diff --git a/QUSTOJ/1372.cpp b/QUSTOJ/1372.cpp
new file mode 100644
index 0000000..8165fb0
--- /dev/null
+++ b/QUSTOJ/1372.cpp
@@ -0,0 +1,14 @@
+#include <cstdio>
+int main()
+{
+    int n;
+    scanf("%d",&n);
+    int f=0;
+    int m=3;
+    for(int i=1;i<=n;i++)
+    {
+        f=(f+m)%i;
+    }
+    printf("%d\n",f+1);
+    return 0;
+}