Submission #447316

#	Time	Username	Problem	Language	Result	Execution time	Memory
447316		KDisabledA	Kronican (COCI16_kronican)	C++14	0 / 100	11 ms	16796 KiB

kronican

#include<bits/stdc++.h>
#include<ext/numeric>
#define fastIO                  ios::sync_with_stdio(0), cin.tie(NULL), cout.tie(NULL);
#define FOR(i, j, k, in)		for (int i = (j); i < (k); i += (in))
#define FORW(i, j, k, in)		for (int i = (j); i <= (k); i += (in))
#define RFOR(i, j, k, in)		for (int i = (j); i >= (k); i -= (in))
#define RFORW(i, j, k, in)		for (int i = (j); i > (k); i -= (in))
#define sz(arr)                 ((int)(arr).size())
#define pb                      push_back
#define fi						first
#define se						second
#define mp						make_pair

using namespace std;
using namespace __gnu_cxx;

typedef pair<int,int> pii;
typedef vector<int> vi;
typedef pair<int,pii> piii;
typedef vector<pii> vii;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<ll> vll;
typedef pair<ll,ll> pll;
typedef vector<pll> vpll;

const int inf=INT_MAX-(13*7);
const float PI=acos(-1);
const ll linf=LLONG_MAX-(13ll*7ll);
const int N=22;
int n,k;
int a[N][N];
int dp[1<<N];
int f(int mask){
    if(__builtin_popcount(mask) == k) return 0;
    if(dp[mask]!=-1) return dp[mask];
    dp[mask]=1<<30;
    FOR(i,0,n,1){
        if(!(mask&(1<<i))) continue;
        FOR(j,0,n,1){
            if(i==j) continue;
            if(!(mask&(1<<j))) continue;
            dp[mask] = min(dp[mask],f(mask^(1<<i))+a[i][j]);
        }
    }
    return dp[mask];
}
int main(){
    #ifndef ONLINE_JUDGE
        freopen("dungdich.inp","r",stdin);
        freopen("dungdich.out","w",stdout);
    #endif // ONLINE_JUDGE
    fastIO;
    cin>>n>>k;
    memset(dp,-1,sizeof dp);
    FOR(i,0,n,1){
        FOR(j,0,n,1){
            cin>>a[i][j];
        }
    }
    cout<<f((1<<n)-1);
}

//-T nghi la t khong the de mat 1 nguoi ban tot nhu m dau =)))
//

Compilation message (stderr)

kronican.cpp: In function 'int main()':
kronican.cpp:50:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |         freopen("dungdich.inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
kronican.cpp:51:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   51 |         freopen("dungdich.out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 100