제출 #1332633

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1332633		retarde	Coin Collecting (JOI19_ho_t4)	C++20	0 / 100	0 ms	344 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define pf push_front
#define mp make_pair
#define fi first
#define se second
#define int long long
#define all(x) (x).begin(), (x).end()

typedef long double ld;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<vector<bool>> vvb;
typedef vector<vector<ll>> vvll;
typedef vector<string> vs;
typedef vector<vector<string>> vvs;
typedef vector<char> vc;
typedef vector<vector<char>> vvc;
typedef map<int, int> mii;
typedef unordered_map<int, int> umii;

const int mod = 1e9 + 7;
const int inf = INTMAX_MAX;
const bool tc = false;

int d(pii a1, pii a2) {
    return (abs(a1.fi-a2.fi) + abs(a1.se-a2.se));
}

inline void solve() {
    int n; cin >> n;
    vector<pii> pts(2 * n); for (int i = 0; i < 2*n; i++) cin >> pts[i].fi >> pts[i].se;

    int ans = 1e18;
    for (int i = 0; i < ((int)1 << (int)2*n); i++) {
        vector<pii> tp, bt;
        for (int j = 0; j < 2 * n; j++) {
            if (i & (1 << j)) tp.pb(pts[j]);
            else bt.pb(pts[j]);
        }
        
        if (tp.size() == bt.size()) {
            int cur = 0; sort(all(tp)); sort(all(bt));
            for (int j = 0; j < n; j++) cur += d(tp[j], {j+1,1}); 
            for (int j = 0; j < n; j++) cur += d(bt[j], {j+1,0});
            ans = min(ans, cur);
        }
    }
    cout << ans << '\n';
}

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

signed main() {
    ios::sync_with_stdio(false);
    cout.tie(0);
    cin.tie(0);
    //setIO();

    int t = 1;
    if (tc) {
        cin >> t;
    }

    while (t--) {
        solve();
    }
}

컴파일 시 표준 에러 (stderr) 메시지

joi2019_ho_t4.cpp: In function 'void setIO(std::string)':
joi2019_ho_t4.cpp:60:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t4.cpp:61:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   61 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 8
• Subtask 2: 0 / 29
• Subtask 3: 0 / 63