#1034. 【中山A组 2018.8.19 T1】列车调度

https://sjzezoj.com/submission/37395

S2OJ/1034/1034.cpp

@@ -0,0 +1,22 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, l, x, ans;
+set<int> s;
+
+int main() {
+    cin >> n;
+    for (int i = 1; i <= n; i++) {
+        cin >> x;
+        auto it = s.upper_bound(x);
+        if (it == s.end()) {
+            ans++;
+        } else {
+            s.erase(*it);
+        }
+        s.insert(x);
+    }
+    cout << ans << endl;
+    return 0;
+}