diff --git a/1955C-InhabitantoftheDeepSea.cpp b/1955C-InhabitantoftheDeepSea.cpp
new file mode 100644
index 0000000..1a1f3fc
--- /dev/null
+++ b/1955C-InhabitantoftheDeepSea.cpp
@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+#define int long long
+using namespace std;
+
+
+void solve() {
+    string x, y; cin >> x >> y;
+    int n = x.size();
+    bool flag = false;
+    for(int i = 0; i < n; ++i) {
+      if ((x[i] > y[i]) == flag) swap(x[i], y[i]);
+      flag |= (x[i] != y[i]);
+    }
+    cout << x << '\n' << y << '\n';
+}
+
+int32_t main() {
+    ios_base::sync_with_stdio(false);
+    cin.tie(NULL);
+    cout.tie(NULL);
+    int t; cin >> t;
+    while(t--) solve();
+    return 0;
+}