Problem	workload
User	LiuZq
Submission Time	2025-01-01 14:01:56
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

workload.cpp: In function ‘ll mod_inv(ll, ll)’:
workload.cpp:8:12: error: ‘extended_gcd’ was not declared in this scope
8 | ll g = extended_gcd(a, m, x, y);
| ^~~~~~~~~~~~
workload.cpp: In function ‘ll mod_comb(ll, ll)’:
workload.cpp:27:12: error: ‘fact’ was not declared in this scope
27 | return fact[n] * inv_fact[r] % MOD * inv_fact[n - r] % MOD;
| ^~~~
workload.cpp:27:22: error: ‘inv_fact’ was not declared in this scope
27 | return fact[n] * inv_fact[r] % MOD * inv_fact[n - r] % MOD;
| ^~~~~~~~