65分求解！

#include <bits/stdc++.h>
using namespace std;
struct xs{
    string mane,year,month,day,brithday;
}a[1000];
int main()
{
    int i,j,n,m;
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cin>>a[i].mane>>a[i].year>>a[i].month>>a[i].day;
        if(a[i].month.size()==1)a[i].month="0"+a[i].month; 
        if(a[i].day.size()==1)a[i].day="0"+a[i].day; 
        a[i].brithday=a[i].year+a[i].month+a[i].day;
    }
    for(i=1;i<=n;i++)
    {
        for(j=n;j>i;j--)
        {
            if(a[j].brithday<a[j-1].brithday)
            {
                swap(a[j].mane,a[j-1].mane);
                swap(a[j].year,a[j-1].year);
                swap(a[j].month,a[j-1].month);
                swap(a[j].day,a[j-1].day);
                swap(a[j].brithday,a[j-1].brithday);
            }
        }
    }
    for(i=1;i<=n;i++)
    {
        cout<<a[i].mane<<endl;
    }
}