2 solutions

  • 0
    @ 2024-10-19 16:22:09
    #include<bits/stdc++.h>
    using namespace std;
    int main()
    {
        int n;
        cin>>n;
        while(n--)
        {
            int x;
            cin>>x;
            int s=x;
            for(int i=2;i<=x/i;i++)
            {
                if(x%i==0)
                {
                    s=s/i*(i-1);
                    while(x%i==0)
                    {
                        x/=i;
                    }
                }
            }
            if(x>1)
            {
                s=s/x*(x-1);
            }
            cout<<s<<endl;
        }
        
        return 0;
    }
    
    
    
    • -1
      @ 2024-10-5 10:05:19
      #include<bits/stdc++.h>
      using namespace std;
      int main()
      {
          int n;
          cin>>n;
          while(n--)
          {
              int x;
              cin>>x;
              int s=x;
              for(int i=2;i<=x/i;i++)
              {
                  if(x%i==0)
                  {
                      s=s/i*(i-1);
                      while(x%i==0)
                      {
                          x/=i;
                      }
                  }
              }
              if(x>1)
              {
                  s=s/x*(x-1);
              }
              cout<<s<<endl;
          }
          
          return 0;
      }
      
      • 1

      Information

      ID
      185
      Time
      1000ms
      Memory
      256MiB
      Difficulty
      3
      Tags
      (None)
      # Submissions
      43
      Accepted
      13
      Uploaded By