42 lines
726 B
C++
42 lines
726 B
C++
#include <iostream>
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using namespace std;
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string alph = "abcdefghijklmnopqrstuvwxyz";
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int main() {
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int t;
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cin >> t;
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int used_chars[26];
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for (int k = 0; k < t; k++) {
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int n;
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cin >> n;
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int* s = new int[n];
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for (int i = 0; i < n; i++) {
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cin >> s[i];
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}
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for (int i = 0; i < 26; i++) {
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used_chars[i] = 0;
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}
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for (int i = 0; i < n; i++) {
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for (int j = 0; j < 26; j++) {
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if (used_chars[j] == s[i]) {
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cout << alph[j];
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used_chars[j]++;
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break;
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}
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}
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}
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cout << endl;
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delete[] s;
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}
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}
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