C++(씨쁠쁠)(cplusplus)-백준(baekjoon)(BaekJoon)코딩 3052번:나머지 답

#include <iostream>
using namespace std;
int main() {
    int num, arr[10], cnt = 0;
    for (int i = 0; i < 10; i++)
    {
        cin >> num;
        arr[i] = num % 42;
    }
    for (int i = 0; i < 10; i++)
    {
        for (int j = i+1; j < 10; j++)
        {
            if ((arr[i] == arr[j]) && (arr[i]!=-1&&arr[j]!=-1))
                arr[j] = -1;
        }
    }
    for (int i = 0; i < 10; i++)
    {
        if(arr[i]!=-1)
        cnt++;
    }
    cout << cnt <<'\n';
    
}