diff --git a/QUSTOJ/1513.cpp b/QUSTOJ/1513.cpp
new file mode 100644
index 0000000..85ff681
--- /dev/null
+++ b/QUSTOJ/1513.cpp
@@ -0,0 +1,37 @@
+//Problem1513
+#include <cstdio>
+#include <cstring>
+using namespace std;
+char buff[256];
+int main()
+{
+	while(scanf("%s",buff)==1)
+	{
+		int len=strlen(buff);
+		for(int i=0;i<len;i++)
+		{
+			if(buff[i]>='A'&&buff[i]<='Z')
+			{
+				buff[i]=(buff[i]-'A'+1)%26+'a';
+			}
+			else if(buff[i]>='a'&&buff[i]<='z')
+			{
+				char ans;
+				switch(buff[i])
+				{
+					case 'a':case 'b':case 'c':ans='1';break;
+					case 'd':case 'e':case 'f':ans='2';break;
+					case 'g':case 'h':case 'i':ans='3';break;
+					case 'j':case 'k':case 'l':ans='4';break;
+					case 'm':case 'n':case 'o':ans='5';break;
+					case 'p':case 'q':case 'r':case 's':ans='6';break;
+					case 't':case 'u':case 'v':ans='7';break;
+					case 'w':case 'x':case 'y':case 'z':ans='8';break;
+				}
+				ans++;
+				buff[i]=ans;
+			}
+		}
+		printf("%s\n",buff);
+	}
+}