A900 审查 全站最快题解

#include <iostream>
#include <string>
#include <vector>

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(NULL);

    std::string source_str;
    std::string pattern_str;

    std::cin >> source_str >> pattern_str;

    std::string result = "";
    int t_len = pattern_str.length();

    for (char c : source_str) {
        result.push_back(c);
        if (result.length() >= t_len) {
            if (result.compare(result.length() - t_len, t_len, pattern_str) == 0) {
                result.resize(result.length() - t_len);
            }
        }
    }

    std::cout << result << '\n';

    return 0;
}