diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
new file mode 100644
index 0000000..f2bb45f
--- /dev/null
+++ b/.devcontainer/Dockerfile
@@ -0,0 +1,12 @@
+FROM node:22
+
+# Install basic development tools
+RUN apt update && apt install -y less man-db sudo
+
+# Ensure default `node` user has access to `sudo`
+ARG USERNAME=node
+RUN echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME \
+    && chmod 0440 /etc/sudoers.d/$USERNAME
+
+# Set `DEVCONTAINER` environment variable to help with orientation
+ENV DEVCONTAINER=true
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..2fcdf5c
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,8 @@
+// See https://containers.dev/implementors/json_reference/ for configuration reference
+{
+	"name": "Untitled Node.js project",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+  "remoteUser": "node"
+}
diff --git a/.gitignore b/.gitignore
index 1c3166c..892bf8a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 *.obj
 *.pbd
 
+node_modules
\ No newline at end of file
diff --git a/3/index.js b/3/index.js
new file mode 100644
index 0000000..ca613e5
--- /dev/null
+++ b/3/index.js
@@ -0,0 +1,29 @@
+const fs = require("fs")
+const regEx = /mul\(\d+,\d+\)|do\(\)|don\'t\(\)/g
+let total = 0
+let count = true
+const input = fs.readFileSync("input.txt","utf-8")
+const result = input.match(regEx)
+// console.log("hello world")
+console.log(result)
+result.forEach((mulString)=>{
+    if (mulString=="do()"){
+        count=true
+        return
+    }
+    if(mulString=="don't()"){
+        count=false
+        return
+    }
+    if(count){
+        const numRegex= /\d+/g
+        const numbers = mulString.match(numRegex)
+        // console.log(...numbers)
+        const aVal =parseInt(numbers[0])
+        const bVal=parseInt(numbers[1])
+        total += aVal*bVal
+
+    }
+})
+// console.log(dontLocations.length)
+console.log("total: ",total)
\ No newline at end of file
diff --git a/3/index3a.js b/3/index3a.js
new file mode 100644
index 0000000..89ac79b
--- /dev/null
+++ b/3/index3a.js
@@ -0,0 +1,17 @@
+const fs = require("fs")
+const regEx = /mul\(\d+,\d+\)/g
+let total = 0
+const input = fs.readFileSync("input.txt","utf-8")
+const result = input.match(regEx)
+// console.log("hello world")
+console.log(result)
+result.forEach((mulString)=>{
+    const numRegex= /\d+/g
+    const numbers = mulString.match(numRegex)
+    console.log(...numbers)
+    const aVal =parseInt(numbers[0])
+    const bVal=parseInt(numbers[1])
+    total += aVal*bVal
+})
+
+console.log("total: ",total)
\ No newline at end of file
diff --git a/3/input.txt b/3/input.txt
new file mode 100644
index 0000000..f6e07bd
--- /dev/null
+++ b/3/input.txt
@@ -0,0 +1 @@
+from()$&mul(602,165)why()mul(305,64)?(where()-:mul(80,703);)why()*from()%select()mul(290,957)}/?%'from()]mul(851,335)mul(844,49)what()]![from(667,522)]}how()how()mul(938,695)#/)*?@~?@select()mul(706,392)^mul(242,513)who()@]mul(871,132)( ] from()$mul(41,656)^{(&how()from()[when()-when()mul(628,478)mul(287,621)why():'mul(127,825)# ]mul(360,578)select()?^^select() @:why()mul(136,849);{how()%*@%+how()[mul(544,891)mul(436,21)from()}mul(184,294)+/from(81,871) how()&?]mul(297,492)select()/}%;$$~{*mul(161,703)when():+(,mul(335,695) ()&where()?who();'mul(689,420)^how()from()how()what()>]where()don't()}%mul(78,176)~$where():@,>%mul(62,695)@{#how()mul(742,538)who(){$$who()@{+(mul(282,209)%mul(428,514)/+from()}>@<mul(131,844)mul(431,946)&mul(171,87)+mul(164,733)mul(760,223)/^$*@?[mul(485,824)!  *(^-^;mul(465,327)@}when()+~&$?[%don't()$:/!]mul(249,931)mul(963,891)}$%>mul(665,815),mul(762,48)[+/mul(591,445)~?who()#mul(36,3)select()~$ [<}*/do()''>~'$mul(109,905)}how(){!