Advent2021/Day 8/Marcus/cpp/part1.cpp

#include <iostream>
#include <algorithm>
#include <math.h>
#include <string>

using namespace std;

struct Note
{
    string patterns[10];
    string outputs[4];
    
    friend istream &operator>>( istream  &input, Note &n ) { 
        for(int i = 0; i < 10; i++)
        {
            input >> n.patterns[i];
        }
        for(int i = 0; i < 4; i++)
        {
            input >> n.outputs[i];
        }
        return input;
    }
};

int main()
{
    Note note;
    int count = 0;
    while (cin >> note)
    {
        for(int i = 0; i < 4; i++)
        {
            switch(note.outputs[i].size())
            {
            case 2:
            case 3:
            case 4:
            case 7:
                count++;
                break;
            default:
                break;
            }
        }
    }
    
    cout << count << endl;
    
    return 0;
}