문제

Code

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

using namespace std;
int arr[10];
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    int max = 1;
    string room;
    cin >> room;
    for(auto a : room)
    {
        if(a == '6' || a =='9'){
            arr[6]++;
        }
        else
        {
            arr[a-'0']++;
        }
    }
    arr[6] = arr[6] / 2 + arr[6] % 2;
    for(auto a : arr)
    {
        if(a > max)
            max = a;
    }
    cout << max;
    return 0;
}

: char -> int 바꿀 때
  char-'0' = int