@where()%/mul(380,929)*){~:where()mul(547,552)$:*mul(58,881)where(145,89)[why(634,213)mul(699,443)mul(826,660)what()from()-how()}'from()what()<;mul(700,665)] #(*?how()<+mul(507,719))~*/-^(%mul(941,551)$;don't()#;:when()+#>mul(87,663)who()/how()mul(332,238)~mul(290,235)',why()mul(950,204);where(),(when()mul(233,633)-^}@who()^mul(289,147)$>-'$select(736,261)*~]mul(899,836)'why()do()@when()why()from()mul(975,883);select()who()mul(165,847)why();^/{^mul(31,153)?;'don't()( <!from()from()~'(&mul(352,285)mul(912,583)<mul(192,230)/+~}<!mul(710,930)-how(461,167)][^why()do()*#mul(543,422)^*from()/^#~do()mul(832,873)]#when(455,108)^}who()/]mul(448,716)why()#/&mul(319,598)when()]{/ /'why()mul(865,894): +what()>from()+})what()mul(262,509)!*where()}/-#~/mul(308,953);*!]mul(741,76)[mul(256,536)[)>%-who()<^[$mul(382,338)where()[ when():select()<>mul(993,630)@$mul(411,640)/+where(623,926)/~mul(807,676)+*],mul(579,979who()what()from()when()how()what(),mul(882,434)&who()'mul(154,824)from()#<<,,{where()$mul(259,438)from()}?:;mul(641,967?from())<,>~mul(325,912)%select()mul where()do()where()where();(!,[$why()mul(131,307)mul(323,794)mul(570,548+!$from()!}what(588,195)<select()select()mul(622,782)why()mul(304,116)${(mul(942,260why()[?<$mul(420,225);~,>-from()mul(319,524)!/why()mul(737,137)+^&]/mul(228,919)@mul(672,604)+when(773,127)select()+why(941,245)mul(121!<[?$?;from(987,370):mul(904,487)#^what()from()({?mul(791,791)!,::)@^(mul(517,686)what()*how(),why()&mul(218,978)#,who()&$who()how(205,211)where()[mul(70,357)^$[?^$^what()mul(245,237)where()why()?{/mul$when()+},why()mul(264,30)@*:when(628,215):+&why()[mul(346,794){:}~-,select(),mul(115,926)~mul(140,56)[/:#~don't()@</mul(750,438)}::]!*!mul(64,9)}#  ^mul(827,948)where(885,400)&mul(795,610)@mul(302,983)>:mul(889,788);;*!<$[when(),%mul(177,883)[mul(815,344)when()@$+ @)where(935,128)}{mul(638,520)why()-] when()] mul(639,171)!>[mulwho()~^:what()why()] <what() mul(595,754);mul(85,286)%<:mul(945,972)-mul(964,104)mul(163,666)don't()how()select(6,421),what()]mul(94,79)select()~[),-?mul(669,316)what()mul(452,152*~@]~why()how()when()mul(33,805)[how()select()[@]>mul(560,354)from()where()/];,how()} mul(980,896)>/;%who()&where(504,464);!do(),where()/mul(901,274)!when()mul(76,577)>select()mul(257,297)^+(/what(52,6)@%from()who()mul(331,276),what()when())+]{:&mul(653,163)''; '~mul(946,195)+/[from()mul(345,866)mul(975,684)#-:/why();-<:&mul(416,406)where(864,494)}{mul(343,101where()~ $/!where(331,467)who()@:mul(484,862)' mul(629,780)&%why(436,493)what()$mul(104,102)$,where()mul(2,157)who()%mul(404,895)mul(154,983)):]]%#:do()]from()+/#)/mul(682,696)what(518,168)select()where()+when(518,618)mul(799,756)+}why()}:mul(565,289);mul(687,685);@%!>?why()&;-mul(819,190)}]mul(596,898)mul(113,184)who();<mul(327,372) -when()+mul(327,170)>{@do()@?)why(),*/select()[mul(351,147):{+}}~^from()why()mul(350,104$''(from()<when();$$+mul(992,327);->$!when()<don't()mul(586,163))why()*<:;%mul(698,938)~mul(812,610)))where()^<^^*,<mul(50,331)]),/'}mul(469,997)^&who(){$[!]^#mul(468,630)@(+,}how()mul(97,867)! >mul(574,321)-mul(325,17);<& who(){]mul(960,765)^from())<<$:how()mul(412,562);mul(220,976)<what()how()!~{what()why()@what()mul(350,479)}when()&#@{<mul(135,697)[%mul(419,107)mul(33,102)&mul(430,537)?select(676,300)>*mul(338,463),$/#',from();select()*mul(982,199)&^:&mul(607,915)who()mul(473,531)$mul(490,191)select()&-~+>when()mul(105where()'/!do()<;[#why()mul(453,793)&*,^who()who()what()-<mul(722,985){what()[why()mul(526,659)![mul(863,260)select() /%&what()mul(81,404)}from(947,811)&mul(471,334)//why()}]why()what()~mul(160,947)'mul(679,16)>@why()from(642,548)%^(from()+don't()?-mul(976,65)what();]mul(155,153))where()who()when()[]mul(44,452)}mul(51,177)~$[mul(462,949)$}^select()#[)]mul(743,555)?[mul(750,557)}#{from()%(why()where()mul(807,786)+})>{)what()}do()mul(231 (how()*mul(667,833)when()~from()why(),who()(;)mul(729,999)mul(805,756)when()}what()who()!**who()]mul(920,392*]when(26,462)mul(558,874)!~?+$$';mul(694,195)when()/$?from()mul(198,978)%>;/why()who()}+why()@mul(248,980)$ how()>'select();mul(888,351)mul(476,169)[>@-mul(282,926)#<mul(301,964)mul(736,489)* when()?^mul(306,875) from()%'%from(){+when()<do()~/{#,>why()mul(637,563)-'~@!how()'^what()$mul(303,12)]how()~mul(922,806)^+when()[?don't(){,when()!*select()select(828,14)who()'why()mul(237,256)#mul(603,548)mul(887,362)!>%/how()[,%]don't()&mul(499,574)select()}%how() mul(787,625)what()who()) '*,mul(197,610)?!~('where()%'select()how()mul(840,759)} {$mul(19,916)}/mul(965[)) 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new file mode 100644
