Comments

• 
  

  -1

  

  NamKhanh187  commented on Feb. 14, 2025, 5:44 a.m.

  include <bits/stdc++.h>

  using namespace std; int arr[1001]; int main() { iosbase::syncwithstdio(false); cin.tie(NULL); unorderedmap<int, int> mp; int n; cin >> n; for (int i = 0; i < n; i++) { cin >> arr[i]; mp[arr[i]]++; } int x; cin >> x; int count = 0; for (int i = 0; i < n; i++) { count += mp[x - arr[i]]; if (arr[i] * 2 == x) count--; } cout << count / 2; return 0; }

• 
  

  -1

  

  phnam212  commented on Jan. 6, 2025, 9:43 a.m.

  include<bits/stdc++.h>

  using namespace std;

  int check(int a[], int n, int k){ int cnt=0; for(int i=0;i<n-1;i++){ for(int j=i+1;j<n;j++){ if(a[i]+a[j]==k){ cnt+=1; } } } return cnt; }

  int main(){ int n;cin>>n; int a[n]; for(int i=0;i<n;i++){ cin>>a[i]; } int k;cin>>k; check(a,n,k); cout<<check(a,n,k); }

• 
  

  -11

  

  tansuperhot2010  commented on Sept. 23, 2024, 2:25 a.m.

  những thằng nghiện hiện lên và nói huhuhaha lambogini hay là rollroyle 2 người bạn đi dạo với nhau 1 anh bảo tối qua tôi sang nhà anh haha

  This comment is hidden due to too much negative feedback. Show it anyway.

• 
  

  -8

  

  tansuperhot2010  commented on Sept. 23, 2024, 2:23 a.m.

  huhuhaha

  This comment is hidden due to too much negative feedback. Show it anyway.

• 
  

  -8

  

  tansuperhot2010  commented on Sept. 23, 2024, 2:23 a.m.

  hỏi cc hahaha

  This comment is hidden due to too much negative feedback. Show it anyway.

• 
  

  -28

  

  Itachi  commented on April 30, 2024, 12:41 p.m.

  include<bits/stdc++.h>

  using namespace std;

  define ll long long;

  int main(){

  ios::sync_with_stdio(false);
  cin.tie(0);cout.tie(0);
  int n,k;
  cin>>n;
  int a[n];
  for(int i=1;i<=n;i++){
      cin>>a[i];
  }
  cin>>k;
  int dem=0;
  for(int i=1;i<=n;i++){
      for(int j=i+1;j<=n;j++){
          if(a[i]+a[j]==k) dem++;
      }
  }
  cout<< dem;
  return 0;
  

  }

  This comment is hidden due to too much negative feedback. Show it anyway.