'commit'

TangDou/LanQiaoBei/LanQiao14STEMA20230212/8.cpp

@@ -1,17 +1,24 @@
 #include <iostream>
 using namespace std;
+int n, cnt;
+
 int main() {
-    int n, cnt = 0;
     cin >> n;
-    cnt = n / 3;
     if (n == 2)
         cnt = -1;
     else if (n == 4)
         cnt = 4;
+    else if (n == 5)
+        cnt = 3;
+    else if (n == 7)
+        cnt = 3;
+    else if (n % 3 == 0)
+        cnt = n / 3;
     else if (n % 3 == 1)
-        cnt += 1;
+        cnt = (n - 7) / 3 + 3;
     else if (n % 3 == 2)
-        cnt += 2;
+        cnt = (n - 5) / 3 + 3;
+
     cout << cnt << endl;
     return 0;
 }

TangDou/LanQiaoBei/LanQiao14STEMA20230212/8_2.cpp

@@ -1,24 +0,0 @@
-#include <iostream>
-using namespace std;
-int n, cnt;
-
-int main() {
-    cin >> n;
-    if (n == 2)
-        cnt = -1;
-    else if (n == 4)
-        cnt = 4;
-    else if (n == 5)
-        cnt = 3;
-    else if (n == 7)
-        cnt = 3;
-    else if (n % 3 == 0)
-        cnt = n / 3;
-    else if (n % 3 == 1)
-        cnt = (n - 7) / 3 + 3;
-    else if (n % 3 == 2)
-        cnt = (n - 5) / 3 + 3;
-
-    cout << cnt << endl;
-    return 0;
-}