Submission #447303

#	Time	Username	Problem	Language	Result	Execution time	Memory
447303		XBoRickie	Kronican (COCI16_kronican)	C++11	100 / 100	1407 ms	8572 KiB

kronican

#include <bits/stdc++.h>
using namespace std;
// Typedef
typedef long double                ld;
typedef long long int              int64;
typedef unsigned long long int     uint64;
typedef std::pair<int, int>        PII;
typedef std::pair<int64, int64>    PLL;
typedef std::vector<int>           VI;
typedef std::vector<long long>     VLL;
// Define For-loop
#define FOR(i, j, k, in)           for (int i = (j); i < (k) ; i += (in))
#define FORW(i, j, k, in)          for (int i = (j); i <= (k); i += (in))
#define RFOR(i, j, k, in)          for (int i = (j); i >= (k); i -= (in))
// Define Data structure func
#define all(cont)                  cont.begin(), cont.end()
#define rall(cont)                 cont.rbegin(), cont.rend()
#define sz(cont)                   int((cont).size())
#define pb                         push_back
#define mp                         make_pair
#define fi                         first
#define se                         second
// Define number
#define IINF                       0x3f3f3f3f
#define LLINF                      1000111000111000111LL
#define PI                         3.1415926535897932384626433832795
// Other
#define lend                       '\n'
#define hardio(name)               freopen(name".inp","r",stdin), freopen(name".out","w",stdout);
void FastIO() { std::ios_base::sync_with_stdio(false); std::cin.tie(NULL); cin.exceptions(cin.failbit); srand(time(NULL)); }

const int MOD = 1e9 + 7, MOD2 = 1e9 + 9;
// ======================================================================

int n, k;
int a[30][30] = {};
int dp[1 << 21] = {};

int recur(int mask = 0) {
    if (__builtin_popcount(mask) == k) return 0;
    int &ans = dp[mask];
    if (ans != -1) return ans;

    ans = IINF;
    FOR(i, 0, n, 1) {
        if (!(mask & (1 << i))) continue;
        FOR(j, 0, n, 1) {
            if (i == j) continue;
            if (!(mask & (1 << j))) continue;
            ans = min(ans, recur(mask ^ (1 << i)) + a[i][j]);
        }
    }
    return ans;
}

int main(int argc, char* argv[]) {
    FastIO();

    memset(dp, -1, sizeof dp);
    cin >> n >> k;
    FOR(i, 0, n, 1) FOR(j, 0, n, 1) cin >> a[i][j];
    cout << recur((1 << n) - 1) << endl;

    return 0; }

• Subtask 1: 100 / 100