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#include <iostream>
#include <string>

using namespace std;

int main() {
    string input;
    cout << "Enter a string: ";
    getline(cin, input);
    bool match1 = true;
    for (char c : input) {
        if (c != 'a' && c != 'b' && c != 'c') {
            match1 = false;
            break;
        }
    }
    if (match1) {
        cout << "String \"" << input << "\" matches the regular expression a+b+c*" << endl;
    } else {
        cout << "String \"" << input << "\" does not match the regular expression a+b+c*" << endl;
    }
    bool match2 = true;
    for (int i = 0; i < input.length(); i++) {
        if (input[i] == 'a' && (i == input.length() - 1 || input[i+1] != 'b')) {
            match2 = false;
            break;
        }
    }
    if (match2) {
        cout << "String \"" << input << "\" matches the regular expression ab*" << endl;
    } else {
        cout << "String \"" << input << "\" does not match the regular expression ab*" << endl;
    }
    return 0;
}