Problem:
Score : 200 points

Problem Statement

Given are 1-digit positive integers a and b. Consider these two strings: the concatenation of b copies of the digit a, and the concatenation of a copies of the digit b. Which of these is lexicographically smaller?

Constraints

1 \leq a \leq 9

1 \leq b \leq 9

a and b are integers.

Input

Input is given from Standard Input in the following format:

a b

Output

Print the lexicographically smaller of the two strings. (If the two strings are equal, print one of them.)

Sample Input 1

4 3

Sample Output 1

3333

We have two strings 444 and 3333. Between them, 3333 is the lexicographically smaller.

Sample Input 2

7 7

Sample Output 2

7777777

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
template <class T>
using vc = vector<T>;
template <class T>
using vvc = vector<vector<T>>;
using vl = vector<ll>;

const ll MOD = 1e9 + 7;
const ll INF = 1e14;
const ld EPS = 1e-11;

#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define rep(i, n) for (int i = 0; i < (n); i++)
#define repr(i, n) for (int i = (n)-1; i >= 0; i--)
#define repe(i, l, r) for (int i = (l); i < (r); i++)
#define reper(i, l, r) for (int i = (r)-1; i >= (l); i--)

void init() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(15);
}
//--------------------------------------------------------------------------------//

int main() {
    init();
    ll a, b;
    cin >> a >> b;
    string s = "", t = "";
    rep(i, a) s += to_string(b);
    rep(i, b) t += to_string(a);
    if (s < t)
        cout << s << endl;
    else
        cout << t << endl;
    return 0;
}