diff --git a/a1/program.c b/a1/program.c
index 486f917..aaa5047 100644
--- a/a1/program.c
+++ b/a1/program.c
@@ -2,30 +2,42 @@
 #include <string.h>
 #include <stdlib.h>
 #include <stdbool.h>
-
-int main(){
-  char riadok[499][499];
-  int i, o , need = 0;
+int main()
+{
+  char riadok[999][999];
+  int i = 0;
+  int o = 0;
+  int need = 0;
   bool first;
-  while (1){
+  while (1)
+  {
     o = 0;
-    while (1){
+    while (1)
+    {
+
       riadok[i][o] = getchar();
-      if (riadok[i][o] == '\n'){
+
+      if (riadok[i][o] == '\n')
+      {
         first = true;
         need++;
         break;
       }
+
       o++;
     }
-    if (first == true && riadok[i][0] == '\n'){
+    if (first == true && riadok[i][0] == '\n')
+    {
       break;
     }
     i++;
   }
-  for (int j = 0; j < need - 1; j++){
-    for (int g = 0; g < strlen(riadok[j]); g++){
-      if (riadok[j][g] != '.' && riadok[j][g] != '1' && riadok[j][g] != '2' && riadok[j][g] != '3' && riadok[j][g] != '4' && riadok[j][g] != '5' && riadok[j][g] != '6' && riadok[j][g] != '7' && riadok[j][g] != '8' && riadok[j][g] != '9' && riadok[j][g] != '0' && riadok[j][g] != '\n' && riadok[j][g] != '\0'){
+  for (int j = 0; j < need - 1; j++)
+  {
+    for (int g = 0; g < strlen(riadok[j]); g++)
+    {
+      if (riadok[j][g] != '.' && riadok[j][g] != '1' && riadok[j][g] != '2' && riadok[j][g] != '3' && riadok[j][g] != '4' && riadok[j][g] != '5' && riadok[j][g] != '6' && riadok[j][g] != '7' && riadok[j][g] != '8' && riadok[j][g] != '9' && riadok[j][g] != '0' && riadok[j][g] != '\n' && riadok[j][g] != '\0')
+      {
         riadok[j][0] = '9';
         riadok[j][1] = '.';
         riadok[j][2] = '9';
@@ -38,12 +50,16 @@ int main(){
     }
   }
   i = 0;
-  for (int j = 0; j < need - 1; j++){
+  for (int j = 0; j < need - 1; j++)
+  {
     i = 1;
-    for (int g = 0; g < strlen(riadok[j]); g++){
-      if ((riadok[j][g] == '1' && riadok[j][g] == '2' && riadok[j][g] == '3' && riadok[j][g] == '4' && riadok[j][g] == '5' && riadok[j][g] == '6' && riadok[j][g] == '7' && riadok[j][g] == '8' && riadok[j][g] == '9' && riadok[j][g] == '0' && riadok[j][g] == '\0')){
+    for (int g = 0; g < strlen(riadok[j]); g++)
+    {
+      if ((riadok[j][g] == '1'  riadok[j][g] == '2'  riadok[j][g] == '3'  riadok[j][g] == '4'  riadok[j][g] == '5'  riadok[j][g] == '6'  riadok[j][g] == '7'  riadok[j][g] == '8'  riadok[j][g] == '9'  riadok[j][g] == '0'  riadok[j][g] == '\0'))
+      {
         i++;
-        if (strlen(riadok[j]) == i){
+        if (strlen(riadok[j]) == i)
+        {
           riadok[j][0] = '9';
           riadok[j][1] = '.';
           riadok[j][2] = '9';
@@ -56,8 +72,11 @@ int main(){
       }
     }
   }
-  for (int j = 0; j < need - 1; j++){
-    if (riadok[j][0] == '0'){
+
+  for (int j = 0; j < need - 1; j++)
+  {
+    if (riadok[j][0] == '0')
+    {
       riadok[j][0] = '9';
       riadok[j][1] = '.';
       riadok[j][2] = '9';
@@ -67,9 +86,13 @@ int main(){
       riadok[j][6] = '\0';
     }
   }
-  for (int j = 0; j < need - 1; j++){
-    for (int g = 0; g < strlen(riadok[j]); g++){
-      if (riadok[j][g] == '0' && riadok[j][g - 1] == '.'){
+
+  for (int j = 0; j < need - 1; j++)
+  {
+    for (int g = 0; g < strlen(riadok[j]); g++)
+    {
+      if (riadok[j][g] == '0' && riadok[j][g - 1] == '.')
