv[2], argv[3], false);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--analy-quiet") {
+		if (argc == 4) {
+            analy_case(argv[2], argv[3], true);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--analy-group") {
+		if (argc == 5) {
+            analy_group(argv[2], argv[3], argv[4], false);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+    } else if (parameter == "--analy-group-all") {
+		if (argc == 5) {
+            analy_group(argv[2], argv[3], argv[4], true);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--all") {
+		if (argc == 3) {
+            find_all(argv[2]);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--all-code") {
+		if (argc == 3) {
+            find_all_code(argv[2]);
+		} else {
+            cout << "parameter error" << endl;
+            cout << endl;
+            return 0;
+		}
+	} else if (parameter == "--help") {
+		show_help();
+	} else {
+		cout << "unknow parameter" << endl;
+        cout << "You can try to use \"--help\" for more information" << endl;
+        cout << endl;
+    }
+	return 0;
+}