103차 1번 문제풀이

Author: Eric

live10/test103/문제1/황장현.js

@@ -0,0 +1,23 @@
+const fs = require('fs');
+const input = fs
+  .readFileSync(process.platform === 'linux' ? '/dev/stdin' : './input.txt')
+  .toString()
+  .trim();
+
+function solution(input) {
+  let N = input;
+  let count = 0;
+
+  while (N >= 0) {
+    if (N % 5 === 0) {
+      count += N / 5;
+      return count;
+    }
+    N -= 3;
+    count++;
+  }
+
+  return -1;
+}
+
+console.log(solution(input));