diff --git a/goodjack.cpp b/goodjack.cpp
index 890fb0a..a198414 100644
--- a/goodjack.cpp
+++ b/goodjack.cpp
@@ -1 +1,51 @@
-//沒有意義
+#include <iostream>
+using namespace std;
+int main() {
+    int i=0;
+    int p=0;
+    float a[7] = {0};
+    cout << "請輸入本次報考人數: ";
+    cin >> p;
+    float s[p][8];
+        for( i=1; i<=p; i++){
+            cout << "請輸入國文成績: "; 
+            cin >> s[i][1];
+            cout << "請輸入英文成績: ";
+            cin >> s[i][2];
+            cout << "請輸入數學成績: ";
+            cin >> s[i][3];
+            cout << "請輸入自然成績: ";
+            cin >> s[i][4];
+            cout << "請輸入社會成績: ";
+            cin >> s[i][5];
+            s[i][6] = ( s[i][1] + s[i][2] + s[i][3] + s[i][4]+ s[i][5] );
+            s[i][7] = ( s[i][1] + s[i][2] + s[i][3] + s[i][4]+ s[i][5] ) / 5;
+            cout << "個人總分=" << s[i][6] << "分\n";
+            cout << "個人平均=" << s[i][7] << "分\n\n";
+        if (i == p ){
+            for(int j=1 ; j<=p ;j++){
+                a[1] = a[1] + s[j][1];
+                a[2] = a[2] + s[j][2];
+                a[3] = a[3] + s[j][3];
+                a[4] = a[4] + s[j][4];
+                a[5] = a[5] + s[j][5];
+                a[6] = a[6] + s[j][6];
+            }
+        }
+    }
+    cout << "各科總分:\n";
+    cout << "國文=" << a[1] << "分\n";
+    cout << "英文=" << a[2] << "分\n";
+    cout << "數學=" << a[3] << "分\n";
+    cout << "自然=" << a[4] << "分\n";
+    cout << "社會=" << a[5] << "分\n";
+    cout << "五科總分=" << a[6] << "分\n\n";
+
+    cout << "各科總平均:\n";
+    cout << "國文=" << a[1]/p << "分\n";
+    cout << "英文=" << a[2]/p << "分\n";
+    cout << "數學=" << a[3]/p << "分\n";
+    cout << "自然=" << a[4]/p << "分\n";
+    cout << "社會=" << a[5]/p << "分\n";
+    cout << "五科總平均=" << a[6]/(p*5) << "分\n";
+    }