diff --git a/du4/program.c b/du4/program.c
index dcc844c..00a1dba 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -52,8 +52,12 @@ double compare_percent(double a, double b, double eps)
 int main()
 {
     char str[100][100];
-  	char b ;
+  	char b;
+  	int quan =1;
   	for(int i =0;fgets(str[i],100,stdin);i++){
+  	    if(str[i][0]=='\n'){
+  	        break;
+  	    }
     	char *new_str = compactString(str[i],strlen(str[i]));
     	double first =-5,second =-5,res=-5;
     	char c='E';
@@ -70,8 +74,9 @@ int main()
     	}
     	else{
     	    printf("ZLE\n");
-   	 }
+   	    }
     
 }
+
     return 0;
 }
\ No newline at end of file