index 0000000..fd08909
--- /dev/null
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diff --git a/3/package.json b/3/package.json
new file mode 100644
index 0000000..65db3b1
--- /dev/null
+++ b/3/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "3",
+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "dev":"nodemon index.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "nodemon": "^3.1.9"
+  }
+}
diff --git a/4/index.js b/4/index.js
new file mode 100644
index 0000000..be7b968
--- /dev/null
+++ b/4/index.js
@@ -0,0 +1,69 @@
+const fs = require("fs");
+const forwardRegex = /XMAS/g;
+const backwardRegex = /SAMX/g;
+const input = fs.readFileSync("input.txt", "utf-8");
+const inputArr = input.split("\n");
+let totalMatches = 0;
+// console.log(inputArr)
+// const forwardMatchs = input.match(forwardRegex)
+// console.log(input)
+// console.log(forwardMatchs.length)
+//create a sliding window to match the words
+
+// for (row of inputArr) {
+//   // console.log(row)
+//   const forwardMatches = row.match(forwardRegex);
+//   const backwordsMatches = row.match(backwardRegex);
+
+//   if (forwardMatches) {
+//     totalMatches += forwardMatches.length;
+//   }
+//   if (backwordsMatches) {
+//     totalMatches += backwordsMatches.length;
+//   }
+// }
+
+// console.log(inputArr)
+const maxRows = inputArr.length;
+const maxLetters = inputArr[0].length;
+
+//horizontal words
+for (let x = 0; x < maxRows; x++) {
+  for (let y = 0; y + 3 <= maxLetters; y++) {
+    const word = inputArr[x][y] + inputArr[x][y + 1] + inputArr[x][y + 2] + inputArr[x][y + 3];
+    if (forwardRegex.test(word) || backwardRegex.test(word)) {
+      totalMatches++;
+    }
+  }
+}
+
+//vertical words
+for (let x = 0; x + 3 < maxRows; x++) {
+  for (let y = 0; y <= maxLetters; y++) {
+    const word = inputArr[x][y] + inputArr[x + 1][y] + inputArr[x + 2][y] + inputArr[x + 3][y];
+    if (forwardRegex.test(word) || backwardRegex.test(word)) {
+      totalMatches++;
+    }
+  }
+}
+//angled words 1
+for (let x = 0; x + 4 < maxRows; x++) {
+  for (let y = 0; y +3< maxLetters; y++) {
+    const word = inputArr[x][y] + inputArr[x + 1][y + 1] + inputArr[x + 2][y + 2] + inputArr[x + 3][y + 3];
+    if (forwardRegex.test(word) || backwardRegex.test(word)) {
+      totalMatches++;
+    }
+  }
+}
+//angled words 2
+for (let x = 0; x + 4 < maxRows; x++) {
+  for (let y = 0; y +3< maxLetters; y++) {
+    const word = inputArr[x][y+3] + inputArr[x+1][y + 2] + inputArr[x + 2][y + 1] + inputArr[x+3][y];
+    if (forwardRegex.test(word) || backwardRegex.test(word)) {
+      totalMatches++;
+    }
+    console.log(word);
+  }
+}
+
+console.log("totalMatches: ", totalMatches);
diff --git a/4/input.txt b/4/input.txt
new file mode 100644
index 0000000..45af8b4
--- /dev/null
+++ b/4/input.txt
@@ -0,0 +1,140 @@
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diff --git a/4/package-lock.json b/4/package-lock.json
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index 0000000..fd08909
--- /dev/null
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diff --git a/4/package.json b/4/package.json
new file mode 100644
index 0000000..65db3b1
--- /dev/null
+++ b/4/package.json
@@ -0,0 +1,15 @@
+{
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+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
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+    "dev":"nodemon index.js"
+  },
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "nodemon": "^3.1.9"
+  }
+}