#include<iostream>
#include<bits/stdc++.h>
using namespace std;
int main()
{
// Dùng cho cách 1
string m = "abcdefghijklmnopqrstuvwxyz ";
int a[225]; // int
int n, i;
cin >> n;
for(i=0;i<n;i++)
{
cin >> a[i];
}
for(i=0;i<n;i++)
{
// Cách 1
cout << m[a[i]-1];
// Cách 2
//cout << (char)(a[i] != 27 ? a[i] + 96 : ' ');
}
return 0;
}
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