結果

問題 No.190 Dry Wet Moist
ユーザー hamrayhamray
提出日時 2021-06-25 03:47:32
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 106 ms / 2,000 ms
コード長 5,941 bytes
コンパイル時間 2,207 ms
コンパイル使用メモリ 181,904 KB
実行使用メモリ 13,440 KB
最終ジャッジ日時 2024-06-25 07:38:46
合計ジャッジ時間 3,764 ms
ジャッジサーバーID
(参考情報)
judge1 / judge4
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
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 2 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 2 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 3 ms
5,376 KB
testcase_12 AC 44 ms
7,552 KB
testcase_13 AC 57 ms
8,320 KB
testcase_14 AC 43 ms
7,424 KB
testcase_15 AC 62 ms
8,704 KB
testcase_16 AC 76 ms
9,600 KB
testcase_17 AC 11 ms
5,376 KB
testcase_18 AC 36 ms
6,912 KB
testcase_19 AC 75 ms
9,600 KB
testcase_20 AC 53 ms
8,192 KB
testcase_21 AC 7 ms
5,376 KB
testcase_22 AC 70 ms
8,064 KB
testcase_23 AC 106 ms
13,440 KB
testcase_24 AC 96 ms
12,032 KB
testcase_25 AC 2 ms
5,376 KB
testcase_26 AC 2 ms
5,376 KB
testcase_27 AC 62 ms
9,216 KB
testcase_28 AC 28 ms
6,720 KB
testcase_29 AC 37 ms
7,296 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>
//#include <atcoder/all>
//using namespace atcoder;
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
 
using namespace std;
 
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<int, int> pii;
typedef pair<long long, long long> PLL;
typedef pair<int, PII> TIII;
 
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
 
 
#define FOR(i, s, n) for (int i = s; i < (int)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto &a : x)
#define all(x) x.begin(), x.end()
 
#define MOD 1000000007
 
template<class T1, class T2> inline bool chmax(T1 &a, T2 b) {if (a < b) {a = b; return true;} return false;}
template<class T1, class T2> inline bool chmin(T1 &a, T2 b) {if (a > b) {a = b; return true;} return false;}
const double EPS = 1e-12, PI = acos(-1);
const double pi = 3.141592653589793238462643383279;
//ここから編集    
typedef string::const_iterator State;
ll GCD(ll a, ll b){
  return (b==0)?a:GCD(b, a%b);
}
ll LCM(ll a, ll b){
  return a/GCD(a, b) * b;
}
template< int mod >
struct ModInt {
  int x;
 
  ModInt() : x(0) {}
 
  ModInt(int64_t y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}
 
  ModInt &operator+=(const ModInt &p) {
    if((x += p.x) >= mod) x -= mod;
    return *this;
  }
 
  ModInt &operator-=(const ModInt &p) {
    if((x += mod - p.x) >= mod) x -= mod;
    return *this;
  }
 
  ModInt &operator*=(const ModInt &p) {
    x = (int) (1LL * x * p.x % mod);
    return *this;
  }
 
  ModInt &operator/=(const ModInt &p) {
    *this *= p.inverse();
    return *this;
  }
 
  ModInt operator-() const { return ModInt(-x); }
 
  ModInt operator+(const ModInt &p) const { return ModInt(*this) += p; }
 
  ModInt operator-(const ModInt &p) const { return ModInt(*this) -= p; }
 
  ModInt operator*(const ModInt &p) const { return ModInt(*this) *= p; }
 
  ModInt operator/(const ModInt &p) const { return ModInt(*this) /= p; }
 
  bool operator==(const ModInt &p) const { return x == p.x; }
 
  bool operator!=(const ModInt &p) const { return x != p.x; }
 
  ModInt inverse() const {
    int a = x, b = mod, u = 1, v = 0, t;
    while(b > 0) {
      t = a / b;
      swap(a -= t * b, b);
      swap(u -= t * v, v);
    }
    return ModInt(u);
  }
 
  ModInt pow(int64_t n) const {
    ModInt ret(1), mul(x);
    while(n > 0) {
      if(n & 1) ret *= mul;
      mul *= mul;
      n >>= 1;
    }
    return ret;
  }
 
  friend ostream &operator<<(ostream &os, const ModInt &p) {
    return os << p.x;
  }
 
  friend istream &operator>>(istream &is, ModInt &a) {
    int64_t t;
    is >> t;
    a = ModInt< mod >(t);
    return (is);
  }
 
  static int get_mod() { return mod; }
};
 
using modint = ModInt< 1000000007 >;
template< typename T >
struct Combination {
  vector< T > _fact, _rfact, _inv;
 
