#include <stdio.h>
#include <string.h>
int main(void) {
char mark[11];
mark[3]='u';
mark[7]='i';
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNsdWRlIDxzdHJpbmcuaD4KCmludCBtYWluKHZvaWQpIHsKCWNoYXIgbWFya1sxMV07CiAgICBzdHJjcHkobWFyaywiaW5kYXN0cmVhbCIpOwogICAgbWFya1szXT0ndSc7CiAgICBtYXJrWzddPSdpJzsKICAgIHByaW50ZigiJXNcbiIsbWFyayk7CglyZXR1cm4gMDsKfQo=