Submission #229360

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstdlib>
#include <sstream>
#include <cstring>
#include <string>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <numeric>
#include <functional>
#include <cmath>

#define rep2(x,from,to) for(int (x)=(from);(x)<(to);(x)++)
#define rep(x,to) rep2((x),0,(to))
#define all(c) (c).begin(),(c).end()
#define sz(v) (int)(v).size()

using namespace std;
typedef long long ll;
typedef pair<int,int> pii;


int main()
{
	int n, k;
	cin >> n >>k;
	
	
	cout << k-n%k << endl;
	return 0;
}

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