結果

問題 No.1514 Squared Matching
ユーザー Aoxiang CuiAoxiang Cui
提出日時 2021-10-07 22:18:27
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 1,889 ms / 4,000 ms
コード長 4,253 bytes
コンパイル時間 1,276 ms
コンパイル使用メモリ 117,600 KB
実行使用メモリ 509,624 KB
最終ジャッジ日時 2023-09-30 09:06:18
合計ジャッジ時間 30,575 ms
ジャッジサーバーID
(参考情報)
judge11 / judge12
このコードへのチャレンジ
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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 1 ms
4,380 KB
testcase_01 AC 1,889 ms
509,208 KB
testcase_02 AC 3 ms
4,376 KB
testcase_03 AC 2 ms
4,380 KB
testcase_04 AC 1 ms
4,376 KB
testcase_05 AC 1 ms
4,376 KB
testcase_06 AC 22 ms
11,996 KB
testcase_07 AC 319 ms
101,552 KB
testcase_08 AC 1,672 ms
490,912 KB
testcase_09 AC 1,365 ms
429,592 KB
testcase_10 AC 1,462 ms
465,124 KB
testcase_11 AC 1,519 ms
484,540 KB
testcase_12 AC 1,602 ms
498,048 KB
testcase_13 AC 1,622 ms
504,704 KB
testcase_14 AC 1,620 ms
507,240 KB
testcase_15 AC 1,651 ms
508,464 KB
testcase_16 AC 1,662 ms
509,064 KB
testcase_17 AC 1,607 ms
509,180 KB
testcase_18 AC 1,622 ms
509,348 KB
testcase_19 AC 1,640 ms
509,624 KB
testcase_20 AC 1,637 ms
509,540 KB
testcase_21 AC 1,624 ms
509,280 KB
testcase_22 AC 271 ms
106,440 KB
testcase_23 AC 608 ms
209,636 KB
testcase_24 AC 884 ms
307,016 KB
testcase_25 AC 1,256 ms
408,092 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 #

// #define LOCAL
#define _USE_MATH_DEFINES
#include <array>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <stack>
#include <list>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <algorithm>
#include <complex>
#include <cmath>
#include <numeric>
#include <bitset>
#include <functional>
#include <random>
#include <ctime>

using namespace std;

template <typename A, typename B>
ostream& operator <<(ostream& out, const pair<A, B>& a) {
  out << "(" << a.first << "," << a.second << ")";
  return out;
}
template <typename T, size_t N>
ostream& operator <<(ostream& out, const array<T, N>& a) {
  out << "["; bool first = true;
  for (auto& v : a) { out << (first ? "" : ", "); out << v; first = 0;} out << "]";
  return out;
}
template <typename T>
ostream& operator <<(ostream& out, const vector<T>& a) {
  out << "["; bool first = true;
  for (auto v : a) { out << (first ? "" : ", "); out << v; first = 0;} out << "]";
  return out;
}
template <typename T, class Cmp>
ostream& operator <<(ostream& out, const set<T, Cmp>& a) {
  out << "{"; bool first = true;
  for (auto& v : a) { out << (first ? "" : ", "); out << v; first = 0;} out << "}";
  return out;
}
template <typename U, typename T, class Cmp>
ostream& operator <<(ostream& out, const map<U, T, Cmp>& a) {
  out << "{"; bool first = true;
  for (auto& p : a) { out << (first ? "" : ", "); out << p.first << ":" << p.second; first = 0;} out << "}";
  return out;
}
#ifdef LOCAL
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
#else
#define trace(...) 42
#endif
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
  cerr << name << ": " << arg1 << endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
  const char* comma = strchr(names + 1, ',');
  cerr.write(names, comma - names) << ": " << arg1 << " |";
  __f(comma + 1, args...);
}

template <class T> auto vect(const T& v, int n) { return vector<T>(n, v); }
template <class T, class... D> auto vect(const T& v, int n, D... m) {
  return vector<decltype(vect(v, m...))>(n, vect(v, m...));
}

typedef long long int64;
typedef pair<int, int> ii;
#define SZ(x) (int)((x).size())
template <typename T> static constexpr T inf = numeric_limits<T>::max() / 2;
const int MOD = 1e9 + 7;
// const int MOD = 998244353;
mt19937 mrand(random_device{}());
int rnd(int x) { return mrand() % x; }
// mt19937_64 mrand(random_device{}());
// int64 rnd(int64 x) { return mrand() % x; }
template <class T> void out(const vector<T>& a) { for (int i = 0; i < SZ(a); ++i) cout << a[i] << " \n"[i + 1 == SZ(a)]; }
template <class T> bool ckmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template <class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
template <class T> void dedup(vector<T>& v) { sort(v.begin(), v.end()); v.erase(unique(v.begin(), v.end()), v.end()); }
void add(int& x, int y) { x += y; if (x >= MOD) x -= MOD; }

struct fast_ios {
  fast_ios() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
  };
} fast_ios_;

const int N = 5e7 + 10;
bitset<N> flag;
int minp[N];
vector<int> prime;

void prime_gen(int n = N) {
  // fill(flag, flag + n, false);
  for (int i = 2; i < n; ++i) {
    if (!flag[i]) {
      prime.push_back(i);
      minp[i] = i;
    }
    for (int j = 0, k; j < SZ(prime) && (k = prime[j] * i) < n; ++j) {
      flag[k] = true;
      if (i % prime[j]) {
        minp[k] = prime[j];
      } else {
        minp[k] = minp[i];
        break;
      }
    }
  }
  trace(SZ(prime));
}

int main() {
  int n;
  cin >> n;
  prime_gen(n + 1);

  vector<short> dp(n + 1);
  for (int i = 1, ni, k = 1; i <= n; i = ni, ++k) {
    ni = min(i + k * 2 + 1, n + 1);
    for (int j = i; j < ni; ++j) dp[j] = k;
  }
  vector<int> f(n + 1);
  f[1] = 1;
  int64 ret = dp[n];
  for (int k = 2; k <= n; ++k) {
    // if (k % 1000000 == 0) trace(k);
    int p = minp[k];
    f[k] = f[k / p];
    if (f[k] % p == 0) {
      f[k] /= p;
    } else {
      f[k] *= p;
    }
    ret += dp[n / f[k]];
  }
  cout << ret << '\n';
  return 0;
}
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