ngôn ngữu c+++++++++++++++++++++++++++++++++++++ giúp mình với ạ

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a[6];
    cin>>a[1]>>a[2]>>a[3]>>a[4]>>a[5];
    int s[6]={};
    for(int i=1;i<=6;i++)
        {
            if(a[i]==a[1]) s[i]++;
            if(a[i]==a[2]) s[i]++;
            if(a[i]==a[3]) s[i]++;
            if(a[i]==a[4]) s[i]++;
            if(a[i]==a[5]) s[i]++;
        }
    bool kt=false;
    for(int i=1;i<=6;i++)
        {
            if(s[i]==4) kt=true;
        }
    if(kt==false) cout<<"NO";
    else cout<<"YES";
    return 0;
}

#include <bits/stdc++.h>using namespace std;map<int,int>mp;signed main(){
for(int i=0;i<5;i++){ int x; cin>>x; mp[x]++; } for(map<int,int>::iterator it=mp.begin();it!=mp.end();it++){ if(it->second>=4){ cout<<"YES"; return 0; } } cout<<"NO";}