1 files changed, 29 insertions, 0 deletions
diff --git a/12.5/feb/gold/route.cpp b/12.5/feb/gold/route.cpp
new file mode 100644
index 0000000..aab04ed
--- /dev/null
+++ b/12.5/feb/gold/route.cpp
@@ -0,0 +1,29 @@
+#include <algorithm>
+#include <iostream>
+using namespace std;
+constexpr auto INF = (int)1e9;
+typedef pair<int, int> ii;
+
+int l[40005], r[40005], dl[40005] = { 0 }, dr[40005] = { 0 };
+ii E[100005];
+
+int main() {
+	int N, M, R;
+	cin >> N >> M >> R;
+	for (int i = 0; i < N; i++) cin >> l[i];
+	for (int i = 0; i < M; i++) cin >> r[i];
+	for (int i = 0; i < R; i++) cin >> E[i].first >> E[i].second;
+
+	sort(E, E + R, [](const ii& a, const ii& b) { return a.first + a.second < b.first + b.second; });
+
+	for (int i = 0; i < N; i++) dl[i] = l[i];
+	for (int i = 0; i < M; i++) dr[i] = r[i];
+
+	for (int i = 0; i < R; i++) {
+		int u = E[i].first, v = E[i].second, a = dl[--u], b = dr[--v];
+		dl[u] = max(l[u] + b, dl[u]);
+		dr[v] = max(r[v] + a, dr[v]);
+	}
+
+	cout << max(*max_element(dl, dl + N), *max_element(dr, dr + N)) << endl;
+}