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