結果

問題 No.1251 絶対に間違ってはいけない最小化問題
コンテスト
ユーザー msm1993
提出日時 2020-10-23 15:28:19
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 60 ms / 2,000 ms
コード長 1,292 bytes
コンパイル時間 1,825 ms
コンパイル使用メモリ 175,704 KB
実行使用メモリ 6,944 KB
最終ジャッジ日時 2024-07-21 10:06:16
合計ジャッジ時間 15,989 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge1
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ファイルパターン 結果
sample AC * 3
other AC * 42
権限があれば一括ダウンロードができます
コンパイルメッセージ
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/istream:39,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/sstream:38,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/complex:45,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ccomplex:39,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/x86_64-pc-linux-gnu/bits/stdc++.h:54,
                 from main.cpp:2:
In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long double) [with _CharT = char; _Traits = std::char_traits<char>]',
    inlined from 'int main()' at main.cpp:59:41:
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ostream:233:25: warning: 'med' may be used uninitialized [-Wmaybe-uninitialized]
  233 |       { return _M_insert(__f); }
      |                ~~~~~~~~~^~~~~
main.cpp: In function 'int main()':
main.cpp:30:8: note: 'med' was declared here
   30 |     ld med;
      |        ^~~

ソースコード

diff # 

#include <algorithm>
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define all(x) (x).begin(), (x).end()
#define ll long long
#define ld long double
#define INF 1000000000000000000
typedef pair<ll, ll> pll;
typedef pair<int, int> pint;

vector<pll> A;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int N;
    cin >> N;
    A.resize(N);
    ll sum = 0, ssum;
    rep(i, N) { cin >> A[i].first; }

    rep(i, N) {
        cin >> A[i].second;
        sum += A[i].second;
    }

    ssum = sum;
    ld med;
    sort(all(A));
    if (sum % 2 == 0) {
        ll bd = sum / 2;
        rep(i, N) {
            ssum -= A[i].second;
            if (ssum == bd) {
                med = (A[i + 1].first + A[i].first) / 2;
                break;
            }
            if (ssum < bd) {
                med = A[i].first;
                break;
            }
        }
    } else {
        ll bd = sum / 2;
        rep(i, N) {
            ssum -= A[i].second;
            if (ssum <= bd) {
                med = A[i].first;
                break;
            }
        }
    }

    ld ans = 0;
    rep(i, N) { ans += A[i].second * abs(A[i].first - med); }

    cout << fixed << setprecision(5) << med << " " << (ll)ans << endl;
}
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