蓝桥杯备赛1.统计单词数

题目链接：P1308 [NOIP2011 普及组] 统计单词数 - 洛谷 | 计算机科学教育新生态 (luogu.com.cn)

#include<bits/stdc++.h>
#define int long long 
#define endl '\n'
const int N = 1e5+10;
using namespace std;
int a[N];
signed main()
{
    std::ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
    int sum = 0;
    string s1,s2;
	getline(cin,s1);
    getline(cin,s2);
    for(int i=0;i<s1.size();i++)
    {
    	s1[i]=tolower(s1[i]);
	}
	for(int i=0;i<s2.size();i++)
	{
		s2[i]=tolower(s2[i]);
	}
	s1 = ' '+s1+' ';
	s2 = ' '+s2+' ';
    int pos = s2.find(s1);
    if(pos==string::npos)
    {
    	cout<<-1<<endl;
	}
	else
	{
		int st = pos;
		while(st!=-1)
		{
			sum++;
			st = s2.find(s1,st+1);
		}
		cout<<sum<<' '<<pos<<endl;
	}

    
    return 0;
}