下面C++代码执行后的输出是？（ ）

int n, masks, days, cur;

n = 17, masks = 10, days = 0;
cur = 2;
while (masks != n) {
    if (cur == 0 || cur == 1)
        masks += 7;
    masks -= 1;
    days += 1;
    cur = (cur + 1) % 7;
}

cout << days;

{{ select(1) }}

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