Submission #1024015

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024015		kustizus	Kronican (COCI16_kronican)	C++17	100 / 100	735 ms	4700 KiB

kronican

#include <bits/stdc++.h>
#define ll long long int
using namespace std;
const int N = 21;
int n, k, a[N][N], dp[1 << N];
int Solve(int mask)
{
    if (__builtin_popcount(mask) == k)
        return 0;
    int &res = dp[mask];
    if (res != -1)
        return res;
    res = 1e9;
    vector<int> now;
    for (int i = 0; i < n; i++)
        if (mask & (1 << i))
            now.push_back(i);
    for (int i = 0; i < now.size(); i++)
        for (int j = 0; j < now.size(); j++)
            if (i != j)
                res = min(res, Solve(mask ^ (1 << now[i])) + a[now[i]][now[j]]);
    return res;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    // freopen ("file.inp","r",stdin);
    // freopen ("file.out","w",stdout);
    cin >> n >> k;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < n; j++)
            cin >> a[i][j];
    for (int i = 0; i < (1 << n); i++)
        dp[i] = -1;
    cout << Solve((1 << n) - 1);
    return 0;
}

Compilation message (stderr)

kronican.cpp: In function 'int Solve(int)':
kronican.cpp:18:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (int i = 0; i < now.size(); i++)
      |                     ~~^~~~~~~~~~~~
kronican.cpp:19:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |         for (int j = 0; j < now.size(); j++)
      |                         ~~^~~~~~~~~~~~

• Subtask 1: 100 / 100