+      {
         riadok[j][0] = '9';
         riadok[j][1] = '.';
         riadok[j][2] = '9';
@@ -80,14 +103,19 @@ int main(){
       }
     }
   }
-  char riadok1[499];
+
+  char riadok1[999];
   i = 0;
-  for (int j = 0; j < need - 1; j++){
-    for (int g = 0; g < strlen(riadok[j]); g++){
-      if (riadok[j][g] == '\n'){
+  for (int j = 0; j < need - 1; j++)
+  {
+    for (int g = 0; g < strlen(riadok[j]); g++)
+    {
+      if (riadok[j][g] == '\n')
+      {
         riadok[j][g] = '.';
       }
-      if (riadok[j][g] != '\0'){
+      if (riadok[j][g] != '\0')
+      {
         riadok1[i] = riadok[j][g];
         i++;
       }
@@ -96,163 +124,221 @@ int main(){
   riadok1[i] = '\0';
   int len = strlen(riadok1);
   int s = 0;
-  for (int j = 0; j < len; j++){
-    if (riadok1[j] == '.'){
+  for (int j = 0; j < len; j++)
+  {
+    if (riadok1[j] == '.')
+    {
       s++;
     }
   }
   char *endptr = NULL;
   char *start = riadok1;
-  int number[s];
+  int cisla[s];
   i = 0;
-  while (start < (riadok1 + len)){
-    number[i] = strtol(start, &endptr, 10);
-    if (number[i])
+  while (start < (riadok1 + len))
+  {
+    cisla[i] = strtol(start, &endptr, 10);
+    if (cisla[i])
+    {
       start = endptr + 1;
+    }
     else
+    {
       break;
+    }
     i++;
   }
-  need = 0;
-  for (int j = 0; j < s; j = j + 3){
-    if (number[j + 1] > 12 || number[j + 1] < 0 || number[j] < 1 || number[j] > 31 || number[j + 2] < 1900 || number[j + 2] > 2100){
-      number[j] = 0;
-      number[j + 1] = 0;
-      number[j + 2] = 0;
-      need++;
-    }
-  }
-  for (int j = 0; j < s; j = j + 3){
-    if (number[j + 1] == 2 && number[j] == 29 && number[j + 2] % 4 != 0) {
-      number[j] = 0;
-      number[j + 1] = 0;
-      number[j + 2] = 0;
-      need++;
-    }
-  }
-  for (int j = 0; j < s; j = j + 3){
-    if (number[j + 1] == 1 && number[j] > 0 && number[j] <= 31){
-      if (number[j] <= 24)
-        number[j] = number[j] + 7;
-      else if (number[j] > 24){
-        number[j] = number[j] + 7 - 31;
-        number[j + 1]++;
-      }
-    }
-    else if (number[j + 1] == 2 && number[j] > 0 && number[j] <= 28 && number[j + 2] % 4 != 0){
-      if (number[j] <= 21){
-        number[j] = number[j] + 7;
-      }
-      else if (number[j] > 21){
-        number[j] = number[j] + 7 - 28;
-        number[j + 1]++;
-      }
-    }
-    else if (number[j + 1] == 2 && number[j] > 0 && number[j] <= 29 && number[j + 2] % 4 == 0){
-      if (number[j] <= 22){
-        number[j] = number[j] + 7;
-      }
-      else if (number[j] > 22){
-        number[j] = number[j] + 7 - 29;
-        number[j + 1]++;
-      }
-    }
-    else if (number[j + 1] == 3 && number[j] > 0 && number[j] <= 31){
-      if (number[j] <= 24){
-        number[j] = number[j] + 7;
-      }
-      else if (number[j] > 24){
-        number[j] = number[j] + 7 - 31;
-        number[j + 1]++;
-      }
-    }
-    else if (number[j + 1] == 4 && number[j] > 0 && number[j] <= 30){
-      if (number[j] <= 23){
-        number[j] = number[j] + 7;
-      }
-      else if (number[j] > 23){
-        number[j] = number[j] + 7 - 30;
-        number[j + 1]++;
-      }
-    }
