C++ 2675 문자열 반복

#include <iostream>
#include <string>

using namespace std;

int main() {

	int t;
	cin >> t;



	while (t--) {
		int r;
		cin >> r;
		string s;
		cin >> s;

		for (int i = 0; i < s.size(); i++) {
			for (int j = 0; j < r; j++) {
				cout << s[i];
			}
			
		}
		cout << '\n';
	}
}