diff --git a/QUSTOJ/1726.c b/QUSTOJ/1726.c
new file mode 100644
index 0000000..ae2634c
--- /dev/null
+++ b/QUSTOJ/1726.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main()
+{
+    int cnt=0;
+    int cash;
+    scanf("%d",&cash);
+    int amax=cash/5;
+    int bmax=cash/2;
+    int cmax=cash;
+    for(int a=1;a<=amax;a++)
+    {
+        for(int b=1;b<=bmax;b++)
+        {
+            for(int c=1;c<=cmax;c++)
+            {
+                if(5*a+2*b+c==cash)
+                {
+                    cnt++;
+                }
+            }
+        }
+    }
+    printf("%d\n",cnt);
+    return 0;
+}