# include<iostream> # include<cstdio> using namespace std; int main(){ int num=0,hu=0,zuo=0,a[31]={0}; while (hu<15){ zuo++; if(zuo==31) zuo=1; if(a[zuo]==0) num++; if(num==9){ hu++; num=0; a[zuo]=1; } } for(int i=1;i<=30;i++) { if(a[i]==0) cout<<i <<" "; } return 0; }