Submission #98487

#	Time	Username	Problem	Language	Result	Execution time	Memory
98487		pamaj	Kronican (COCI16_kronican)	C++14	90 / 100	2024 ms	8628 KiB

kronican

#include <bits/stdc++.h>
using namespace std;
const int maxn = 20;
#define int uint_fast32_t

#pragma GCC optimize ("Ofast")

int n, k;
int c[maxn][maxn];
int dp[1 << 20];

int solve(int mask)
{
	if(__builtin_popcount(mask) <= k) return 0;

	if(dp[mask] != -1) return dp[mask];

	int ans = 1e9;

	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j < n; j++)
		{
			if(i == j or !(mask & (1 << i)) or !(mask & (1 << j))) continue;

			ans = min(ans, solve(mask ^ (1 << i)) + c[i][j]);
		}
	}

	return dp[mask] = ans;
}


int32_t main()
{
	cin >> n >> k;

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

	memset(dp, -1, sizeof(dp));

	cout << solve((1 << n) - 1) << "\n";

}

Compilation message (stderr)

kronican.cpp: In function 'uint_fast32_t solve(uint_fast32_t)':
kronican.cpp:16:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(dp[mask] != -1) return dp[mask];
     ~~~~~~~~~^~~~~

• Subtask 1: 90 / 100