[백준]2164-카드2(설명X)

#include <iostream>
using namespace std;
 
int main()
{
    int argc;
    cin >> argc;
    if (argc == 1) {
        cout << 1;
        return 0;
    }
    size_t* num = new size_t[argc]{ 0, };
    num[0] = 1;
    size_t point = 1;
    for (size_t i = 1; i < argc - 1; point++) {
        if (num[point % argc] == 0) {
            while (num[(++point) % argc] != 0);
            num[point % argc] = 1;
            i++;
        }
    }
    for (size_t i = 0; i < argc; i++)
    {
        if (num[i] == 0) {
            cout << i + 1;
            break;
        }
    }
    return 0;
}