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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int n,m;
  5. void init(){
  6. cout<<"Nhap 1 so nguyen n:";
  7. cin>>n;
  8. m=sqrt(n);
  9. }
  10. void solve(){
  11. if(m*m==n)
  12. cout<<"Yes";
  13. else
  14. cout<<"No";
  15. }
  16.  
  17. int main() {
  18. init();
  19. solve();
  20. return 0;
  21. }
  22.  
Success #stdin #stdout 0s 5312KB
stdin
5
stdout
Nhap 1 so nguyen n:No