//prof.Carmen Minca #include using namespace std; int main() { long long nt,p10=1,k=0,M,i,T=0, P,N,x; ifstream f("culegere.in"); ofstream g("culegere.out"); f>>P>>N; nt=P*(P+1)/2; x=nt; while(x) { k++; x/=10; } for(i=1;i