#include <iostream>
#include <string>
using namespace std;
void analyzeAlanine(const string& protein) {
    int alanineCount = 0;
    int totalLength = protein.length();

    for (int i = 0; i < totalLength; i++) {
        if (protein[i] == 'A') {
            alanineCount++;
        }
    }

    double alaninePercentage = (static_cast<double>(alanineCount) / totalLength) * 100.0;

    cout << "Общая длина белка: " << totalLength << " аминокислот" << endl;
    cout << "Количество остатков аланина (A): " << alanineCount << endl;
    cout << "Доля аланина в последовательности: " << alaninePercentage << "%" << endl;
}

int main() {
    string protein = "MVHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDNLKGTFATLSELHCDKLHVDPENFRLLGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAHKYH";

    analyzeAlanine(protein);

    return 0;
}