diff --git a/du1/program b/du1/program
new file mode 100755
index 0000000..790b74a
Binary files /dev/null and b/du1/program differ
diff --git a/du1/program.c b/du1/program.c
new file mode 100644
index 0000000..f3d90e1
--- /dev/null
+++ b/du1/program.c
@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+
+#define LINE_SIZE 100
+#define MAXIT 100
+
+struct pizza{
+	float prize;
+	char name[LINE_SIZE];
+};
+
+char hacker_script(char c){
+	c = tolower((unsigned char)c);
+	switch(c){
+	case '0': return 'o';
+        case '1': return 'i';
+        case '2': return 'z';
+        case '3': return 'e';
+        case '4': return 'a';
+        case '5': return 's';
+        case '6': return 'b';
+        case '7': return 't';
+        case '8': return 'b';
+        case '9': return 'q';
+        default: return c;}
+}
+
+
+void normalize(const char *source, char *dest){
+	int i =0;
+	while(source[i]!='\0'){
+		dest[i]= hacker_script(source[i]);
+		i++;
+	}
+	dest[i]='\0';
+}
+
+
+
+
+
+
+int read_pizza(struct pizza *item){
+	char line_1[LINE_SIZE];
+	char line_2[LINE_SIZE];
+
+	if (fgets(line_1,LINE_SIZE,stdin)==NULL) return 0;
+	if (fgets(line_2,LINE_SIZE,stdin)==NULL) return 0;
+	
+	line_1[strcspn(line_1,"\n")] = '\0';
+	line_2[strcspn(line_2,"\n")] = '\0';
+	
+	float price = 0.0;
+	if (sscanf(line_2, "%f", &price)!=1) return 0;
+
+	strcpy(item->name, line_1);
+	item->prize = price;
+
+	return 1;
+}
+
+
+int main(){
+	char search[LINE_SIZE];
+	char normal_search[LINE_SIZE];
+
+	struct pizza list[MAXIT];
+	int cnt = 0;
+	
+	printf("Zadaj hladanu surovinu:\n");
+	if (fgets(search, LINE_SIZE, stdin)==NULL) return 0;
+	search[strcspn(search,"\n")] = '\0';
+
+	normalize(search, normal_search);
+	
+	printf("Zadaj jedalny listok:\n");
+
+
+	while(cnt<MAXIT&&read_pizza(&list[cnt])){ cnt++;}
+	for (int i =0;i<cnt; i++){
+		char normal_name[LINE_SIZE];
+		normalize(list[i].name, normal_name);
+		
+		if (strstr(normal_name, normal_search) != NULL) {
+            	printf("%s\n", list[i].name);
+            	printf("%.2f\n", list[i].prize);
+        	}
+
+	}
+	printf("Nacitanych %d poloziek.\n", cnt);
+	return 0;
+}
diff --git a/du1/vstup.txt b/du1/vstup.txt
new file mode 100644
index 0000000..4210fa1
--- /dev/null
+++ b/du1/vstup.txt
@@ -0,0 +1,7 @@
+bryndz
+8rynd20va P1zza
+7.50
+Ja8lkov4 Pizza
+6.50
+5penatov3 kal2on3
+8.20