Submission #1130108

#	Time	Username	Problem	Language	Result	Execution time	Memory
1130108		qrn	Kronican (COCI16_kronican)	C++20	100 / 100	391 ms	8516 KiB

kronican

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

template<class ISqr, class T>
ISqr& operator>>(ISqr& is, vector<T>& v) { for (auto& x : v) is >> x; return is; }

#define SPEED                     \
    ios_base::sync_with_stdio(0); \
    cin.tie(NULL);                \
    cout.tie(NULL);

#define pb push_back
#define ins insert
#define fi first
#define se second

#define endl "\n"
#define ALL(x) x.begin(), x.end()
#define sz(x) x.size()
#define intt long long
#define cntone(x) __builtin_popcount(x)

const intt maksN = 2e5 + 31; 
const intt inf = 1e18;
const intt mod = 1e9 + 7;

intt dx[4] = {1, -1, 0, 0};
intt dy[4] = {0, 0, 1, -1};

void solve() {  
    intt n, m;
    cin >> n >> m;
    vector<vector<intt>>C(n + 1, vector<intt>(n + 1, 0ll));
    vector<intt>dp((1 << n), inf);

    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            cin >> C[i][j];
        }
    }

    if(n == m) {
        cout << 0 << endl;
        return;
    }
  
    dp[(1<<n) - 1] = 0ll;

    intt ans = inf;
    for(intt mask = (1ll << n) - 1; mask >= 0; mask--) {
        if(cntone(mask) <= m) {
            ans = min(ans, dp[mask]);
            continue;
        }
        vector<intt>idxs;
        for(intt i = 0; i < n; i++) {
            if(((1 << i) & mask)) {
                idxs.pb(i);
            }
        }
        for(intt i = 0; i < idxs.size(); i++) {
            for(int j =0; j < idxs.size(); j++) {
                intt num1 = idxs[i], num2 = idxs[j];
                if(num1 == num2) continue;
                dp[mask ^ (1 << num1)] = min(dp[mask ^ (1 << num1)], dp[mask] + C[num1][num2]); 
            }
        }
    }
    cout << ans << endl;
}

signed main() {
    SPEED;  

    intt tst = 1;
    // cin >> tst;
    while (tst--) {
        solve();
    }
}

• Subtask 1: 100 / 100