제출 #521069

#제출 시각아이디문제언어결과실행 시간메모리
521069lucriDEL13 (info1cup18_del13)C++17
30 / 100
22 ms1700 KiB
#include <iostream> #include <fstream> using namespace std; int t,n,f[200010],q,ans[200010]; struct blocuri{int poz,nrs,fmax;}a[200010]; //ofstream out("fisier.txt"); int main() { cin>>t; while(t--) { ans[0]=0; cin>>n>>q; for(int i=2;i<=q+1;++i) cin>>f[i]; f[q+2]=n+1; a[q+2].fmax=0; a[q+2].poz=0; a[q+2].nrs=0; a[0].fmax=0; a[0].poz=0; a[0].nrs=0; a[q+1].fmax=0; a[q+1].poz=0; a[q+1].nrs=0; a[1].fmax=0; a[1].poz=0; a[1].nrs=0; f[1]=0; ++q; for(int i=1;i<=q;++i) { a[i].poz=(f[i]+f[i+1])/2; if(f[i+1]-f[i]<=3) { a[i].nrs=0; a[i].fmax=f[i+1]-f[i]-1; } else { a[i].nrs=(f[i+1]-f[i]-4)/2; if((f[i+1]-f[i])%2==0) a[i].fmax=3; else a[i].fmax=4; } for(int j=1;j<=a[i].nrs;++j) ans[++ans[0]]=a[i].poz; } for(int i=1;i<=q;++i) { if(a[i-1].fmax==0&&a[i].fmax!=0&&a[i+1].fmax==0) ans[0]=-1; else if(a[i-1].fmax==0&&a[i].fmax!=0) { if(a[i].fmax>2) { a[i].fmax-=2; ans[++ans[0]]=a[i].poz; } } else if(a[i].fmax!=0) { a[i].fmax-=a[i-1].fmax; if(a[i].fmax<0) ans[0]=-1; else if(a[i+1].fmax==0) { if(a[i].fmax==2&&a[i-1].fmax!=0) { a[i].fmax-=2; ans[++ans[0]]=a[i].poz; } else if(a[i].fmax!=0) ans[0]=-1; } if(ans[0]>=0&&a[i].fmax>2) { ans[++ans[0]]=a[i].poz; a[i].fmax-=2; } if(a[i+1].fmax==1) { if(a[i].fmax==2) { if(a[i-1].fmax!=0) { a[i].fmax-=2; ans[++ans[0]]=a[i].poz; } else ans[0]=-1; } } if(ans[0]>=0) for(int j=0;j<a[i-1].fmax;++j) ans[++ans[0]]=f[i]; } if(ans[0]<0) break; } cout<<ans[0]<<'\n'; //out<<ans[0]<<'\n'; for(int i=1;i<=ans[0];++i) cout<<ans[i]<<' '; if(ans[0]>0) cout<<'\n'; } return 0; }
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