-    else if (number[j + 1] == 5 && number[j] > 0 && number[j] <= 31){
-      if (number[j] <= 24){
-        number[j] = number[j] + 7;
-      }
-      else if (number[j] > 24){
-        number[j] = number[j] + 7 - 31;
-        number[j + 1]++;
-      }
-    }
-    else if (number[j + 1] == 6 && number[j] > 0 && number[j] <= 30){
-      if (number[j] <= 23){
-        number[j] = number[j] + 7;
-      }
-      else if (number[j] > 23){
-        number[j] = number[j] + 7 - 30;
-        number[j + 1]++;
-      }
-    }
-    else if (number[j + 1] == 7 && number[j] > 0 && number[j] <= 31){
-      if (number[j] <= 24){
-        number[j] = number[j] + 7;
-      }
-      else if (number[j] > 24){
 
-        number[j] = number[j] + 7 - 31;
-        number[j + 1]++;
+  need = 0;
+  for (int j = 0; j < s; j = j + 3)
+  {
+    if (cisla[j + 1] > 12  cisla[j + 1] < 0  cisla[j] < 1  cisla[j] > 31  cisla[j + 2] < 1900  cisla[j + 2] > 2100)
+    {
+      cisla[j] = 0;
+      cisla[j + 1] = 0;
+      cisla[j + 2] = 0;
+      need++;
+    }
+  }
+
+  for (int j = 0; j < s; j = j + 3)
+  {
+    if (cisla[j + 1] == 2 && cisla[j] == 29 && cisla[j + 2] % 4 != 0)
+    {
+      cisla[j] = 0;
+      cisla[j + 1] = 0;
+      cisla[j + 2] = 0;
+      need++;
+    }
+  }
+
+  for (int j = 0; j < s; j = j + 3)
+  {
+    if (cisla[j + 1] == 1 && cisla[j] > 0 && cisla[j] <= 31)
+    {
+      if (cisla[j] <= 24)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 24)
+      {
+        cisla[j] = cisla[j] + 7 - 31;
+        cisla[j + 1]++;
       }
     }
-    else if (number[j + 1] == 8 && number[j] > 0 && number[j] <= 31){
-      if (number[j] <= 24){
-        number[j] = number[j] + 7;
+    else if (cisla[j + 1] == 2 && cisla[j] > 0 && cisla[j] <= 28 && cisla[j + 2] % 4 != 0)
+    {
+      if (cisla[j] <= 21)
+      {
+        cisla[j] = cisla[j] + 7;
       }
-      else if (number[j] > 24){
-        number[j] = number[j] + 7 - 31;
-        number[j + 1]++;
+      else if (cisla[j] > 21)
+      {
+        cisla[j] = cisla[j] + 7 - 28;
+        cisla[j + 1]++;
       }
     }
-    else if (number[j + 1] == 9 && number[j] > 0 && number[j] <= 30){
-      if (number[j] <= 23){
-        number[j] = number[j] + 7;
+    else if (cisla[j + 1] == 2 && cisla[j] > 0 && cisla[j] <= 29 && cisla[j + 2] % 4 == 0)
+    {
+      if (cisla[j] <= 22)
+      {
+        cisla[j] = cisla[j] + 7;
       }
-      else if (number[j] > 23){
-        number[j] = number[j] + 7 - 30;
-        number[j + 1]++;
+      else if (cisla[j] > 22)
+      {
+        cisla[j] = cisla[j] + 7 - 29;
+        cisla[j + 1]++;
       }
     }
-    else if (number[j + 1] == 10 && number[j] > 0 && number[j] <= 31){
-      if (number[j] <= 24){
-        number[j] = number[j] + 7;
+    else if (cisla[j + 1] == 3 && cisla[j] > 0 && cisla[j] <= 31)
+    {
+      if (cisla[j] <= 24)
+      {
+        cisla[j] = cisla[j] + 7;
       }
-      else if (number[j] > 24){
-        number[j] = number[j] + 7 - 31;
-        number[j + 1]++;
+      else if (cisla[j] > 24)
+      {
+        cisla[j] = cisla[j] + 7 - 31;
+        cisla[j + 1]++;
       }
     }
-    else if (number[j + 1] == 11 && number[j] > 0 && number[j] <= 30){
-      if (number[j] <= 23){
