#include <iostream>
#include <stdio.h>
using namespace std;

int k,c=0;
char a[100000][4],temp[4],s;
int match(int o);
int main()
{
    while (scanf("%d",&k)==1)
    {
        s=getchar();
        if (s==EOF)
            return 0;
        int at=0;
        for (int i=0;i<k;i++)
        {
            temp[0]=getchar();
            temp[1]=getchar();
            temp[2]=getchar();
            temp[3]=getchar();
            s=getchar();
            if (at==0)
            {
                a[0][0]=temp[0];
                a[0][1]=temp[1];
                a[0][2]=temp[2];
                a[0][3]=temp[3];
                at++;
                printf("New! 1\n");
            }
            else
            {
                for (int o=0;o<at;o++)
                {
                    if (match(o))
                    {
                        printf("Old! %d\n",o+1);
                        c=1;
                    }
                }
                if (c==0)
                {
                    a[at][0]=temp[0];
                    a[at][1]=temp[1];
                    a[at][2]=temp[2];
                    a[at][3]=temp[3];
                    printf("New! %d\n",at+1);
                    at++;
                }
                else
                    c=0;
            }
        }
    }
    //system("pause");
    return 0;
}

int match(int o)
{
    for (int y=0;y<4;y++)
    {
        if (a[o][y]!=temp[y])
            return 0;
    }
    return 1;
}

本來讀取會造成WA line:6

改好之後一直試都TLE.....