Card Game Cheat

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

vector<int>v1;
vector<int>v2;
void ReadTransfInsert(int n){
    string s;
    cin>>s;
    int a;
    if (s[0]>='2' && s[0]<='9')
        a=(s[0]-'0')*10;
    else if (s[0]=='T')
        a=100;
    else if (s[0]=='J')
        a=110;
    else if (s[0]=='Q')
        a=120;
    else if (s[0]=='K')
        a=130;
    else if (s[0]=='A')
        a=140;
    int b;
    if (s[1]=='H')
        b=3;
    else if (s[1]=='S')
        b=2;
    else if (s[1]=='D')
        b=1;
    else
        b=0;
    if (n==1)
        v1.push_back(a+b);
    else
        v2.push_back(a+b);
}

int main() {
    int ncasos;
    cin>>ncasos;
    while(ncasos--){
        int ncards;
        cin>>ncards;
        for (int i=0;i<ncards;i++)
            ReadTransfInsert(1);
        for (int i=0;i<ncards;i++)
            ReadTransfInsert(2);

        sort(v1.begin(),v1.begin()+ncards);
        sort(v2.begin(),v2.begin()+ncards);


        vector<int>::iterator it1=v1.begin();
        vector<int>::iterator it2=v2.begin();
        int ans=0;


        while(it1!=v1.end() && it2!=v2.end()){
            if ((*it1)>=(*it2))
                it2++;
            else{
                ans++;
                it1++;it2++;
            }
        }
        cout<<ans<<endl;
        v1.clear();
        v2.clear();
    }
    return 0;
}