#include <iostream>
#include <ctime>
using namespace std;
int main()
{
    int ns,nn,tuoi; // ns: nam sinh; nn: nam nay
    cout << "Nhap vao nam sinh: ";
    cin >> ns;
    time_t hientai=time(0); //lay thoi gian tu he thong
    tm*ltm=localtime(&hientai);
    nn=1900 + ltm -> tm_year; //chi lay nam tu he thong
    cout << "Nam hien tai: " << nn << endl;
    tuoi=nn-ns;
    cout << "Tuoi hien tai: " << tuoi;
    return 0;
}