diff --git a/du1/program.c b/du1/program.c
new file mode 100644
index 0000000..0fd4159
--- /dev/null
+++ b/du1/program.c
@@ -0,0 +1,24 @@
+#include<stdio.h>
+
+   int main(){
+        int counter=0, Sym;
+        char OutSym;
+
+        while(1){
+                Sym=getchar();
+                if(Sym=='\n'){
+                        counter++;
+                }
+                if(Sym==EOF){
+                        //counter++;
+                        break;
+                }
+                else if(Sym<='Z'&&Sym>='A')Sym +=32;
+                else if(Sym<='z'&&Sym>='a')Sym-=32;
+                //counter++;
+                OutSym=Sym;
+                putchar(OutSym);
+        }
+        printf("\nPočet riadkov: %d\n",counter);
+   return 0;
+}             
\ No newline at end of file
diff --git a/du2/program.c b/du2/program.c
new file mode 100644
index 0000000..85e879a
--- /dev/null
+++ b/du2/program.c
@@ -0,0 +1,47 @@
+#include<stdio.h>
+#include<string.h>
+#define VELKOST_POLA 90
+
+
+int main(){
+
+    int value = 0;
+    int count = 0;
+
+    int pole[VELKOST_POLA];
+    memset(pole,0,VELKOST_POLA*(sizeof(int)));
+
+    int max_hodnota=0;
+    int idx=0;
+    while (1){
+        int r=scanf("%d",&value);
+        if(r!=1 || idx==VELKOST_POLA || value < 0){
+            break;
+        }
+        pole[idx]=value;
+        if (pole[idx] > max_hodnota){
+            max_hodnota = pole[idx];
+        }
+        idx++;
+        count++;
+    }
+
+    if (count==0){
+        printf("Chyba: Málo platných hodnôt.\n");
+        return 0;
+    }
+
+    for(int i=0; i<VELKOST_POLA;i++){
+        if(pole[i]>0){
+            printf("Súťažiaci č. %d vypil %d pohárov.\n", i+1, pole[i]);
+        }
+    }
+
+    for(int i=0; i<VELKOST_POLA;i++){
+        if(pole[i]==max_hodnota){
+            printf("Výherca je súťažiaci %d ktorý vypil %d pohárov.\n",i+1, max_hodnota);
+        }
+    }
+
+    return 0;
+}