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Submission #98489

# Submission time Handle Problem Language Result Execution time Memory
98489 2019-02-23T18:57:01 Z pamaj Kronican (COCI16_kronican) C++14
90 / 100
 2000 ms 8704 KB 
#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(const 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()
{	
	ios::sync_with_stdio(false), cin.tie(nullptr);
	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

kronican.cpp: In function 'uint_fast32_t solve(const 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
90.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 8576 KB Output is correct
2 Correct 9 ms 8576 KB Output is correct
3 Correct 10 ms 8576 KB Output is correct
4 Correct 10 ms 8576 KB Output is correct
5 Correct 22 ms 8704 KB Output is correct
6 Correct 41 ms 8696 KB Output is correct
7 Correct 79 ms 8576 KB Output is correct
8 Correct 161 ms 8668 KB Output is correct
9 Execution timed out 2055 ms 8576 KB Time limit exceeded
10 Correct 149 ms 8576 KB Output is correct