Submission #805684

#TimeUsernameProblemLanguageResultExecution timeMemory
805684AugustynSet (COCI21_set)C++17
40 / 110
1080 ms10976 KiB
#include<iostream> #include<vector> #include<algorithm> using namespace std; int n,k,akt; long long odp; int istnieje[531441]; int trzecia(vector<int>p,vector<int>d) { int ret=0; for(int i=0;i<p.size();++i) { if(p[i]==d[i]) ret=ret*3+p[i]-1; else ret=ret*3+(p[i]^d[i])-1; } return ret; } int gle; bool comp(vector<int>&a,vector<int>&b) { for(int i=gle;i<k;++i) if(a[i]<b[i]) return 1; else if(a[i]>b[i]) return 0; return 0; } int trojdoint(vector<int>&a) { int ret=0; for(int i=0;i<a.size();++i) ret=ret*3+a[i]-1; return ret; } vector<int>intdotroj(int a,int jdl) { vector<int>ret; while(jdl) { ret.push_back((a%3)+1); a/=3; --jdl; } reverse(ret.begin(),ret.end()); return ret; } long long pot3[20]; void wejdz(int pocz,int kon,vector<int>&wek) { if(kon-pocz+1<3) return; int najlep=gle; long long op_naj=__LONG_LONG_MAX__; long long ile[3]; for(int i=gle;i<k;++i) { ile[0]=ile[1]=ile[2]=0; for(int j=pocz;j<=kon;++j) { ++ile[(wek[j]/pot3[k-i-1])%3]; } sort(ile,ile+3); long long op=min(ile[0]*ile[1],(pot3[k-gle-1]-ile[2])*ile[0]); if(op<op_naj) { op_naj=op; najlep=i; } } ile[0]=ile[1]=ile[2]=0; vector<int>dol[3]; int napozgle,napoznajlep; for(int i=pocz;i<=kon;++i) { napozgle=(wek[i]/pot3[k-gle-1])%3; napoznajlep=(wek[i]/pot3[k-najlep-1])%3; wek[i]=wek[i]+(napozgle-napoznajlep)*(pot3[k-najlep-1]-pot3[k-gle-1]); ++ile[napoznajlep]; } sort(wek.begin()+pocz,wek.begin()+kon+1); for(int i=pocz;i<=kon;++i) { dol[(wek[i]/pot3[k-gle-1])%3].push_back(wek[i]%pot3[k-gle]); } //tutaj licze odp dla tego gowna int org_ile[3]; for(int i=0;i<3;++i) org_ile[i]=ile[i]; int zjd[3]; for(int i=0;i<3;++i) zjd[i]=i; if(ile[0]>ile[1]) swap(zjd[0],zjd[1]); if(ile[1]>ile[2]) swap(zjd[1],zjd[2]); if(ile[0]>ile[1]) swap(zjd[0],zjd[1]); ++akt; //cout<<gle<<" "<<ile[0]<<" "<<ile[1]<<" "<<ile[2]<<" "<<pot3[k-gle-1]-ile[2]<<endl; if(ile[zjd[1]]<pot3[k-gle-1]-ile[zjd[2]]) { for(auto i:dol[zjd[2]]) istnieje[i]=akt; for(auto i:dol[zjd[0]]) for(auto j:dol[zjd[1]]) if(istnieje[trzecia(intdotroj(i,k),intdotroj(j,k))]==akt) ++odp; } else { //wszystkie z ile[0]xbrakujace z ile[2] for(auto i:dol[zjd[1]]) { istnieje[i]=akt; } odp+=ile[zjd[0]]*ile[zjd[1]]; if(!dol[zjd[2]].empty()) { int najm=zjd[2]*pot3[k-gle-1]; int najw=zjd[2]; for(int i=1;i<k-gle;++i) najw=najw*3+2; int it_dol=0; for(int i=najm;i<=najw;++i) { if(it_dol<dol[zjd[2]].size()) { if(dol[zjd[2]][it_dol]==i) { ++it_dol; continue; } } vector<int>wtf=intdotroj(i,k-gle); for(auto j:dol[zjd[0]]) { if(istnieje[trzecia(intdotroj(j,k-gle),wtf)]==akt) --odp; } } } } ++gle; wejdz(pocz,pocz+org_ile[0]-1,wek); wejdz(pocz+org_ile[0],pocz+org_ile[0]+org_ile[1]-1,wek); wejdz(pocz+org_ile[0]+org_ile[1],kon,wek); --gle; } int main() { ios_base::sync_with_stdio(0); cin>>n>>k; pot3[0]=1; for(int i=1;i<=k;++i) pot3[i]=pot3[i-1]*3; vector<int>wek(n); char wcz; int doktej=1; for(int i=1;i<=k;++i) doktej*=3; for(int i=0;i<n;++i) { int wtroj=0; for(int j=0;j<k;++j) { cin>>wcz; wek[i]=wek[i]*3+wcz-'1'; } } wejdz(0,n-1,wek); cout<<odp; }

Compilation message (stderr)

Main.cpp: In function 'int trzecia(std::vector<int>, std::vector<int>)':
Main.cpp:12:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for(int i=0;i<p.size();++i)
      |                 ~^~~~~~~~~
Main.cpp: In function 'int trojdoint(std::vector<int>&)':
Main.cpp:34:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for(int i=0;i<a.size();++i)
      |                 ~^~~~~~~~~
Main.cpp: In function 'void wejdz(int, int, std::vector<int>&)':
Main.cpp:129:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  129 |                 if(it_dol<dol[zjd[2]].size())
      |                    ~~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp: In function 'int main()':
Main.cpp:166:13: warning: unused variable 'wtroj' [-Wunused-variable]
  166 |         int wtroj=0;
      |             ^~~~~
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