#include using namespace std; ifstream fin("castel.in"); ofstream fout("castel.out"); int C,N,H,x,maxi,Ha,y,k; long long suma=0; int main() { fin>>C>>N; H=0; while(H*(H+1)/2<=N) H++; H=H-1; if(C==1) { for(int i=1; i<=N; i++) { fin>>x; if(x>=1&& x<=9) k++; } fout<>x; fout<>x; for(int j=2; j<=H; j++) { fin>>y; suma=suma+x+y; x=y; } H--; } fout<