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Feb 21st, 2019
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C++ 0.31 KB | None | 0 0
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int n, m, mn = 0x3f3f3f3f;
  5. vector<int> v;
  6.  
  7. int main(){
  8.     cin >> n >> m;
  9.     v.resize(m);
  10.     for(int i = 0; i < m; i++) cin >> v[i];
  11.     sort(v.begin(), v.end());
  12.     for(int i = 0; i + n <= m; i++) mn = min(mn, v[n+i-1] - v[i]);
  13.     cout << mn << endl;
  14. }
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