Submission #883683

#	Time	Username	Problem	Language	Result	Execution time	Memory
883683		vjudge1	Kronican (COCI16_kronican)	C++17	100 / 100	722 ms	8656 KiB

kronican

#include <bits/stdc++.h>
using namespace std;
#define sp << " " << 
#define int long long
#define vi vector<int>
#define F(xxx,yyy) for (int xxx=1;xxx<=yyy;xxx++)
#define pii pair<int,int>

void solve() {
  int n,k;
  cin >> n >> k;
  int a[n+1][n+1];
  F(i,n) {
    F(j,n) cin >> a[i][j];
  }
  for (int i=1;i<=n;i++) {
    for (int j=1;j<=n;j++) {
      for (int m=1;m<=n;m++) {
        a[i][j] = min(a[i][j],a[i][m]+a[m][j]);
      }
    }
  }
  int lim = (1<<n);
  vi dp(lim,2e18);
  for (int mask = 0;mask<lim;mask++) {
    int pc = __builtin_popcountll(mask);
    if (pc == k) {
      dp[mask] = 0;
      continue;
    }
    if (pc < k) continue;
    for (int j=0;j<n;j++) {
      if (mask&(1<<j)) {
        for (int jj=0;jj<n;jj++) {
          if (jj==j) continue;
          if(!(mask&(1<<jj))) continue;
          dp[mask] = min(dp[mask],dp[mask^(1<<j)]+a[j+1][jj+1]);
        }
      }
    }
  }
  cout << dp[lim-1] << endl;
}
    
                  
                             
signed main() { 
  ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  #ifdef Local
  freopen("in","r",stdin);
  freopen("out","w",stdout); 
  #endif
  int t = 1;
  //cin >> t;
	F(i,t) solve();
}

• Subtask 1: 100 / 100