Submission #1276995

#TimeUsernameProblemLanguageResultExecution timeMemory
1276995ducdevPilot (NOI19_pilot)C++17
78 / 100
30 ms6980 KiB
// Author: 4uckd3v - Nguyen Cao Duc #include <bits/stdc++.h> using namespace std; #define all(x) (x).begin(), (x).end() typedef long long ll; typedef pair<int, int> ii; const int MAX_N = 1e6; const int MAX_Q = 1e6; const int MOD = 1e9 + 7; int n, q; int h[MAX_N + 5]; vector<ii> queries; namespace SUBTASK_5_8 { const int N = MAX_N; int st[20][N + 5]; int jump(int idx, int x) { for (int i = 19; i >= 0; i--) { if (idx + (1 << i) - 1 <= n && st[i][idx] <= x) { idx += 1 << i; }; }; return idx - 1; }; void Solve() { for (int i = 1; i <= n; i++) st[0][i] = h[i]; for (int j = 1; (1 << j) <= n; j++) { for (int i = 1; i + (1 << j) - 1 <= n; i++) { st[j][i] = max(st[j - 1][i], st[j - 1][i + (1 << (j - 1))]); }; }; for (ii query : queries) { int x = query.first; ll res = 0; for (int i = 1; i <= n; i++) { if (h[i] > x) continue; int j = jump(i, x); res += j - i + 1; }; cout << res << '\n'; }; }; }; // namespace SUBTASK_5_8 namespace SUBTASK_67 { const int N = MAX_N; const int Q = MAX_Q; ll ans[Q + 5]; void Solve() { sort(all(queries)); int l = 1, r = 1; for (int i = 0; i < q; i++) { int x = queries[i].first; int qIdx = queries[i].second; if (i > 0) ans[qIdx] = ans[queries[i - 1].second]; while (h[r] <= x && r <= n) r++; ans[qIdx] += (ll)(r - l) * (r - l + 1) / 2; // [l..r - 1] ans[qIdx] += (ll)(r - l) * (l - 1); // [1..l] & [l..r - 1] l = r; }; for (int i = 1; i <= q; i++) cout << ans[i] << '\n'; }; }; // namespace SUBTASK_67 int main() { ios_base::sync_with_stdio(0); cin.tie(0); if (fopen("MAIN.INP", "r")) { freopen("MAIN.INP", "r", stdin); freopen("MAIN.OUT", "w", stdout); }; cin >> n >> q; for (int i = 1; i <= n; i++) { cin >> h[i]; }; for (int i = 1; i <= q; i++) { int y; cin >> y; queries.push_back(make_pair(y, i)); }; if (1LL * n * q <= 1e6) return SUBTASK_5_8::Solve(), 0; SUBTASK_67::Solve(); };

Compilation message (stderr)

pilot.cpp: In function 'int main()':
pilot.cpp:89:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |         freopen("MAIN.INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
pilot.cpp:90:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   90 |         freopen("MAIN.OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
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