From 8730864c3532d42e653b1bcfc5463941107579b3 Mon Sep 17 00:00:00 2001
From: hyesuuou <68391767+hyesuuou@users.noreply.github.com>
Date: Mon, 20 Dec 2021 23:33:02 +0900
Subject: [PATCH] =?UTF-8?q?[#3]=202021.12.18=20=EB=B0=B1=EC=A4=80=EB=8B=A8?=
 =?UTF-8?q?=EA=B3=84=EB=B3=848.=EA=B8=B0=EB=B3=B8=EC=88=98=ED=95=99=204?=
 =?UTF-8?q?=EB=AC=B8=EC=A0=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../1193.py"                                  | 23 +++++++++++++++++++
 .../1712.py"                                  | 10 ++++++++
 .../2292.py"                                  | 13 +++++++++++
 .../2869.py"                                  |  5 ++++
 4 files changed, 51 insertions(+)
 create mode 100644 "Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1193.py"
 create mode 100644 "Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1712.py"
 create mode 100644 "Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2292.py"
 create mode 100644 "Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2869.py"

diff --git "a/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1193.py" "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1193.py"
new file mode 100644
index 0000000..e9b11c3
--- /dev/null
+++ "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1193.py"	
@@ -0,0 +1,23 @@
+x = int(input())
+group = 0
+a = 0
+b = 0
+while x > group*(group+1)/2:
+    group = group+1
+
+# 해당 그룹 내에서 몇번째? -> K
+k = x - (group-1) * (group) // 2
+
+if x == 1:
+    print("1/1")
+    exit(0)
+
+if group%2==0:
+    # 순방향
+    a = k
+    b = group+1-a
+else:
+    b = k
+    a = group+1-b
+
+print("%d/%d"%(a,b))
diff --git "a/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1712.py" "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1712.py"
new file mode 100644
index 0000000..5873b81
--- /dev/null
+++ "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/1712.py"	
@@ -0,0 +1,10 @@
+a, b, c = map(int, input().split())
+
+result = 0
+
+if a + (b - c) * 2 >= a + b - c:
+    result = -1
+    print(result)
+else:
+    result = a//(c - b) + 1
+    print(result)
diff --git "a/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2292.py" "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2292.py"
new file mode 100644
index 0000000..76392c0
--- /dev/null
+++ "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2292.py"	
@@ -0,0 +1,13 @@
+n = int(input())
+room = 0
+count = 2
+while True:
+    if n == 1:
+        room = 1
+        break
+    if count > n:
+        break
+    count = count + 6*room
+    room = room + 1
+
+print(room)
\ No newline at end of file
diff --git "a/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2869.py" "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2869.py"
new file mode 100644
index 0000000..ca536e8
--- /dev/null
+++ "b/Boj/\352\270\260\353\263\270 \354\210\230\355\225\2311/2869.py"	
@@ -0,0 +1,5 @@
+import math
+a, b, v = map(int, input().split())
+ans = math.ceil((v-b)/(a-b))
+
+print(ans)
\ No newline at end of file