#include<cstdio>
#include<windows.h>
#define blue FOREGROUND_BLUE
#define green FOREGROUND_GREEN
#define red FOREGROUND_RED
using namespace std;
int mod=1;
void out()
{
	for(int i=1;i<=10000;i++)
	{
		if(mod==1) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | blue);
		else if(mod==2) SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | green);
		else SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY | red);
		printf("%c",char(rand()%64+63));
		mod=rand()%3;

	}
}
int main()
{
	while(1) out();
}