diff --git a/code_study/Baekjoon/js/10101.js b/code_study/Baekjoon/js/10101.js
new file mode 100644
index 0000000..fe119c7
--- /dev/null
+++ b/code_study/Baekjoon/js/10101.js
@@ -0,0 +1,6 @@
+const [a, b, c] = require("fs").readFileSync(0, "utf8").toString().trim().split('\n').map(Number);
+
+if(a+b+c !== 180) console.log("Error");
+else if(a===b && a===c) console.log("Equilateral");
+else if(a===b || a===c || b===c) console.log("Isosceles");
+else console.log("Scalene");
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/1085.js b/code_study/Baekjoon/js/1085.js
new file mode 100644
index 0000000..46bc5a0
--- /dev/null
+++ b/code_study/Baekjoon/js/1085.js
@@ -0,0 +1,2 @@
+const n = require("fs").readFileSync(0, "utf8").toString().trim().split(' ').map(Number);
+console.log(Math.min(n[0],n[1],n[2]-n[0],n[3]-n[1]))
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/14215.js b/code_study/Baekjoon/js/14215.js
new file mode 100644
index 0000000..3086525
--- /dev/null
+++ b/code_study/Baekjoon/js/14215.js
@@ -0,0 +1,4 @@
+const [a, b, c] = require("fs").readFileSync(0, "utf8").toString().trim().split(' ').map(Number);
+const [sum, max] = [a+b+c-Math.max(a,b,c), Math.max(a,b,c)]
+if(sum > max) console.log(sum+max);
+else console.log(2*sum-1);
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/15894.js b/code_study/Baekjoon/js/15894.js
new file mode 100644
index 0000000..bc2ae3c
--- /dev/null
+++ b/code_study/Baekjoon/js/15894.js
@@ -0,0 +1 @@
+console.log(4*Number(require("fs").readFileSync(0, "utf8").toString().trim()));
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/27323.js b/code_study/Baekjoon/js/27323.js
new file mode 100644
index 0000000..fbff91a
--- /dev/null
+++ b/code_study/Baekjoon/js/27323.js
@@ -0,0 +1,2 @@
+const [a, b] = require("fs").readFileSync(0, "utf8").toString().trim().split('\n').map(Number);
+console.log(a*b);
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/3009.js b/code_study/Baekjoon/js/3009.js
new file mode 100644
index 0000000..9276353
--- /dev/null
+++ b/code_study/Baekjoon/js/3009.js
@@ -0,0 +1,10 @@
+const n = require("fs").readFileSync(0, "utf8").toString().trim().split('\n');
+let x=0, y=0;
+
+for(let l of n) {
+    let [a,b] = l.split(" ").map(Number);
+    x ^= a;
+    y ^= b;
+}
+
+console.log(x,y);
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/5073.js b/code_study/Baekjoon/js/5073.js
new file mode 100644
index 0000000..399b879
--- /dev/null
+++ b/code_study/Baekjoon/js/5073.js
@@ -0,0 +1,12 @@
+const n = require("fs").readFileSync(0, "utf8").toString().trim().split('\n');
+n.forEach(s => {
+    let [a,b,c] = s.split(' ').map(Number);
+    if(a===0 && b===0 && c===0) return;
+    else{
+        let sum = a + b + c - Math.max(a,b,c);
+        if(sum<=Math.max(a,b,c)) console.log("Invalid");
+        else if(a===b && a===c) console.log("Equilateral");
+        else if(a===b || a===c || b===c) console.log("Isosceles");
+        else console.log("Scalene");
+    }
+});
\ No newline at end of file
diff --git a/code_study/Baekjoon/js/9063.js b/code_study/Baekjoon/js/9063.js
new file mode 100644
index 0000000..8a07f7c
--- /dev/null
+++ b/code_study/Baekjoon/js/9063.js
@@ -0,0 +1,12 @@
+const n = require("fs").readFileSync(0, "utf8").toString().trim().split('\n');
+
+let [min_x, min_y] = n[1].split(' ').map(Number);
+let [max_x, max_y] = [min_x, min_y];
+
+n.slice(2).forEach( s => {
+    let [x, y] = s.split(' ').map(Number);
+    [min_x, min_y] = [Math.min(x, min_x), Math.min(y, min_y)];
+    [max_x, max_y] = [Math.max(x, max_x), Math.max(y, max_y)];
+});
+
+console.log((max_x-min_x)*(max_y-min_y));
\ No newline at end of file