C - Collision 2

https://atcoder.jp/contests/abc243/submissions/30053743

AtCoder/ABC243/C/C.cpp

@@ -0,0 +1,39 @@
+#include <iostream>
+#include <map>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 2e5 + 5;
+
+int n;
+int a[N], b[N], c[N];
+
+std::map<int, int> map;
+
+signed main() {
+    std::ios::sync_with_stdio(false);
+    cin >> n;
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i] >> b[i];
+        map[b[i]] = 1e9 + 5;
+    }
+    for (int i = 1; i <= n; i++) {
+        char op;
+        cin >> op;
+        if (op == 'R') {
+            map[b[i]] = std::min(map[b[i]], a[i]), c[i] = 1;
+        }
+    }
+    for (int i = 1; i <= n; i++) {
+        if (!c[i]) {
+            if (map[b[i]] <= a[i]) {
+                cout << "Yes" << endl;
+                exit(0);
+            }
+        }
+    }
+    cout << "No" << endl;
+    return 0;
+}