diff --git a/du5/program.c b/du5/program.c
index ae1bf7a..8d27ae6 100644
--- a/du5/program.c
+++ b/du5/program.c
@@ -1,7 +1,7 @@
 #include<stdio.h>
 #include <stdlib.h>
 #include <string.h>
-
+#include<ctype.h>
 
 struct person{
 	int score;
@@ -38,11 +38,16 @@ int main(){
 	int score=0;
 	int c =0;
 	char str[100];
+	char digit[5];
 	while(fgets(str,100,stdin)){
 	    if(str[0]=='\n'){
 	        break;
 	    }
-	    sscanf(str,"%d %[^\t\n]",&score,name);
+	    sscanf(str,"%s %[^\t\n]",digit,name);
+	    if(isalpha(digit[0])!=0){
+	        break;
+	    }
+	    int score = atoi(digit);
 		PersonList[c].score = score;
 	    strcpy(PersonList[c].name ,name);
 		c++;