結果

問題 No.1028 闇討ち
ユーザー hirono999hirono999
提出日時 2020-04-18 11:52:07
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 3,577 bytes
コンパイル時間 2,065 ms
コンパイル使用メモリ 177,448 KB
実行使用メモリ 28,800 KB
最終ジャッジ日時 2024-10-03 23:21:11
合計ジャッジ時間 5,766 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
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 2 ms
5,248 KB
testcase_01 AC 2 ms
5,248 KB
testcase_02 AC 2 ms
5,248 KB
testcase_03 AC 2 ms
5,248 KB
testcase_04 AC 2 ms
5,248 KB
testcase_05 WA -
testcase_06 AC 3 ms
5,248 KB
testcase_07 AC 2 ms
5,248 KB
testcase_08 AC 3 ms
5,248 KB
testcase_09 WA -
testcase_10 WA -
testcase_11 AC 63 ms
9,344 KB
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 AC 48 ms
8,192 KB
testcase_16 AC 275 ms
28,672 KB
testcase_17 WA -
testcase_18 WA -
testcase_19 WA -
testcase_20 WA -
testcase_21 WA -
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>
const long long INF = 1LL << 60;
const long long MOD = 1000000007;
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rep1(i, n) for (ll i = 1; i <= (n); ++i)
#define rrep(i, n) for (ll i = (n - 1); i >= 0; --i)
#define perm(c) sort(ALL(c));for(bool c##p=1;c##p;c##p=next_permutation(ALL(c)))
#define ALL(obj) (obj).begin(), (obj).end()
#define RALL(obj) (obj).rbegin(), (obj).rend()
#define pb push_back
#define to_s to_string
#define len(v) (ll)v.size()
#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end())
#define print(x) cout << (x) << '\n'
#define drop(x) cout << (x) << '\n', exit(0)
#define debug(x) cout << #x << ": " << (x) << '\n'
using namespace std;
using ll = long long;
typedef pair<ll, ll> P;
typedef vector<ll> vec;
typedef vector<vector<ll>> vec2;
typedef vector<vector<vector<ll>>> vec3;
template<class S, class T> inline bool chmax(S &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class S, class T> inline bool chmin(S &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
inline ll msb(ll v) { return 1 << (31 - __builtin_clzll(v)); }
inline ll devc(ll x, ll y) { return (x + y - 1) / y; }

struct IoSetup {
    IoSetup() {
        cin.tie(nullptr);
        ios::sync_with_stdio(false);
        cout << fixed << setprecision(10);
        cerr << fixed << setprecision(10);
    }
} iosetup;

template< typename T1, typename T2 >
ostream &operator << (ostream &os, const pair< T1, T2 > &p) {
    os << p.first << " " << p.second;
    return os;
}

template< typename T1, typename T2 >
istream &operator >> (istream &is, pair< T1, T2 > &p) {
    is >> p.first >> p.second;
    return is;
}

template< typename T >
ostream &operator << (ostream &os, const vector< T > &v){
    for (int i = 0; i < (int)v.size(); ++i) {
        os << v[i] << (i + 1 != v.size() ? " " : "");
    }
    return os;
}

template< typename T >
istream &operator >>  (istream &is, vector< T > &v){
    for(T &in : v) is >> in;
    return is;
}

/*---------------------------------    Tools    ------------------------------------------*/
template< typename T >
vector<T> cumsum(const vector<T> &X){
    vector<T> res(X.size() + 1, 0);
    for(int i = 0; i < X.size(); ++i) res[i + 1] += res[i] + X[i];
    return res;
}

//f : 単調性の関数
template< typename S, typename T, typename F>
pair<T, T> bisearch(S left, T right, F f) {
    while(abs(right - left) > 1){
        T mid = (right + left) / 2;
        if(f(mid)) right = mid;
        else left = mid;
    }
    return {left, right};
}

/*------------------------------- Main Code Here -----------------------------------------*/

int main()
{
    ll N;
    cin >> N;
    vec2 A(N, vec(N));
    rep(i, N) cin >> A[i];

    vector<vector<P>> plot(N);
    rep(i, N) rep(j, N) plot[--A[i][j]].pb({i, j});

    ll ans = 0;
    rep(i, N){
        auto f = [&](double x) {
            double sum = 0;
            rep(j, N){
                auto p = plot[i][j];
                double X = p.first, Y = p.second;
                X -= x;
                X = abs(X), Y = abs(Y);
                sum += X + Y - min(X, Y);
            }
            return sum;
        };

        double low = -1, high = N;
        while(high - low > 0.0000001){
            double mid_left = high / 3 + low * 2 / 3;
            double mid_right = high * 2 / 3 + low / 3;
            if(f(mid_left) >= f(mid_right)) low = mid_left;
            else high = mid_right;
        }

        ll sum = INF;
        chmin(sum, f(high));
        ans += sum;
    }
    print(ans);

    return 0;
}
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