[백준,c++] 14720번 - 우유 축제

문제

14720번: 우유 축제

 

코드

#include <iostream>
using namespace std;
int N, checkMilk,cnt;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin >> N;
    while (1) {
        cin >> checkMilk;
        if (checkMilk == 0)    break;
        else N--;
    }
    cnt++;
    for (int i = 0; i < N; i++) {
        int milk; cin >> milk;
        if (checkMilk == 0 && milk == 1) {
            cnt++;
            checkMilk = milk;
        }
        else if (checkMilk == 1 && milk == 2) {
            cnt++;
            checkMilk = milk;
        }
        else if (checkMilk == 2 && milk == 0) {
            cnt++;
            checkMilk = milk;
        }
    }
    cout << cnt;
}