#include <iostream>
#include <cmath>
#include <algorithm>
#include <string>
#include <iomanip>
#include <vector>
using namespace std;
int main()
{
    int start, end, n;
    setlocale(LC_ALL, "rus");
    cout << "Исходное число: ";
    cin >> start;
    cout << "Конечное число: ";
    cin >> end;
    n = end - start + 1;
    vector <int> programms(n, 0);
    vector <int> slojenie;
    vector <int> umnojenie;
    string temp;
    getline(cin, temp);
    for (int i = 0; i < temp.size(); i++) {
        if (temp[i] == '*') {
            umnojenie.push_back(temp[i + 1]);
        }
        else if (temp[i] == '+') {
            slojenie.push_back(temp[i + 1]);
        }
    }
    cout << umnojenie[0] * 3;
}