#include<iostream> #include<cstdio> #include<cstring> int c[10]; using namespace std; int main(){ int a = 0,b; for(int i = 1;i<=1000;i++){ a = (a+i+1)%10; if(a == 0){ c[10] = 1; } c[a] = 1; } for(int i = 0;i<10;i++){ if(c[i] == 0){ cout<<i+1<<" "; } } return 0; }