文字を分割して読み込んだりCPP

cpp

#include <iostream>
#include <string>
#include <vector>
#include <cstdlib>
#include <typeinfo>
#include <sstream>
using namespace std;

vector<string> split(const string &s, char delim) {
    vector<string> elems;
    stringstream ss(s);
    string item;
    while (getline(ss, item, delim)) {
    if (!item.empty()) {
            elems.push_back(item);
        }
    }
    return elems;
}

int main()
{
    string str;
    int count = 0;
    getline(cin, str);
    count = (atoi(str.c_str()));
    int data[count][2];
    char delim = ' ';

    vector<string> splited;
    int a = 0;
    int b = 0;
    int a_win = 0;
    int b_win = 0;
    for (int i = 0; i < count; ++i) {
        getline(cin, str);
        splited = split(str, delim);
        a = atoi(splited[0].c_str());
        b = atoi(splited[1].c_str());
        if(a > b) ++a_win;
        if(b > a) ++b_win;
    }
    cout << a_win << " " << b_win << endl;
    return 0;
}