这题能普及+？

#include <bits/stdc++.h>
using namespace std;

string a, b;

int main(){
	
	getline(cin, a);
	getline(cin, b);
	b += ' ';
	int lena = a.size();
	int lenb = b.size();
	for (int i = 0;i < lena;i++){
		if (a[i] >= 'A' && a[i] <= 'Z'){
			a[i] = a[i] - 'A' + 'a';
		}
	}
	for (int i = 0;i < lenb;i++){
		if (b[i] >= 'A' && b[i] <= 'Z'){
			b[i] = b[i] - 'A' + 'a';
		}
	}
	// cout << "a, b:" << a << " " << b << endl;
	
	string s2 = "";
	int cnt = 0, first = 0, letters = -1;
	bool flag = 0;
	for (int i = 0;i < lenb;i++){
		if (b[i] != ' '){
			s2 += b[i];
		} else {
			// cout << "s2:" << s2 << endl;
			letters++;
			if (s2 == a){
				cnt++;
				flag = 1;
				if (cnt == 1){
					first = i - lena;
				}
			}
			s2 = "";
		}
	}
	if (flag != 0){
		cout << cnt << " " << first;
	} else {
		cout << -1;
	}
	
	return 0;
}
// 这是我刚学c++3个月写的代码（很久之前的被现在的我找出来了）