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  Kien  commented on Sept. 6, 2021, 10:12 a.m.

  include<stdio.h>

  include<iostream>

  include<math.h>

  using namespace std;

  int main(){

  int x,a;
      cin>> a;
  
      x = sqrt(a);
  
      cout << x;
  return 0;

  }

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  NguyenDongThinh_CNTT4_K61  commented on Aug. 26, 2021, 2:39 a.m. ← edited →

  #include<bits/stdc++.h>
  using namespace std;
  int main()
  {
      long long a;
      cin>>a;
      cout<<(int)sqrt(a);
  }