#include <iostream>
int main() {
char s[] = "It's easy to write program on C++";
const size_t step = 4;
for (size_t i = 0; i < sizeof(s); i += step)
{
std::cout.write( s+i, i+step > sizeof(s) ? sizeof(s)-i : step );
std::cout << std::endl;
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgoKaW50IG1haW4oKSB7CgoJY2hhciBzW10gPSAiSXQncyBlYXN5IHRvIHdyaXRlIHByb2dyYW0gb24gQysrIjsKCWNvbnN0IHNpemVfdCBzdGVwID0gNDsgCglmb3IgKHNpemVfdCBpID0gMDsgaSA8IHNpemVvZihzKTsgaSArPSBzdGVwKQoJewoJICAgIHN0ZDo6Y291dC53cml0ZSggcytpLCBpK3N0ZXAgPiBzaXplb2YocykgPyBzaXplb2YocyktaSA6IHN0ZXAgKTsKCSAgICBzdGQ6OmNvdXQgPDwgc3RkOjplbmRsOwoJfQoKCXJldHVybiAwOwp9