题解

#include <bits/stdc++.h>
using namespace() {
string word, text;
getline(cin, word);
getline(cin, text);

// 转换目标单词为小写
transform(word.begin(), word.end(), word.begin(), ::tolower);

int count = 0_pos = -1;

int n = text.length();
for (int i = 0; i < n;) {
    // 跳过空格
    while (i < n && text[i] == ' ')
        ++i;

    if (i >= n)
        break;

    int start = i;

    // 找到单词结尾
    while (i < n && text[i] != ' ')
        ++i;

    int end = i;
    string current = text.substr(start, end - start);

    // 转换为小写进行比较
    string lower_current = current;
    transform(lower_current.begin(), lower_current.end(), lower_current.begin(), ::tolower);

    if (lower_current == word) {
        // 判断前后是否为单词边界
        bool left = (start == 0 || !isalpha(text[start - 1]));
        bool right = (end == n || !isalpha(text[end]));

        if (left && right) {
            if (count == 0)
                first_pos = start;
            count++;
        }
    }
}

if (count > 0)
    cout << count << " " << first_pos << endl;
else
    cout << -1 << endl;

return 0;

}