Submission #153055

#	Time	Username	Problem	Language	Result	Execution time	Memory
153055		hdj79	Kronican (COCI16_kronican)	C++14	80 / 100	1328 ms	18856 KiB

kronican

#include<iostream>
#include<vector>
using namespace std;
int root(int x,int parent[]){
    if(x==parent[x]) return x;
    parent[x]=root(parent[x],parent);
    return parent[x];
}
void nadji(vector<vector<int> > *b,vector<int> *p,int k,int br,int n){
    if((*p).size()==n){(*b).push_back(*p);return;}
    if(br<k){
        (*p).push_back(1);
        nadji(b,p,k,br+1,n);
        (*p).pop_back();
    }
    (*p).push_back(0);
    nadji(b,p,k,br,n);
    (*p).pop_back();
}
int izracunaj(int a){
    if(a<=10) return a;
    return 20-a;
}
int main(){
    ios_base :: sync_with_stdio(false);
    cin.tie(NULL);
    int n,k;
    cin>>n>>k;
    int parent[n];
    int graf [n][n];
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            cin>>graf[i][j];
        }
        parent[i]=i;
    }
    int skupine=n;
    long long best=999999999;
    long long sol=0;
    vector<vector<int> > bitmaske;
    vector<int> priv;
    nadji(&bitmaske,&priv,izracunaj(k),0,n);
    for(int br=0;br<bitmaske.size()-1;br++){
        skupine=n;
        for(int i=0;i<n;i++) parent[i]=i;
        while(skupine>k){
        int myn=999999999;
        int indx1=0;
        int indx2=0;
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                if(i==j) continue;
                if(root(i,parent)!=root(j,parent)){
                  if(graf[i][j]<myn && parent[i]==i && ((bitmaske[br][parent[j]]==1 && k<=10) || (bitmaske[br][parent[j]]==0 && k>10))){
                    myn=graf[i][j];
                    indx1=i;
                    indx2=j;
                  }
                }
            }
        }
        if(myn==999999999) { sol=myn;break;}
        parent[indx1]=parent[indx2];
        sol+=myn;
        skupine--;
        //cout<<myn<<endl;
        }
        if(sol<best) best=sol;
        //cout<<sol<<endl;
        sol=0;
    }
    cout<<best;
}

Compilation message (stderr)

kronican.cpp: In function 'void nadji(std::vector<std::vector<int> >*, std::vector<int>*, int, int, int)':
kronican.cpp:10:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if((*p).size()==n){(*b).push_back(*p);return;}
        ~~~~~~~~~~~^~~
kronican.cpp: In function 'int main()':
kronican.cpp:43:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int br=0;br<bitmaske.size()-1;br++){
                  ~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 80 / 100