diff --git a/du3/program.c b/du3/program.c
index eea3a0d..8b13789 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -1,95 +1 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <string.h>
-#include <math.h>
 
-void strip_spaces(char *str) {
-    char temp[1000];
-    int j = 0;
-    int i = 0;
-
-    while (str[i]) {
-        if (isspace(str[i]) && (j == 0 || isspace(temp[j - 1]) || temp[j - 1] == '=' || temp[j - 1] == '+' || temp[j - 1] == '-' || temp[j - 1] == '*' || temp[j - 1] == '/')) {
-            i++;
-        } else {
-            temp[j++] = str[i++];
-        }
-    }
-    temp[j] = '\0';
-    strcpy(str, temp);
-}
-
-int parse_equation(char *line, double *num1, double *num2, char *op, double *result) {
-    strip_spaces(line);
-
-    char *ptr = line;
-    char *endptr;
-
-    *num1 = strtod(ptr, &endptr);
-    if (ptr == endptr) return 0; 
-    ptr = endptr;
-
-    while (isspace(*ptr)) ptr++;
-    if (*ptr != '+' && *ptr != '-' && *ptr != '*' && *ptr != '/') return 0;
-    *op = *ptr;
-    ptr++;
-
-    while (isspace(*ptr)) ptr++;
-    *num2 = strtod(ptr, &endptr);
-    if (ptr == endptr) return 0; 
-    ptr = endptr;
-
-    while (isspace(*ptr)) ptr++;
-    if (*ptr != '=') return 0;
-    ptr++;
-
-    while (isspace(*ptr)) ptr++;
-    *result = strtod(ptr, &endptr);
-    if (ptr == endptr) return 0; 
-    while (isspace(*endptr)) endptr++;
-    if (*endptr != '\0' && *endptr != '\n') return 0;
-
-    return 1;
-}
-
-double calculate(double num1, double num2, char op) {
-    switch (op) {
-        case '+': return num1 + num2;
-        case '-': return num1 - num2;
-        case '*': return num1 * num2;
-        case '/': return num1 / num2;
-        default: return NAN;
-    }
-}
-
-double round_to_2(double value) {
-    return round(value * 100) / 100;
-}
-
-int main() {
-    char line[1000];
-
-    while (fgets(line, sizeof(line), stdin)) {
-        if (line[0] == '\n') break;  
-
-        double num1, num2, expected_result;
-        char op;
-
-        if (!parse_equation(line, &num1, &num2, &op, &expected_result)) {
-            printf("CHYBA\n");
-            continue;
-        }
-
-        double actual_result = calculate(num1, num2, op);
-        actual_result = round_to_2(actual_result);
-
-        if (actual_result == expected_result) {
-            printf("OK\n");
-        } else {
-            printf("ZLE\n");
-        }
-    }
-
-    return 0;
-}