diff --git "a/Insung-Jo/level_0/\354\226\221\352\274\254\354\271\230.js" "b/Insung-Jo/level_0/\354\226\221\352\274\254\354\271\230.js"
new file mode 100644
index 0000000..0975d24
--- /dev/null
+++ "b/Insung-Jo/level_0/\354\226\221\352\274\254\354\271\230.js"
@@ -0,0 +1,15 @@
+function solution(skewerCount, drinkCount) {
+  const LAMB_SKEWER_PRICE = 12000;
+  const DRINK_PRICE = 2000;
+  const FREE_DRINK_THRESHOLD = 10;
+  const NO_SERVICE_COUNT = 0;
+
+  if(typeof skewerCount !== 'number' || typeof drinkCount !== 'number') throw new Error('숫자를 입력해주세요.');
+  if(skewerCount < 0 || drinkCount < 0) throw new Error('음수는 허용되지 않습니다.');
+
+  const drinkService =  skewerCount >= FREE_DRINK_THRESHOLD ? Math.trunc(skewerCount / FREE_DRINK_THRESHOLD) : NO_SERVICE_COUNT;
+
+  const result = skewerCount * LAMB_SKEWER_PRICE + drinkCount * DRINK_PRICE - drinkService * DRINK_PRICE;
+
+  return result;
+}
\ No newline at end of file
diff --git "a/Insung-Jo/\352\260\201\353\217\204\352\270\260.js" "b/Insung-Jo/\352\260\201\353\217\204\352\270\260.js"
new file mode 100644
index 0000000..1cd1818
--- /dev/null
+++ "b/Insung-Jo/\352\260\201\353\217\204\352\270\260.js"
@@ -0,0 +1,11 @@
+function solution(angle) { 
+  if (typeof answer !== 'number') throw new Error('숫자를 입력하세요');
+  let answer = 0;
+
+  if(angle === 180) answer = 4;
+  if(angle > 90 && angle < 180) answer = 3;
+  if(angle === 90) answer = 2;
+  if(angle > 0 && angle < 90 ) answer = 1;
+
+  return answer;
+}
\ No newline at end of file