-        number[j] = number[j] + 7;
+    else if (cisla[j + 1] == 4 && cisla[j] > 0 && cisla[j] <= 30)
+    {
+      if (cisla[j] <= 23)
+      {
+        cisla[j] = cisla[j] + 7;
       }
-      else if (number[j] > 23){
-        number[j] = number[j] + 7 - 30;
-        number[j + 1]++;
+      else if (cisla[j] > 23)
+      {
+        cisla[j] = cisla[j] + 7 - 30;
+        cisla[j + 1]++;
       }
     }
-    else if (number[j + 1] == 12 && number[j] > 0 && number[j] <= 31){
-      if (number[j] <= 24){
-        number[j] = number[j] + 7;
+    else if (cisla[j + 1] == 5 && cisla[j] > 0 && cisla[j] <= 31)
+    {
+      if (cisla[j] <= 24)
+      {
+        cisla[j] = cisla[j] + 7;
       }
-      else if (number[j] > 24){
-        number[j] = number[j] + 7 - 31;
-        number[j + 1] = 1;
-        number[j + 2]++;
+      else if (cisla[j] > 24)
+      {
+        cisla[j] = cisla[j] + 7 - 31;
+        cisla[j + 1]++;
       }
     }
-    if (number[j] != 0 && number[j + 1] != 0 && number[j + 2] != 0){
-      printf("%d.%d.%d\n\n", number[j], number[j + 1], number[j + 2]);
+    else if (cisla[j + 1] == 6 && cisla[j] > 0 && cisla[j] <= 30)
+    {
+      if (cisla[j] <= 23)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 23)
+      {
+        cisla[j] = cisla[j] + 7 - 30;
+        cisla[j + 1]++;
+      }
     }
-    else if (number[j] == 0 && number[j + 1] == 0 && number[j + 2] == 0){
+    else if (cisla[j + 1] == 7 && cisla[j] > 0 && cisla[j] <= 31)
+    {
+      if (cisla[j] <= 24)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 24)
+      {
+
+        cisla[j] = cisla[j] + 7 - 31;
+        cisla[j + 1]++;
+      }
+    }
+    else if (cisla[j + 1] == 8 && cisla[j] > 0 && cisla[j] <= 31)
+    {
+      if (cisla[j] <= 24)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 24)
+      {
+        cisla[j] = cisla[j] + 7 - 31;
+        cisla[j + 1]++;
+      }
+    }
+    else if (cisla[j + 1] == 9 && cisla[j] > 0 && cisla[j] <= 30)
+    {
+      if (cisla[j] <= 23)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 23)
+      {
+        cisla[j] = cisla[j] + 7 - 30;
+        cisla[j + 1]++;
+      }
+    }
+    else if (cisla[j + 1] == 10 && cisla[j] > 0 && cisla[j] <= 31)
+    {
+      if (cisla[j] <= 24)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 24)
+      {
+        cisla[j] = cisla[j] + 7 - 31;
+        cisla[j + 1]++;
+      }
+    }
+    else if (cisla[j + 1] == 11 && cisla[j] > 0 && cisla[j] <= 30)
+    {
+      if (cisla[j] <= 23)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 23)
+      {
+        cisla[j] = cisla[j] + 7 - 30;
+        cisla[j + 1]++;
+      }
+    }
+    else if (cisla[j + 1] == 12 && cisla[j] > 0 && cisla[j] <= 31)
+    {
+      if (cisla[j] <= 24)
+      {
+        cisla[j] = cisla[j] + 7;
+      }
+      else if (cisla[j] > 24)
+      {
+        cisla[j] = cisla[j] + 7 - 31;
+        cisla[j + 1] = 1;
+        cisla[j + 2]++;
+      }
+    }
+    if (cisla[j] != 0 && cisla[j + 1] != 0 && cisla[j + 2] != 0)
+    {
+      printf("%d.%d.%d\n\n", cisla[j], cisla[j + 1], cisla[j + 2]);
+    }
+
+    else if (cisla[j] == 0 && cisla[j + 1] == 0 && cisla[j + 2] == 0)
+    {
       puts("Neplatny datum.");
     }
   }