#include <iostream>
#include <map>

int value(char r) {
    if (r == 'I')
        return 1;
    if (r == 'V')
        return 5;
    if (r == 'X')
        return 10;
    if (r == 'L')
        return 50;
    if (r == 'C')
        return 100;
    if (r == 'D')
        return 500;
    if (r == 'M')
        return 1000;
    return -1;
}

int romanToInt(std::string &str) {
    int res = 0;
    for (int i = 0; i < str.length(); i++) {
        int s1 = value(str[i]);
        if (i + 1 < str.length()) {
            int s2 = value(str[i + 1]);
            if (s1 >= s2) {
                res = res + s1;
            } else {
                res = res + s2 - s1;
                i++;
            }
        } else {
            res = res + s1;
            i++;
        }
    }
    return res;
}

int main() {
    std::string romanNumeral;
    std::cout << "Hello Codeauri Family,enter a Roman numeral here to find out the equivalent integer: ";
    std::cin >> romanNumeral;
    int integer = romanToInt(romanNumeral);
    std::cout << "Okay,the equivalent integer is: " << integer << std::endl;
    return 0;
}