#include<stdio.h>
#define NONBLANK '-'
int main(void)
{
int c,lastc;
lastc=NONBLANK;
{
if(c==' ')
{
if(lastc!=' ')
}
else
lastc=c;
}
return 0;
}
I2luY2x1ZGU8c3RkaW8uaD4KI2RlZmluZSBOT05CTEFOSyAnLScKCmludCBtYWluKHZvaWQpCnsKICBpbnQgYyxsYXN0YzsKCiAgbGFzdGM9Tk9OQkxBTks7CgogIHdoaWxlKChjPWdldGNoYXIoKSkhPUVPRikKICB7CiAgICBpZihjPT0nICcpCiAgICB7CiAgICAgIGlmKGxhc3RjIT0nICcpCiAgICAgICAgcHV0Y2hhcihjKTsKICAgIH0KICAgIGVsc2UKICAgICAgcHV0Y2hhcihjKTsKCiAgICBsYXN0Yz1jOwogIH0KcmV0dXJuIDA7Cn0=