diff --git a/BaekJoon/1958/yerin.py b/BaekJoon/1958/yerin.py
new file mode 100644
index 0000000..2e40c14
--- /dev/null
+++ b/BaekJoon/1958/yerin.py
@@ -0,0 +1,19 @@
+a = input().strip()
+b = input().strip()
+c = input().strip()
+
+dp = [[[0] * (len(c)+1) for _ in range(len(b)+1)] for _ in range(len(a)+1)]
+
+for i in range(1, len(a)+1):
+    for j in range(1, len(b)+1):
+        for k in range(1, len(c)+1):
+            if a[i-1] == b[j-1] == c[k-1]:
+                dp[i][j][k] = dp[i-1][j-1][k-1] + 1
+            else:
+                dp[i][j][k] = max(
+                    dp[i-1][j][k],
+                    dp[i][j-1][k],
+                    dp[i][j][k-1]
+                )
+
+print(dp[-1][-1][-1])
\ No newline at end of file