记录保存

#include<bits/stdc++.h>
using namespace std;
map<string,int> a;
int main()
{
    int n, mx = 0;
    cin >>n;
    for(int i = 1; i <= n; i ++)
    {
        string s[3];
        cin >> s[0] >> s[1] >> s[2];
        sort(s, s + 3);
        a[s[0] +" "+ s[1]+" " + s[2]] ++;//记得加空格
        mx = max(mx, a[s[0] +" "+ s[1]+" " + s[2]]);
    }
    cout << mx <<endl;
    return 0;
}