  Combination(int sz) : _fact(sz + 1), _rfact(sz + 1), _inv(sz + 1) {
    _fact[0] = _rfact[sz] = _inv[0] = 1;
    for(int i = 1; i <= sz; i++) _fact[i] = _fact[i - 1] * i;
    _rfact[sz] /= _fact[sz];
    for(int i = sz - 1; i >= 0; i--) _rfact[i] = _rfact[i + 1] * (i + 1);
    for(int i = 1; i <= sz; i++) _inv[i] = _rfact[i] * _fact[i - 1];
  }
 
  inline T fact(int k) const { return _fact[k]; }
 
  inline T rfact(int k) const { return _rfact[k]; }
 
  inline T inv(int k) const { return _inv[k]; }
 
  T P(int n, int r) const {
    if(r < 0 || n < r) return 0;
    return fact(n) * rfact(n - r);
  }
 
  T C(int p, int q) const {
    if(q < 0 || p < q) return 0;
    return fact(p) * rfact(q) * rfact(p - q);
  }
 
  T H(int n, int r) const {
    if(n < 0 || r < 0) return (0);
    return r == 0 ? 1 : C(n + r - 1, r);
  }
};
 
ll modpow(ll x, ll n, ll mod) {
  ll res = 1;
  while(n) {
    if(n&1) res = (res * x) % mod;
    x = (x * x) % mod;
    n >>= 1;
  }
  return res;
} 
inline long long mod(long long a, long long m) {
    return (a % m + m) % m;
}

template<typename T> 
struct BIT{
  int N;
  std::vector<T> node[2];

  BIT(int n){
    N = n;
    node[0].resize(N+10);
    node[1].resize(N+10);
  }

  /* a: 1-indexed */
  void add(int a, T x, int b){
    for(int i=a; i<(int)node[b].size(); i += i & -i) node[b][i] += x;
  }
  void rangeadd(int l, int r, T x) {
    add(l, x, 0);
    add(r+1, -x, 0);
    add(l, x*(l-1), 1);
    add(r+1, -x*r, 1);
  }

  /* [1, a] */
  T sum(int a, int b){
    T res = 0;
    for(int x=a; x>0; x -= x & -x) res += node[b][x];
    return res;
  }

  T prefixsum(int i) {
    return sum(i, 0) * i - sum(i, 1);
  }
  /* [l, r] */
  T rangesum(int l, int r){
    return prefixsum(r) - prefixsum(l-1);
  }
};

int main()
{
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(20);

  int N; cin >> N;
  vector<int> a(2*N);
  REP(i,2*N) cin >> a[i];

  sort(all(a));
  int dry=0,wet=0,moist=0;
  {
    int zero=0;
    REP(i,2*N) if(a[i] == 0) zero++;

    map<int, int> mp;
    REP(i,2*N) mp[a[i]]++;
    int cnt = 0;
    for(auto e: mp) {
      if(e.first >= 0) break;
      cnt += min(e.second, mp[-e.first]);
    }
    moist = zero/2 + cnt;
  }
  {
    int l = 0, r = 2*N-1;
    int skip = 0;
    int idx = 2*N;
    REP(i,2*N) {
      if(a[i] >= 0) {
        idx = i;
        break;
      }
    }
    while(l<r && a[l] < 0 && a[r] >= 0) {
      if(a[l] + a[r] < 0) {
        dry++;
        l++;
        r--;
      }else{
        r--;
      }
    }
    
    if(a[l]<0)dry += (r-l+1)/2;
    
  }
  {
    reverse(all(a));
    int l = 0, r = 2*N-1;
    int idx = N;
    REP(i,2*N) {
      if(a[i] <= 0) {
        idx = i;
        break;
      }
    }
    while(l<r && a[l] > 0 && a[r] <= 0) {
      if(a[l] + a[r] > 0) {
        wet++;
        l++;
        r--;
      }else{
        r--;
      }
    }

    if(a[l]>0)wet += (r-l+1)/2;
    
  }
  cout << dry << " " << wet <<  " " << moist << endl;
  return 0;
}
0