Create route.cpp

Changes

1 changed files (+29/-0)

• 2013/February/Gold/route.cpp (new)
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    + #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; + }