65pts求条

#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll n;
string ip[1005];
int main(){
    //freopen("code.in","r",stdin);
    //freopen("code.out","w",stdout);
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    for(ll i=1;i<=n;i++){
        string op,ad;
        cin>>op>>ad;
        ll a,b,c,d,e;
        if(sscanf(ad.c_str(),"%d.%d.%d.%d:%d",&a,&b,&c,&d,&e)!=5){
            cout<<"ERR"<<endl;
            continue;
        }
        if(!(a<=255&&b<=255&&c<=255&&d<=255&&e<=65535)){
            cout<<"ERR"<<endl;
            continue;
        }
        if(op=="Server"){
            bool flag=true;
            for(ll j=1;j<=i;j++){
                if(ip[j]==ad){
                    cout<<"FAIL"<<endl;
                    flag=false;
                    break;
                }
            }
            if(flag){
                cout<<"OK"<<endl;
                ip[i]=ad;
            }
        }else{
            bool flag=false;
            for(ll j=1;j<=i;j++){
                if(ip[j]==ad){
                    cout<<j<<endl;
                    flag=true;
                    break;
                }
            }
            if(flag==false){
                cout<<"FAIL"<<endl;
            }
        }
    }
    //fclose(stdin);
    //fclose(stdout);
    return 0;
}