#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector<vector<float>> yy
{
{20.0, 20.0},
{80.0, 80.0},
{20.0, 80.0},
{80.0, 20.0}
};
for (int i=0; i<yy.size(); i++)
{
for (int j=0; j<yy[i].size(); j++)
{
cout << yy[i][j] << " ";
}
cout << endl;
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8dmVjdG9yPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSAKewoKCXZlY3Rvcjx2ZWN0b3I8ZmxvYXQ+PiB5eQoJewoJCXsyMC4wLCAyMC4wfSwKCQl7ODAuMCwgODAuMH0sCgkJezIwLjAsIDgwLjB9LAoJCXs4MC4wLCAyMC4wfQoJfTsKCglmb3IgKGludCBpPTA7IGk8eXkuc2l6ZSgpOyBpKyspCgl7CgkJZm9yIChpbnQgaj0wOyBqPHl5W2ldLnNpemUoKTsgaisrKQoJCXsKCQkJY291dCA8PCB5eVtpXVtqXSA8PCAiICI7CgkJfQoJCWNvdXQgPDwgZW5kbDsKCX0KCglyZXR1cm4gMDsKfQ==