#include <stdio.h>
int main(void)
{
int C;
if(C == ' ' || C == '\t')
{
while (C == ' ' || C == '\t')
if(C != ' ')
{
}
}
else
{
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CgppbnQgbWFpbih2b2lkKSAKewoJaW50IEM7Cgl3aGlsZSgoQyA9IGdldGNoYXIoKSkgIT0gLTEpCglpZihDID09ICcgJyB8fCBDID09ICdcdCcpCgl7CgkJQyA9IGdldGNoYXIoKTsKCQl3aGlsZSAoQyA9PSAnICcgfHwgQyA9PSAnXHQnKQoJCUMgPSBnZXRjaGFyKCk7CgkJaWYoQyAhPSAnICcpCgkJewoJCSAgICBwcmludGYoIlxuIik7CgkJICAgIHB1dGNoYXIoQyk7CgkJfQoJfQoJZWxzZSAKCXsKCSAgIHB1dGNoYXIoQyk7Cgl9CglyZXR1cm4gMDsKfQo=