제출 #241830

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
241830		dung11112003	Kronican (COCI16_kronican)	C++11	80 / 100	59 ms	65540 KiB

kronican

#include <bits/stdc++.h>

#define taskname ""
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define for0(i, n) for (int i = 0; i < (int)(n); ++i)
#define for1(i, n) for (int i = 1; i <= (int)(n); ++i)
#define ford(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define fore(i, a, b) for (int i = (int)(a); i <= (int)(b); ++i)

using namespace std;

typedef long long ll;
typedef long double ld;
typedef complex <ld> cd;
typedef vector <cd> vcd;
typedef vector <int> vi;

template<class T> using v2d = vector <vector <T> >;
template<class T> bool uin(T &a, T b)
{
    return a > b ? (a = b, true) : false;
}
template<class T> bool uax(T &a, T b)
{
    return a < b ? (a = b, true) : false;
}

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

const int maxN = 20;

int n, k;
ll c[maxN][maxN], f[maxN][1 << maxN], g[1 << maxN];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cin >> n >> k;
    for0(i, n)
    {
        for0(j, n)
        {
            cin >> c[i][j];
        }
    }
    for0(i, n)
    {
        f[i][0] = 1e9;
        for (int mask = 1; mask < (1 << n); mask++)
        {
            f[i][mask] = min(f[i][mask & (mask - 1)], c[i][__builtin_ctz(mask)]);
        }
    }
    for (int mask = (1 << n) - 2; mask > 0; mask--)
    {
        g[mask] = 1e9;
        for0(i, n)
        {
            if (!(mask >> i & 1))
            {
                uin(g[mask], g[mask | (1 << i)] + f[i][mask]);
            }
        }
    }
    ll ans = 1e9;
    for0(mask, 1 << n)
    {
        if (__builtin_popcount(mask) == k)
        {
            uin(ans, g[mask]);
        }
    }
    cout << ans;
    return 0;
}

• Subtask 1: 80 / 100