Greater Integers

input/code.cpp: In function 'void solve()':
input/code.cpp:44:2: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if(f==9){
  ^~

#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define st first
#define nd second
#define pii pair<int,int>
#define N 2000005
#define INF 1e9+5
#define sp " "
#define nl "\n"
#define all(x) x.begin(),x.end()
#define fastio() ios_base::sync_with_stdio(0);cin.tie(0);
#define fori(i,l,r) for(int i=l;i<=r;i++)
#define forf(i,r) fori(i,1,r)
#define rof(i,r,l) for(int i=r;i>=l;i--)
#define ll long long
#define int ll
using namespace std;

int binpow(int x,int y){
    int ans=1;
    for(;y>0;x*=x,y>>=1){
        if(y&1)
            ans*=x;
    }
    return ans;
}

void solve(){
	int n;
	cin >> n;
	int dig=0;
	int f;
	int tmp=n;
	int ans=0;
	bool flag=false;
	while(n){
		dig++;
		f=n%10;
		if(f!=9)
            flag=true;
		n/=10;
	}
	if(f==9){
        if(dig==1)
            cout << 11;
        else if(!flag){
            for(int i=0;i<=dig;i++){
                cout << 1;
            }
            cout << nl;
        }
        else{
            for(int i=0;i<dig;i++)
                cout << 9;
            cout << nl;
        }
	}
	else{
        for(int i=0;i<dig;i++){
            ans+=f*binpow(10,i);
        }
        if(ans>tmp)
            cout << ans << nl;
        else{
            for(int i=0;i<dig;i++){
                ans+=binpow(10,i);
            }
            cout << ans << nl;
        }
	}
}

int32_t main(){
	fastio()
	int t;
	cin >> t;
	while(t--){
		solve();
	}
}

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: ACCEPTED