Problem	penguingathering
User	My12thCodebreakerAccount
Submission Time	2026-06-30 09:08:16
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

penguingathering.cpp: In function ‘int main()’:
penguingathering.cpp:16:15: error: expected initializer before ‘+=’ token
16 | int d += arr[i] - sum;
| ^~
penguingathering.cpp:17:10: error: ‘d’ was not declared in this scope
17 | ans += d * d;
| ^