#include <iostream>
int main()
{
int d;
int m;
int y;
std::cin >> d; // read the day
if ( std::cin.get() != '/' ) // make sure there is a slash between DD and MM
{
std::cerr << "expected /\n";
return 1;
}
std::cin >> m; // read the month
if ( std::cin.get() != '/' ) // make sure there is a slash between MM and YYYY
{
std::cerr << "expected /\n";
return 1;
}
std::cin >> y; // read the year
std::cout << "input date: " << d << "/" << m << "/" << y << "\n";
}
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