#include <iostream>
#include <fstream>
#include <string>

using namespace std;


int v_stoi(string arg, int def) {
    try {
        return stoi(arg);
    } catch (...) {
        return def;
    }
}



int main(int, char**) {

    string line;
    ifstream infile("/sys/class/thermal/thermal_zone0/temp");
    if (infile.is_open()) {
        while (getline(infile, line)) {
            //cout << line << endl;
            break;
        }
        infile.close();
    }

    int value = v_stoi(line, 0);
    cout << value / 1000 << endl;

}