Submission #589409

#	Time	Username	Problem	Language	Result	Execution time	Memory
589409		nguyen31hoang08minh2003	Kronican (COCI16_kronican)	C++14	100 / 100	955 ms	5436 KiB

kronican

/*
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|.\/\/.|
|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|\/\/\/|
|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|/./\.\|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|\.\/./|
|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|/\/\/\|
|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|./\/\.|
+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+
*/
#include <bits/stdc++.h>
#define fore(i, a, b) for (signed i = (a), i##_last = (b); i < i##_last; ++i)
#define fort(i, a, b) for (signed i = (a), i##_last = (b); i <= i##_last; ++i)
#define ford(i, a, b) for (signed i = (a), i##_last = (b); i >= i##_last; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define getbit(x, i) ((x) & (1 << (i)))
using namespace std;
using ll = long long;
using ld = long double;

template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};

typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<ll> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;

int countBits(int x) {
    int res = 0;
    for (; x; x -= x & -x)
        ++res;
    return res;
}

const int maxN = 20, inf = 0x3f3f3f3f;

int n, k, c[maxN][maxN];

int DP(int mask) {
    static int dp[1 << maxN];
    static bool seen[1 << maxN];
    if (!seen[mask]) {
        seen[mask] = true;
        if (countBits(mask) <= k)
            return 0;
        dp[mask] = inf;
        fore(x, 0, n)
            if (getbit(mask, x)) {
                fore(y, 0, n) {
                    if (x == y || !getbit(mask, y))
                        continue;
                    mini(dp[mask], c[x][y] + DP(mask ^ (1 << x)));
                }
            }
    }
    return dp[mask];
}

int main() {
    #ifdef LOCAL
        freopen("input.INP", "r", stdin);
    #endif // LOCAL
    cin.tie(0) -> sync_with_stdio(0);
    cout.tie(0);
    cin >> n >> k;
    fore(x, 0, n)
        fore(y, 0, n)
            cin >> c[x][y];
    cout << DP((1 << n) - 1) << '\n';
    return 0;
}

• Subtask 1: 100 / 100