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AtCoder/abc391/A_Lucky_Direction.cpp

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+#include <bits/stdc++.h>
+#define lo long long
+#define INF INT_MAX
+#define LLM LONG_LONG_MAX
+
+using namespace std;
+const int N = 1e7 + 10;
+/*
+    toothless. #17
+    @fredcss_dev
+*/
+
+map<string, string> mp;
+
+string n;
+
+signed main()
+{
+    mp["N"] = "S";
+    mp["E"] = "W";
+    mp["W"] = "E";
+    mp["S"] = "N";
+    mp["NE"] = "SW";
+    mp["NW"] = "SE";
+    mp["SE"] = "NW";
+    mp["SW"] = "NE";
+    cin >> n;
+    cout << mp[n];
+    return 0;
+}