#include <bits/stdc++.h>
using namespace std;
int main() {
long long m, n;
cin >> m >> n;
int x, y;
int a[n];
for (int i = 0; i < n; i++) {
cin >> a[i];
}
cin >> x >> y;
cout << x << y;
for (int i=1; i<=x<=y;i++){
return 0;
cout << m << n;
for (int i=1; i<=m<=n; i++){
return 0;
}
}
}
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