我这个代码怎么改

#include <bits/stdc++.h>
using namespace std;
int t;
int main () {
	cin >> t;
	while (t--) {
		int n, m, cnt = 0;
		cin >> n >> m;
		string s, s2;
		cin >> s >> s2;
		//统一大小写 
		for (int i = 0; i < s.size(); i++) {
			if (s[i] >= 'A' && s[i] <= 'Z') {
				s[i] += 32;
			}
		}
		for (int i = 0; i < s2.size(); i++) {
			if (s2[i] >= 'A' && s2[i] <= 'Z') {
				s2[i] += 32;
			}
		}
		while (true) {
			if (s2.find (s) == string :: npos) {
				break;
			}
			++cnt;
			//删除掉已经算过的 
			s2.erase(s2.find (s), s2.find (s) + s.size());
			cout << s2 << ' '; 
		} 
		cout << cnt << endl;
	}
	return 0;
}