#include typedef unsigned int word; static word seed[] = { 0 }, result[256], result_count = 0, mm[256], aa = 0, bb = 0, cc = 0, i, x, y, j, w; static char data[] = "E3yua`:z+-Xg`Mv$", *r; static word Isaac(void) { if( result_count-- == 0 ) { cc++; bb += cc; for(i = 0; i < 256; i++) { x = mm[i]; aa ^= (i & 1) ? aa >> ((i & 2) ? 16 : 6) : aa << ((i & 2) ? 2 : 13); aa += mm[(i + 128) & 255]; mm[i] = y = mm[(x >> 2) & 255] + aa + bb; result[i] = bb = mm[(y >> 10) & 255] + x; } result_count = 255; } return result[result_count]; } static void Decode(void) { j = w = 0; for(r = data; *r > '%';) { for(i = 0; i < 5; i++) { w = w * 85 + (83 + *r) % 89; r++; } w ^= Isaac(); for(i = 0; i < 4; i++) { data[j] = w & 0xff; w >>= 8; ++j; } } j -= *r % 5; } int main(void) { for(j = 0; j < 256; j++) mm[j] = 0; for(j = 0; j < sizeof(seed) / 4; j++) mm[j & 255] ^= seed[j]; for(j = 0; j < (1 << 24); j++) Isaac(); Decode(); fwrite(data, j, 1, stdout); return 0; }