paca?
Beginner Hint
- XOR has the property that XOR-ing the same value twice cancels out. For example, if A xor B = C, then C xor A = B.
- Using information you already know, can you determine the key?
Rows:
| CHALLENGE | AUTHORS | SOLVES (CURRENT) | SOLVE RATE (AT CONTEST TIME) |
|---|---|---|---|
1765 solves | - | ||
1575 solves | - | ||
937 solves | - | ||
630 solves | Top 28% = 84/300 users | ||
625 solves | - | ||
607 solves | - | ||
543 solves | Top 73% = 683/928 teams | ||
411 solves | - | ||
409 solves | - | ||
376 solves | - | ||
368 solves | - | ||
363 solves | Top 32% = 56/174 users | ||
350 solves | - | ||
342 solves | - | ||
339 solves | - | ||
332 solves | - | ||
332 solves | - | ||
324 solves | - | ||
318 solves | - | ||
307 solves | - |
Rows:
Daily AlpacaHackTopic: XORReleased: Mar 11, 2026