Three Swimmers

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long int
#define ld long double
#define pb push_back
#define p_b pop_back
#define si stack<int>
#define sll stack<ll>
#define sc stack<char>
#define vi vector<int>
#define vll vector<ll>
#define mii map<int, int>
#define msi map<string, int>
#define mci map<char, int>
#define qc queue<char>
#define qi queue<int>
#define qll queue<ll>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
    cin >> t;
    while(t--){
        ull a, b, c, p;
        cin >> p >> a >> b >> c;
        ull arr[3];
        arr[0] = (p%a == 0) ? 0 : (p/a+1)*a-p;
        arr[1] = (p%b == 0) ? 0 : (p/b+1)*b-p;
        arr[2] = (p%c == 0) ? 0 : (p/c+1)*c-p;
        ull min = arr[0];
        for(int i = 1; i < 3; i++){
            if(min > arr[i]){
                min = arr[i];
            }
        }
        cout << min << "\n";
    }
    return 0;
}