<wib_jonas> slashlearn ponderthis//Ponder This are monthly open-ended programming puzzle challenges that some regulars enjoy: https://research.ibm.com/haifa/ponderthis/index.shtml

#include <stdio.h>
int main(){printf("\e[1m");int a,c=0;b:a=getchar();if(a==EOF)return 0;if(!(a&128)||(a&64))printf("\e[%dm","\37! $\"#"[c]),c=c+1-6*(c>4);putchar(a);goto b;}