#include <stdio.h>
#include <string.h>

int
main(int argc, char *argv[])
{
	FILE *f;
	int i;
	char buf[128];

	if(argc < 3)
		return 1;

	f = fopen(argv[1], "r+b");
	if(f == NULL)
		return 1;

	strcpy(buf, "grandtheftauto3");
	strcat(buf, argv[2]);

	fseek(f, 100, SEEK_SET);
	for(i = 0; i < 128; i++){
		buf[i] += 23;
		fwrite(&buf[i], 1, 1, f);
		if(buf[i] == 23)
			break;
		fseek(f, 99, SEEK_CUR);
	}

	return 0;
}