#include <iostream>
#include <string>
#include <sstream>
#include <map>
#include <iomanip>
#include <stack>
#include <cctype>

using namespace std;

map<char, double> variables;

double evaluateExpression(string expr);

void readCommand() {
    string line;
    getline(cin, line);  // Read the next line of integers
    stringstream ss(line);
    char var;
    double value;
    int i = 0;
    for (const auto& pair : variables) {
        ss >> value;
        variables[pair.first] = value;
        i++;
    }
}

void assignCommand(string line) {
    char var = line[0];
    string expr = line.substr(2);
    double value = evaluateExpression(expr);
    variables[var] = value;
}

void printCommand(string line) {
    stringstream ss(line);
    char var;
    bool first = true;
    while (ss >> var) {
        if (!first) cout << " ";
        cout << fixed << setprecisio...