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Codeforces Round 1074 (Div. 4)/E. The Robotic Rush.cpp

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+/* Problem URL: https://codeforces.com/problemset/problem/2185/E */
+
+#include <bits/stdc++.h>
+#include <ext/pb_ds/assoc_container.hpp>
+#include <ext/pb_ds/tree_policy.hpp>
+
+using namespace std;
+using namespace __gnu_pbds;
+
+template <class T, class comp = less<>>
+using ordered_set = tree<T, null_type , comp , rb_tree_tag , tree_order_statistics_node_update>;
+
+#define V vector
+
+#define rmin(a, b) a = min(a, b)
+#define rmax(a, b) a = max(a, b)
+
+#define rep(i, lim) for (int i = 0; i < (lim); i++)
+#define nrep(i, s, lim) for (int i = s; i < (lim); i++)
+
+#define repv(i, v) for (auto &i : (v))
+#define fillv(v) for (auto &itr_ : (v)) { cin >> itr_; }
+#define sortv(v) sort(v.begin(), v.end())
+#define all(v) (v).begin(), (v).end()
+
+using vi = vector<int>;
+using vvi = vector<vi>;
+using vvvi = vector<vvi>;
+using vvvvi = vector<vvvi>;
+
+using ll = long long;
+
+using vl = vector<ll>;
+using vvl = vector<vl>;
+using vvvl = vector<vvl>;
+using vvvvl = vector<vvvl>;
+
+template<class v>
+auto operator<<(ostream &os, const vector<v> &vec)->ostream& {
+    os << vec[0];
+    for (size_t i = 1; i < vec.size(); i++) {
+        os << ' ' << vec[i];
+    }
+    os << '\n';
+    return os;
+}
+
+template<class v>
+auto operator>>(istream &is, vector<v> &vec)->istream& {
+    for (auto &i : vec) {
+        is >> i;
+    }
+    return is;
+}
+
+template<class v>
+auto operator<<(ostream &os, const vector<vector<v>> &vec)->ostream& {
+    for (auto &i : vec) {
+        os << i[0];
+        for (size_t j = 1; j < i.size(); j++) {
+            os << ' ' << i[j];
+        }
+        os << '\n';
+    }
+    return os;
+}
+
+template<class v>
+auto operator>>(istream  &is, vector<vector<v>> &vec)->istream& {
+    for (auto &i : vec) {
+        for (auto &j : i) {
+            is >> j;
+        }
+    }
+    return is;
+}
+
+const int oo = INT32_MAX >> 1;
+const ll OO = INT64_MAX >> 1;
+
+
+void pre()
+{
+
+}
+
+#define TEST 1
+
+void solve()
+{
+    int n, m, q;
+    cin >> n >> m >> q;
+
+    vl a(n);
+    vl b(m);
+    cin >> a >> b;
+    sortv(b);
+
+    string c;
+    cin >> c;
+
+    V<pair<int, int>> mov(q + 1);
+    int now = 0;
+    nrep(i, 1, q + 1) {
+        char cur = c[i - 1];
+        mov[i] = mov[i - 1];
+        now += (cur == 'R') - (cur == 'L');
+        rmin(mov[i].first, now);
+        rmax(mov[i].second, now);
+    }
+
+    vi ans(q + 1);
+    ans[0] = n;
+    rep(i, n) {
+        int low = 0;
+        int high = q + 1;
+        while (low < high) {
+            int mid = (low + high) >> 1;
+
+            ll posl = a[i] + mov[mid].first;
+            ll posr = a[i] + mov[mid].second;
+
+            auto itr = lower_bound(all(b), posl);
+            auto itr2 = upper_bound(all(b), posr);
+
+            if (((itr == b.end()) || (*itr < posl || *itr > a[i])) && ((itr2 == b.begin()) || (*prev(itr2) > posr || *prev(itr2) < a[i]))) {
+                low = mid + 1;
+                continue;
+            }
+
+            high = mid;
+        }
+
+        if (low == q + 1) {
+            continue;
+        }
+
+        ans[low]--;
+    }
+
+    nrep(i, 1, q + 1) {
+        ans[i] += ans[i - 1];
+        cout << ans[i] << ' ';
+    }
+    cout << endl;
+}
+
+int main()
+{
+    ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    pre();
+
+    int t;
+    (TEST && cin >> t) || (t = 1);
+    while (t--) {
+        solve();
+    }
+}