diff --git a/homework_01/task_01/src/main.cpp b/homework_01/task_01/src/main.cpp
index 0b3dcb2..24c8952 100644
--- a/homework_01/task_01/src/main.cpp
+++ b/homework_01/task_01/src/main.cpp
@@ -1,10 +1,11 @@
 #include <iostream>
-
 #include <utils.hpp>
 
 int main() {
-  for (const auto& word : SplitString("asdas das das fgag (adasd 1fas)")) {
-    std::cout << word << "\n";
+  std::string line;
+  line = "a\na\ta a";
+  for (const auto& word : SplitString(line)) {
+    std::cout << word << '\n';
   }
   return 0;
 }
diff --git a/homework_01/task_01/src/utils.cpp b/homework_01/task_01/src/utils.cpp
index a6989bd..cd30430 100644
--- a/homework_01/task_01/src/utils.cpp
+++ b/homework_01/task_01/src/utils.cpp
@@ -1,7 +1,44 @@
 #include "utils.hpp"
 
-#include <stack>
+#include <string.h>
 
+#include <iostream>
+#include <stack>
+#include <string>
+#include <vector>
+using namespace std;
 std::vector<std::string> SplitString(const std::string& data) {
-  return {};
+  std::vector<std::string> v;
+  std::string buff = "";
+  bool flag = false;  //скобки закрыты (или их нет)
+  // cout << size(data) << endl;
+  for (int i = 0; i < size(data); ++i) {
+    if (data[i] == '(') {
+      flag = true;  //скобки открыты
+    } else if (data[i] == ')') {
+      flag = false;  //скобки закрыты
+    }
+    if (((data[i] != ' ') and (data[i] != '\t')) or (flag == true)) {
+      buff += data[i];
+    }
+    // cout << "Data" << i << " : " << data[i] << endl;
+    // cout << "Buff: " << buff << endl;
+    if (flag == false) {
+      if ((data[i] == ' ') or (data[i] == '\t') or (i + 1 >= size(data))) {
+        if (buff != "") {
+          v.push_back(buff);
+          buff = "";
+        }
+      }
+    } else {
+      if (i + 1 >= size(data)) {
+        if (buff != "") {
+          v.push_back(buff);
+          buff = "";
+        }
+      }
+    }
+  }
+  // std::cout << "Size of vector: " << v.size() << "\n";
+  return v;
 }
diff --git a/homework_01/task_02/src/main.cpp b/homework_01/task_02/src/main.cpp
index 72a6f13..f160237 100644
--- a/homework_01/task_02/src/main.cpp
+++ b/homework_01/task_02/src/main.cpp
@@ -1,10 +1,13 @@
-#include <iostream>
+#include <string.h>
 
+#include <iostream>
+#include <regex>
+#include <stack>
 #include <utils.hpp>
-
+using namespace std;
 int main() {
-  std::string data;
-  std::getline(std::cin, data);
-  std::cout << Calculate(data);
+  cout << "Itog:" << endl;
+  cout << Calculate("8/0") << endl;
+  cout << Calculate("8 / 0") << endl;
   return 0;
 }
diff --git a/homework_01/task_02/src/utils.cpp b/homework_01/task_02/src/utils.cpp
index ebc7ffc..cbe7b88 100644
--- a/homework_01/task_02/src/utils.cpp
+++ b/homework_01/task_02/src/utils.cpp
@@ -1,7 +1,97 @@
 #include "utils.hpp"
 
+#include <string.h>
+
+#include <iostream>
+#include <regex>
 #include <stack>
+#include <string>
+#include <vector>
+using namespace std;
+
+std::vector<std::string> SplitString(const std::string& data) {
+  std::vector<std::string> v;
+  std::string buff = "";
+  bool flag = false;
+  for (int i = 0; i < size(data); ++i) {
+    if (data[i] == '(') {
+      flag = true;
+    } else if (data[i] == ')') {
+      flag = false;
+    }
+    if (((data[i] != ' ') and (data[i] != '\t') and (data[i] != '+') and
+         (data[i] != '-') and (data[i] != '*') and (data[i] != '/')) or
+        (flag == true)) {
+      buff += data[i];
+    }
+    if (flag == false) {
+      if ((data[i] == ' ') or (data[i] == '\t') or (data[i] == '+') or
+          (data[i] == '-') or (data[i] == '*') or (data[i] == '/') or
+          (i + 1 >= size(data))) {
+        if (buff != "") {
+          v.push_back(buff);
+          buff = "";
+        }
+        if ((data[i] == '+') or (data[i] == '-') or (data[i] == '*') or
+            (data[i] == '/')) {
+          buff += data[i];
+          v.push_back(buff);
+          buff = "";
+        }
+      }
+    } else {
+      if (i + 1 >= size(data)) {
+        if (buff != "") {
+          v.push_back(buff);
+          buff = "";
+        }
+      }
+    }
+  }
+  return v;
+}
 
 int Calculate(const std::string& data) {
-  return 0;
+  int i = 0;
+  int buff_int = 0;
+  std::string znak = "";
+  int rez = 0;
+  vector<int> chisla;
+  vector<string> r = SplitString(data);
+  for (i = 0; i < r.size(); ++i) {
+    cout << r[i] << endl;
+    if ((r[i] != "+") and (r[i] != "-") and (r[i] != "*") and (r[i] != "/")) {
+      chisla.push_back(stoi(r[i]));
+    } else {
+      znak = r[i];
+    }
+  }
+  if (!chisla.empty() and !znak.empty())
+    rez = chisla[0];
+  else {
+    cout << "Error" << endl;
+    rez = -1;
+  }
+  if (!chisla.empty()) {
+    for (i = 1; i < chisla.size(); ++i) {
+      if (znak == "+") {
+        rez += chisla[i];
+      }
+      if (znak == "-") {
+        rez -= chisla[i];
+      }
+      if (znak == "*") {
+        rez *= chisla[i];
+      }
+      if (znak == "/") {
+        if (chisla[i] != 0)
+          rez /= chisla[i];
+        else {
+          cout << "Delit na Nol nelzya!" << endl;
+          rez = -1;
+        }
+      }
+    }
+  }
+  return rez;
 }
diff --git a/homework_01/task_02/src/utils.hpp b/homework_01/task_02/src/utils.hpp
index f1bceeb..d185005 100644
--- a/homework_01/task_02/src/utils.hpp
+++ b/homework_01/task_02/src/utils.hpp
@@ -5,3 +5,4 @@
 #include <vector>
 
 int Calculate(const std::string& data);
+std::vector<std::string> SplitString(const std::string& data);