oj.uz

답안 #1029297

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1029297 2024-07-20T15:38:44 Z avighna Progression (NOI20_progression) C++17
15 / 100
 3000 ms 101704 KB 
#include <bits/stdc++.h>

typedef long long ll;

class SparseTable {
public:
  ll maxPow;
  std::vector<ll> orig;
  std::vector<std::vector<ll>> table_min, table_max;

  SparseTable(const std::vector<ll> &x) {
    orig = x;
    const ll n = x.size();
    maxPow = std::floor(std::log2(n));
    table_min = std::vector<std::vector<ll>>(maxPow + 1, std::vector<ll>(n));
    table_max = std::vector<std::vector<ll>>(maxPow + 1, std::vector<ll>(n));
    for (ll i = 0; i < n; ++i) {
      table_min[0][i] = x[i];
      table_max[0][i] = x[i];
    }
    for (ll power = 1; power <= maxPow; ++power) {
      for (ll i = 0; i < n - (1 << (power - 1)); ++i) {
        table_min[power][i] =
            std::min(table_min[power - 1][i],
                     table_min[power - 1][i + (1 << (power - 1))]);
        table_max[power][i] =
            std::max(table_max[power - 1][i],
                     table_max[power - 1][i + (1 << (power - 1))]);
      }
    }
  }

  ll query_min(ll a, ll b) {
    if (a == b) {
      return orig[a];
    }
    ll powToUse = std::ceil(std::log2(b - a + 1)) - 1;
    return std::min(table_min[powToUse][a],
                    table_min[powToUse][b - (1 << powToUse) + 1]);
  }
  ll query_max(ll a, ll b) {
    if (a == b) {
      return orig[a];
    }
    ll powToUse = std::ceil(std::log2(b - a + 1)) - 1;
    return std::max(table_max[powToUse][a],
                    table_max[powToUse][b - (1 << powToUse) + 1]);
  }
};

ll BinarySearchMax(ll s, ll e, const std::function<bool(ll)> &f) {
  ll ans = s;
  while (s <= e) {
    ll m = s + (e - s) / 2;
    if (f(m)) {
      ans = m;
      s = m + 1;
    } else {
      e = m - 1;
    }
  }
  return ans;
}

int main() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(nullptr);

  ll n, q;
  std::cin >> n >> q;
  std::vector<ll> d(n);
  for (auto &i : d) {
    std::cin >> i;
  }

  while (q--) {
    ll t;
    std::cin >> t;
    ll l, r;
    std::cin >> l >> r;
    --l, --r;
    if (t == 1) {
      ll s, c;
      std::cin >> s >> c;
      for (ll i = l; i <= r; ++i) {
        d[i] += s + (i - l) * c;
      }
    } else if (t == 2) {
      ll s, c;
      std::cin >> s >> c;
      for (ll i = l; i <= r; ++i) {
        d[i] = s + (i - l) * c;
      }
    } else {
      std::vector<ll> diff(n);
      std::adjacent_difference(d.begin(), d.end(), diff.begin());
      SparseTable table(diff);
      ll ans = 1;
      if (l == r) {
        std::cout << ans << '\n';
        continue;
      }
      for (ll i = l; i <= r; ++i) {
        ans =
            std::max(ans, BinarySearchMax(i + 1, r,
                                          [&](ll m) {
                                            return table.query_min(i + 1, m) ==
                                                   table.query_max(i + 1, m);
                                          }) -
                              i + 1);
      }
      std::cout << ans << '\n';
    }
  }
}

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3029 ms 101704 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 672 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 25 ms 604 KB Output is correct
9 Correct 28 ms 604 KB Output is correct
10 Correct 30 ms 856 KB Output is correct
11 Correct 50 ms 604 KB Output is correct
12 Correct 28 ms 604 KB Output is correct
13 Correct 50 ms 636 KB Output is correct
14 Correct 49 ms 604 KB Output is correct
15 Correct 29 ms 604 KB Output is correct
16 Correct 25 ms 604 KB Output is correct
17 Correct 25 ms 604 KB Output is correct
18 Correct 28 ms 600 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 460 KB Output is correct
21 Correct 1 ms 348 KB Output is correct

Subtask #3
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3075 ms 101660 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3028 ms 101608 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3075 ms 101660 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3029 ms 101704 KB Time limit exceeded
2 Halted 0 ms 0 KB -