Submission #165766

#	Time	Username	Problem	Language	Result	Execution time	Memory
165766		asifthegreat	Kronican (COCI16_kronican)	C++14	100 / 100	1565 ms	12156 KiB

kronican

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

const int N = 21;

int cost[N][N];
int dp[3000000];
int n,k;

bool Check(int x,int bit){return 1&(x>>bit);}
int Set(int x,int bit){return x|(1<<bit);}

int call(int mask){
	if(__builtin_popcount(mask) == n-k)return 0;
	if(dp[mask] != -1)return dp[mask];
	int &ret = dp[mask];
	ret = 1<<30;
	for(int i = 0; i < n;i++){
		if(Check(mask,i)) continue;
		for(int j = 0; j < n;j++){
			if(Check(mask,j) or i == j)continue;
			// cout << "Hell yah\n";
			ret = min(ret, call(Set(mask,j))+cost[j][i]);
		}
	}
	return ret;
}

int main()
{
	memset(dp,-1,sizeof dp);
	cin >> n >> k;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n ;j++){
			cin >> cost[i][j];
		}
	}
	int ans = call(0);
	cout << ans << endl;

	return 0;
}

• Subtask 1: 100 / 100