Language: C++

v#include<bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define pii pair<int,int>
#define pp pair<pair<ll, ll>,pair<ll, ll>>
#define pll pair<ll,ll>
#define ppll pair<ll,pll>
#define pdd pair<double,double>
#define vii vector<int>
#define vll vector<ll>
#define mat vector<vector<ll>>
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define eb emplace_back
#define fi first
#define sc second
#define rep(i,n) for(ll i=0;i<n;i++)
#define rep2(i,a,b) for(ll i=a;i<b;i++)
#define repr(i,n) for(ll i=n-1;i>=0;i--)
#define all(x) x.begin(),x.end()
#define sz(x) (ll) (x).size()
#define pq priority_queue<ll>
#define pqg priority_queue<ll,vector<ll>,greater<ll>>
#define LB(v,x) (lower_bound(v.begin(),v.end(),x)-v.begin())
#define UB(v,x) (upper_bound(v.begin(),v.end(),x)-v.begin())
#define ERASE(v) sort(v.begin(),v.end());v.erase(unique(v.begin(),v.end()),v.end())
#define int ll
// #define ll int
using namespace std;
const ll INF = (1 << 30 ) - 1;
const ll LLINF = (1LL << 60LL);
const ll MOD = 1000000007;
// const ll mod = 998244353;
const ll MAX = 2100000;
const double pi = acos(-1);
const double eps = 1e-10;
ll dx[8] ={1,0,-1,0,1,-1,1,-1};
ll dy[8] ={0,1,0,-1,1,-1,-1,1};
 
template<class T> 
inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> 
inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }






void solve() {
    ll n,k;
    cin>>n>>k;
    ll ans=n;
    rep(i,10000000){
        if(n>k)n=abs(n%k);
        else n=abs(n-k);
        chmin(ans,n);
    }
    cout<<ans<<endl;

}





signed main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(15);


    solve(); 


    return 0;
}


Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | v#include<bits/stdc++.h>
      |  ^
a.cc:1:1: error: 'v' does not name a type
    1 | v#include<bits/stdc++.h>
      | ^
a.cc:36:19: error: 'acos' was not declared in this scope
   36 | const double pi = acos(-1);
      |                   ^~~~
a.cc: In function 'void solve()':
a.cc:53:5: error: 'cin' was not declared in this scope
   53 |     cin>>n>>k;
      |     ^~~
a.cc:56:18: error: 'abs' was not declared in this scope; did you mean 'ans'?
   56 |         if(n>k)n=abs(n%k);
      |                  ^~~
      |                  ans
a.cc:57:16: error: 'abs' was not declared in this scope; did you mean 'ans'?
   57 |         else n=abs(n-k);
      |                ^~~
      |                ans
a.cc:60:5: error: 'cout' was not declared in this scope
   60 |     cout<<ans<<endl;
      |     ^~~~
a.cc:60:16: error: 'endl' was not declared in this scope
   60 |     cout<<ans<<endl;
      |                ^~~~
a.cc: In function 'int main()':
a.cc:69:5: error: 'cin' was not declared in this scope
   69 |     cin.tie(0);
      |     ^~~
a.cc:70:5: error: 'ios' has not been declared
   70 |     ios::sync_with_stdio(false);
      |     ^~~
a.cc:71:5: error: 'cout' was not declared in this scope
   71 |     cout << fixed << setprecision(15);
      |     ^~~~
a.cc:71:13: error: 'fixed' was not declared in this scope
   71 |     cout << fixed << setprecision(15);
      |             ^~~~~
a.cc:71:22: error: 'setprecision' was not declared in this scope
   71 |     cout << fixed << setprecision(15);
      |                      ^~~~~~~~~~~~