結果

問題 No.2217 Suffix+
ユーザー miscalcmiscalc
提出日時 2023-02-17 21:41:36
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 265 ms / 2,000 ms
コード長 2,707 bytes
コンパイル時間 4,459 ms
コンパイル使用メモリ 262,232 KB
実行使用メモリ 6,948 KB
最終ジャッジ日時 2024-07-19 12:52:12
合計ジャッジ時間 8,066 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
このコードへのチャレンジ
(要ログイン)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
6,812 KB
testcase_01 AC 2 ms
6,940 KB
testcase_02 AC 2 ms
6,944 KB
testcase_03 AC 2 ms
6,940 KB
testcase_04 AC 2 ms
6,944 KB
testcase_05 AC 2 ms
6,940 KB
testcase_06 AC 1 ms
6,940 KB
testcase_07 AC 2 ms
6,940 KB
testcase_08 AC 2 ms
6,940 KB
testcase_09 AC 2 ms
6,944 KB
testcase_10 AC 2 ms
6,944 KB
testcase_11 AC 2 ms
6,940 KB
testcase_12 AC 2 ms
6,940 KB
testcase_13 AC 2 ms
6,944 KB
testcase_14 AC 18 ms
6,940 KB
testcase_15 AC 16 ms
6,940 KB
testcase_16 AC 33 ms
6,944 KB
testcase_17 AC 24 ms
6,944 KB
testcase_18 AC 21 ms
6,940 KB
testcase_19 AC 118 ms
6,940 KB
testcase_20 AC 113 ms
6,944 KB
testcase_21 AC 26 ms
6,940 KB
testcase_22 AC 116 ms
6,940 KB
testcase_23 AC 104 ms
6,940 KB
testcase_24 AC 74 ms
6,940 KB
testcase_25 AC 74 ms
6,940 KB
testcase_26 AC 75 ms
6,940 KB
testcase_27 AC 75 ms
6,940 KB
testcase_28 AC 75 ms
6,948 KB
testcase_29 AC 215 ms
6,944 KB
testcase_30 AC 216 ms
6,940 KB
testcase_31 AC 214 ms
6,940 KB
testcase_32 AC 215 ms
6,944 KB
testcase_33 AC 216 ms
6,940 KB
testcase_34 AC 78 ms
6,944 KB
testcase_35 AC 2 ms
6,940 KB
testcase_36 AC 265 ms
6,940 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using pll = pair<ll, ll>;
using tlll = tuple<ll, ll, ll>;
constexpr ll INF = 1LL << 60;
template<class T> bool chmin(T& a, T b) {if (a > b) {a = b; return true;} return false;}
template<class T> bool chmax(T& a, T b) {if (a < b) {a = b; return true;} return false;}
ll safemod(ll A, ll M) {ll res = A % M; if (res < 0) res += M; return res;}
ll divfloor(ll A, ll B) {if (B < 0) A = -A, B = -B; return (A - safemod(A, B)) / B;}
ll divceil(ll A, ll B) {if (B < 0) A = -A, B = -B; return divfloor(A + B - 1, B);}
ll pow_ll(ll A, ll B) {if (A == 0 || A == 1) {return A;} if (A == -1) {return B & 1 ? -1 : 1;} ll res = 1; for (int i = 0; i < B; i++) {res *= A;} return res;}
ll logfloor(ll A, ll B) {assert(A >= 2); ll res = 0; for (ll tmp = 1; tmp <= B / A; tmp *= A) {res++;} return res;}
ll logceil(ll A, ll B) {assert(A >= 2); ll res = 0; for (ll tmp = 1; tmp < B; tmp *= A) {res++;} return res;}
ll arisum_ll(ll a, ll d, ll n) { return n * a + (n & 1 ? ((n - 1) >> 1) * n : (n >> 1) * (n - 1)) * d; }
ll arisum2_ll(ll a, ll l, ll n) { return n & 1 ? ((a + l) >> 1) * n : (n >> 1) * (a + l); }
ll arisum3_ll(ll a, ll l, ll d) { assert((l - a) % d == 0); return arisum2_ll(a, l, (l - a) / d + 1); }
template<class T> void unique(vector<T> &V) {V.erase(unique(V.begin(), V.end()), V.end());}
template<class T> void sortunique(vector<T> &V) {sort(V.begin(), V.end()); V.erase(unique(V.begin(), V.end()), V.end());}
#define FINALANS(A) do {cout << (A) << '\n'; exit(0);} while (false)
template<class T> void printvec(const vector<T> &V) {int _n = V.size(); for (int i = 0; i < _n; i++) cout << V[i] << (i == _n - 1 ? "" : " ");cout << '\n';}
template<class T> void printvect(const vector<T> &V) {for (auto v : V) cout << v << '\n';}
template<class T> void printvec2(const vector<vector<T>> &V) {for (auto &v : V) printvec(v);}
//*
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
//using mint = modint1000000007;
//using mint = modint;
//*/

int main()
{
  ll N, K;
  cin >> N >> K;
  vector<ll> A(N);
  for (ll i = 0; i < N; i++)
  {
    cin >> A.at(i);
  }

  auto isok = [&](ll x) -> bool
  {
    vector<ll> B(N);
    for (ll i = 0; i < N; i++)
    {
      B.at(i) = x - A.at(i);
    }

    ll k = 0;
    ll s = 0;
    for (ll i = 0; i < N; i++)
    {
      if (B.at(i) - s > 0)
      {
        ll tmp = divceil(B.at(i) - s, i + 1);
        k += tmp;
        s += tmp * (i + 1);
      }
    }
    return k <= K;
  };

  ll ok = 0, ng = 1e18;
  while (abs(ok - ng) > 1)
  {
    ll mid = (ok + ng) / 2;
    if (isok(mid))
      ok = mid;
    else
      ng = mid;
  }
  cout << ok << endl;
}
0