#include <iostream>
using namespace std;

int main() {
    int tubes = 24;
    double weight = 0.152;
    char nucleotide = 'A';
    bool passed = true;
    
    cout << "tubes: " << tubes << endl;
    cout << "weight: " << weight << endl;
    cout << "nucleotide: " << nucleotide << endl;
    cout << "passed: " << passed << endl;
    
    return 0;
}