Submission #229352

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <array>
#include <climits>
#include <cmath>
#include <iterator>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <string>
#include <tuple>
#include <vector>

typedef long long          ll;
typedef unsigned int       uint;
typedef unsigned long long ull;

using namespace std;

int main() {
  int a;
  int b;
  cin >> a >> b;
  std::cout << (b - a % b) % b << std::endl;
}

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