diff --git a/day7/input.txt b/day7/input.txt
new file mode 100644
index 0000000..176cd6b
--- /dev/null
+++ b/day7/input.txt
@@ -0,0 +1 @@
+3,8,1001,8,10,8,105,1,0,0,21,46,63,76,97,118,199,280,361,442,99999,3,9,102,4,9,9,101,2,9,9,1002,9,5,9,101,4,9,9,102,2,9,9,4,9,99,3,9,101,5,9,9,102,3,9,9,101,3,9,9,4,9,99,3,9,1001,9,2,9,102,3,9,9,4,9,99,3,9,1002,9,5,9,101,4,9,9,1002,9,3,9,101,2,9,9,4,9,99,3,9,1002,9,5,9,101,3,9,9,1002,9,5,9,1001,9,5,9,4,9,99,3,9,102,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,1001,9,1,9,4,9,3,9,101,1,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,1002,9,2,9,4,9,3,9,1001,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,99,3,9,1002,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,101,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,102,2,9,9,4,9,99,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,1,9,9,4,9,3,9,101,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,1,9,9,4,9,99,3,9,1002,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,1,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,1001,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,101,1,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,101,2,9,9,4,9,99,3,9,101,1,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,101,1,9,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,101,2,9,9,4,9,99
diff --git a/day7/main.go b/day7/main.go
new file mode 100644
index 0000000..1795166
--- /dev/null
+++ b/day7/main.go
@@ -0,0 +1,205 @@
+package main
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	file, err := os.Open("input.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	if !scanner.Scan() {
+		log.Fatalln("Problem while read line.")
+		return
+	}
+
+	stringarr := strings.Split(scanner.Text(), ",")
+	var t2 = []int{}
+
+	for _, i := range stringarr {
+		j, err := strconv.Atoi(i)
+		if err != nil {
+			panic(err)
+		}
+		t2 = append(t2, j)
+	}
+	wip := make([]int, len(t2))
+	// ========= Finish now, we can solve the task ======
+	copy(wip, t2)
+	err = ParseArray(wip)
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func ParseArray(list []int) error {
+	for i := 0; i < len(list); i += 4 {
+		//log.Println(strconv.Itoa(i) +  " -> "  + strconv.Itoa(list[i]))
+		cmd := list[i]
+
+		if cmd == 99 {
+			return nil
+		}
+		sum := 0
+
+		mode1 := 0
+		mode2 := 0
+		//mode3 := 0
+
+		count := CountDigits(cmd)
+		if count > 2 {
+			cmdStr := strconv.Itoa(cmd)
+			cmd, _ = strconv.Atoi(cmdStr[len(cmdStr)-2:])
+
+			if count >= 3 {
+				mode1, _ = strconv.Atoi(cmdStr[len(cmdStr)-3 : len(cmdStr)-2])
+			}
+			if count >= 4 {
+				mode2, _ = strconv.Atoi(cmdStr[len(cmdStr)-4 : len(cmdStr)-3])
+			}
+			if count >= 5 {
+				//mode3, _ = strconv.Atoi(cmdStr[len(cmdStr)-4:len(cmdStr)-3])
+			}
+		}
+
+		if cmd == 1 {
+			num1 := -1
+			num2 := -1
+			if mode1 == 1 {
+				num1 = list[i+1]
+			} else {
+				num1 = list[list[i+1]]
+			}
+			if mode2 == 1 {
+				num2 = list[i+2]
+			} else {
+				num2 = list[list[i+2]]
+			}
+			sum = num1 + num2
+			list[list[i+3]] = sum
+
+		} else if cmd == 2 {
+
+			num1 := -1
+			num2 := -1
+			if mode1 == 1 {
+				num1 = list[i+1]
+			} else {
+				num1 = list[list[i+1]]
+			}
+			if mode2 == 1 {
+				num2 = list[i+2]
+			} else {
+				num2 = list[list[i+2]]
+			}
+			sum = num1 * num2
+			list[list[i+3]] = sum
+		} else if cmd == 3 {
+			var input int
+			fmt.Scanf("%d", &input)
+			list[list[i+1]] = input
+			i = i - 2
+		} else if cmd == 4 {
+			if mode1 == 1 {
+				fmt.Print(list[i+1])
+			} else {
+				fmt.Print(list[list[i+1]])
+			}
+			i = i - 2
+		} else if cmd == 5 {
+			num1 := -1
+			if mode1 == 1 {
+				num1 = list[i+1]
+			} else {
+				num1 = list[list[i+1]]
+			}
+			num2 := -1
+			if mode2 == 1 {
+				num2 = list[i+2]
+			} else {
+				num2 = list[list[i+2]]
+			}
+			if num1 != 0 {
+				i = num2 - 4
+			} else {
+				i -= 1
+			}
+		} else if cmd == 6 {
+			num1 := -1
+			if mode1 == 1 {
+				num1 = list[i+1]
+			} else {
+				num1 = list[list[i+1]]
+			}
+			num2 := -1
+			if mode2 == 1 {
+				num2 = list[i+2]
+			} else {
+				num2 = list[list[i+2]]
+			}
+			if num1 == 0 {
+				i = num2 - 4
+			} else {
+				i -= 1
+			}
+		} else if cmd == 7 {
+			num1 := -1
+			if mode1 == 1 {
+				num1 = list[i+1]
+			} else {
+				num1 = list[list[i+1]]
+			}
+			num2 := -1
+			if mode2 == 1 {
+				num2 = list[i+2]
+			} else {
+				num2 = list[list[i+2]]
+			}
+			if num1 < num2 {
+				list[list[i+3]] = 1
+			} else {
+				list[list[i+3]] = 0
+			}
+		} else if cmd == 8 {
+			num1 := -1
+			if mode1 == 1 {
+				num1 = list[i+1]
+			} else {
+				num1 = list[list[i+1]]
+			}
+			num2 := -1
+			if mode2 == 1 {
+				num2 = list[i+2]
+			} else {
+				num2 = list[list[i+2]]
+			}
+			if num1 == num2 {
+				list[list[i+3]] = 1
+			} else {
+				list[list[i+3]] = 0
+			}
+		} else {
+			return errors.New("Wrong Command (" + strconv.Itoa(list[i]) + ") at position " + strconv.Itoa(i))
+		}
+	}
+	return nil
+}
+
+func CountDigits(i int) int {
+	count := 0
+	for i != 0 {
+		i /= 10
+		count = count + 1
+	}
+	return count
+}