#include <iostream>
using namespace std;
int main() {
int n = 4;
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n - i; j++) {
cout << " ";
}
for (int j = 1; j <= 2 * i - 1; j++) {
cout << "o ";
}
cout << endl;
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CiAgICBpbnQgbiA9IDQ7CgogICAgZm9yIChpbnQgaSA9IDE7IGkgPD0gbjsgaSsrKSB7CgogICAgICAgIAogICAgICAgIGZvciAoaW50IGogPSAxOyBqIDw9IG4gLSBpOyBqKyspIHsKICAgICAgICAgICAgY291dCA8PCAiICAiOwogICAgICAgIH0KCiAgICAgICAKICAgICAgICBmb3IgKGludCBqID0gMTsgaiA8PSAyICogaSAtIDE7IGorKykgewogICAgICAgICAgICBjb3V0IDw8ICJvICI7CiAgICAgICAgfQoKICAgICAgICBjb3V0IDw8IGVuZGw7CiAgICB9CgogICAgcmV0dXJuIDA7Cn0=