Submission #81761

#	Time	Username	Problem	Language	Result	Execution time	Memory
81761		ngot23	Kronican (COCI16_kronican)	C++11	100 / 100	251 ms	4748 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];
    rep(i, 0, (1ll<<n)-1) {
        if(__builtin_popcount(i)<=k) dp[i]=0;
        else dp[i]=1000000000;
    }
    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[luu[j]][luu[k1]]);
            }
            dp[i]=min(dp[i], dp[state]+xx);
        }
    }
    cout << dp[(1ll<<n)-1];
    return 0;
}

• Subtask 1: 100 / 100