15分求助！

求助！！！！！！！

#include<bits/stdc++.h>
using namespace std;
int a[65536];
int n;
int ret(string s){
    int len = s.length();
    long long tmp = 0;
    for(int i = 0;i < len;i++){
        if(s[i] == '.' || s[i] == ':'){
            if(0 <= tmp && tmp <= 255){
                tmp = 0;
                continue;
            }
        }
        tmp = tmp*10 + s[i]-'0';
    }
    return tmp;
}
bool check(string s){
    int len = s.length();
    int flag = 0,fla = 0;
    long long tmp = 0;
    for(int i = 0;i < len;i++){
    	if(s[i] == ':') flag += 1;
    	if(s[i] == '.') fla += 1;
        if(s[i] == '.' || s[i] == ':'){
            if(0 <= tmp && tmp <= 255){
                tmp = 0;
                continue;
            }
            else return false;
        }
        else if(s[i]<'0'||s[i]>'9') return false;
        if(i!=0 && tmp == 0 && s[i-1] == '0') return false;
        tmp = tmp*10 + s[i]-'0';
    }
    if(flag != 1 || fla != 3) return false;
    if(0 <= tmp && tmp <= 65535) return true;
    else return false;
}
int main(){
	cin >> n;
	for(int i = 1;i<=n;i++){
		string s1,s2;
		cin >> s1 >> s2;
		if(s1[0] == 'S'){
			if(check(s2) == 1){
				if(a[ret(s2)] == 0){
					a[ret(s2)] = i;
					cout << "OK" << endl;
				}
				else{
					cout << "FAIL" << endl;
				}
			}
			else{
				cout << "ERR" << endl;
			}
		}
		else{
			if(check(s2) == 1){
				if(a[ret(s2)] == 0){
					cout << "FAIL" << endl;
				}
				else{
					cout << a[ret(s2)] << endl;
				}
			}
			else{
				cout << "ERR" << endl;
			}
		}
	}
}