結果

問題 No.1251 絶対に間違ってはいけない最小化問題
ユーザー micheeeeell1001micheeeeell1001
提出日時 2020-10-09 21:46:11
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 2,778 bytes
コンパイル時間 2,100 ms
コンパイル使用メモリ 208,676 KB
実行使用メモリ 6,528 KB
最終ジャッジ日時 2024-07-20 10:22:13
合計ジャッジ時間 13,762 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge5
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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 WA -
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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:4:
In member function 'std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char; _Traits = std::char_traits<char>]',
    inlined from 'int main()' at main.cpp:108:37:
/home/linuxbrew/.linuxbrew/Cellar/gcc@12/12.3.0/include/c++/12/ostream:202:25: warning: 'res' may be used uninitialized [-Wmaybe-uninitialized]
  202 |       { return _M_insert(__n); }
      |                ~~~~~~~~~^~~~~
main.cpp: In function 'int main()':
main.cpp:96:12: note: 'res' was declared here
   96 |         ll res;
      |            ^~~
In function 'bool chmin(T&, T) [with T = long long int]',
    inlined from 'int main()' at main.cpp:104:18:
main.cpp:62:23: warning: 'res' may be used uninitialized [-Wmaybe-uninitialized]
   62 | bool chmin(T &a, T b){if(a > b){a = b; return true;} return false;}
      |                       ^~
main.cpp: In function 'int main()':
main.cpp:96:12: note: 'res' was declared here
   96 |         ll res;
      |            ^~~

ソースコード

diff # 

#ifdef LOCAL
#define _GLIBCXX_DEBUG
#endif
#include<bits/stdc++.h>
using namespace std;
#define rep(i,s,t) for(ll i = (ll)(s); i < (ll)(t); i++)
#define rrep(i,s,t) for(ll i = (ll)(s-1);(ll)(t) <= i; i--)
#define all(x) (x).begin(), (x).end()
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> Pll;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<vvl> vvvl;
constexpr ll INF = numeric_limits<ll>::max()/4;
constexpr ll n_max = 2e6+10;
#define int ll
const long double pi = 3.14159265358979323846;

template <typename A, typename B>
string to_string(pair<A, B> p);
string to_string(const string &s) {return '"' + s + '"';}
string to_string(const char *c) {return to_string((string) c);}
string to_string(bool b) {return (b ? "true" : "false");}
template <size_t N>
string to_string(bitset<N> v){
    string res = "";
    for(size_t i = 0; i < N; i++) res += static_cast<char>('0' + v[i]);
    return res;
}
template <typename A>
string to_string(A v) {
    bool first = true;
    string res = "{";
    for(const auto &x : v) {
        if(!first) res += ", ";
        first = false;
        res += to_string(x);
    }
    res += "}";
    return res;
}
template <typename A, typename B>
string to_string(pair<A, B> p){return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";}

void debug_out() {cerr << endl;}
template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
    cerr << " " << to_string(H);
    debug_out(T...);
}

#ifdef LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

template<class T>
bool chmax(T &a, T b){if(a < b){a = b; return true;} return false;}
template<class T>
bool chmin(T &a, T b){if(a > b){a = b; return true;} return false;}

signed main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    ll n; cin >> n;
    vector<Pll> a(n);
    rep(i, 0, n) cin >> a[i].first;
    rep(i, 0, n) cin >> a[i].second;
    sort(all(a));
    auto check = [&](ll x) {
        ll res = 0;
        
        rep(i, 0, n) {
            if (x > a[i].first)
                res += a[i].second;
            else if (x < a[i].first)
                res -= a[i].second;
        }

        return res <= 0;
    };

    ll ok = -n_max;
    ll ng = n_max;

    while(abs(ok - ng) > 1){
        ll x = (ok + ng) / 2;
        if (check(x)) ok = x;
        else
            ng = x;
    }
    ll ans = INF, fans = -1;
    auto calc = [&](ll x) {
        ll res;
        rep(i, 0, n) {
            res += abs(a[i].first - x) * a[i].second;
        }
        return res;
    };

    rep(i, -100, 100){
        if (chmin(ans, calc(ok + i))) fans = (ok + i);
        debug(ok + i, calc(ok + i));
    }

    cout << fans << " " << calc(fans) << "\n";
}
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