#include<bits/stdc++.h>
#define ll long long
const ll mod=998244353;
int qp(ll x,int y){
	ll res=1;
	while(y){
		if(y&1){
			res=res*x%mod;
		}
		x=x*x%mod;
		y>>=1;
	}
	return res;
}
void init(int p){
	
}
int inv(int x){
 	return qp(i,mod-2);
}

implementer.cpp: In function ‘int main()’:
implementer.cpp:22:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   22 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
answer.code: In function ‘int inv(int)’:
answer.code:19:19: error: ‘i’ was not declared in this scope
   19 |         return qp(i,mod-2);
      |                   ^