[BOJ] 설탕 배달 / S4

Author: chaeryeon823

chaeryeon823/BOJ_2839.py

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+# 설탕배달
+# S4
+
+import sys
+
+n = int(sys.stdin.readline())
+result = 0;
+while(True):
+  if(n % 5 == 0):
+    result += n/5;
+    print(int(result));
+    break;
+  else:
+    n-=3;
+    result+=1;
+  if(n < 0):
+    print("-1")
+    break;
+