A

#include <cstdio>
#include <vector>

int n, cnt[5], a;

using namespace std;

int main() {
    scanf("%d", &n);
    for(int i = 0; i < n; i++) {
        scanf("%d", &a);
        if (a == 0) {
            cnt[0] = 1;
            continue;
        }
        if (a == 100) {
            cnt[1] = 1;
            continue;
        }
        if (a % 10 == 0) {
            cnt[2] = a;
            continue;
        }
        if (a < 10) {
            cnt[3] = a;
            continue;
        }
        cnt[4] = a;
    }
    vector < int > ans;
    if (cnt[0]) ans.push_back(0);
    if (cnt[1]) ans.push_back(100);
    if (cnt[2]) ans.push_back(cnt[2]);
    if (cnt[3]) ans.push_back(cnt[3]);
    if (!cnt[2] && !cnt[3] && cnt[4]) ans.push_back(cnt[4]);
    printf("%d\n", ans.size());
    for(int i = 0; i < ans.size(); i++) {
        if (i) printf(" ");
        printf("%d", ans[i]);
    }
    puts("");
}