제출 #81739

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
81739		ngot23	Kronican (COCI16_kronican)	C++11	0 / 100	241 ms	8896 KiB

kronican

#include<bits/stdc++.h>
#define rep(i, a, b) for(int i=(a) ; i<=(b) ; ++i)
#define Task ""
using namespace std;
const int N=21;
int dp[1ll<<N], c[N][N], n, k, luu[N], dem;

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen(Task".inp", "r", stdin);
    //freopen(Task".out", "w", stdout);
    cin >> n >> k;
    rep(i, 1, n)
        rep(j, 1, n) cin >> c[i][j];
    memset(dp, 0x32, sizeof dp);
    rep(i, 0, (1ll<<n)-1) {
        if(__builtin_popcount(i)<=k) dp[i]=0;
    }
    rep(i, 0, (1ll<<n)-1) {
        int num=__builtin_popcount(i);
        if(num<=k) continue;
        dem=0;
        rep(j, 1, n) {
            if((i>>(j-1))&1) luu[++dem]=j;
        }
        rep(j, 1, dem) {
            int state=i^(1ll<<(luu[j]-1));
            int xx=1000000000;
            rep(k1, 1, dem) {
                if(j==k1) continue;
                xx=min(xx, c[j][k1]);
            }
            dp[i]=min(dp[i], dp[state]+xx);
        }
    }
    cout << dp[(1ll<<n)-1];
    return 0;
}

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