这道题典型的签到题

#include <bits/stdc++.h>
using namespace std;
int main(void)
{
    int n;
    cin>>n;
    for (int i=1;i<=n;i++)
    {
        if (i%2!=0)
        {
            cout<<"签到"<<endl;
        }
        else if (i%2==0)
        {
            cout<<"QAQ"<<endl;
        }
    }
    return 0;
}

水题

#include <iostream>
using namespace std;
int main()
{
    int n = 0;
    cin >> n;
    int i = 1;
    while(i<=n)
    {
        if(i%2) cout << "签到" << endl;
        else cout << "QAQ" << endl;
        i++;
    }
    return 0;
}

#include <stdio.h>
#include <algorithm>
#include <math.h>
using namespace std;
int n;
int main() {
    scanf("%d",&n);
    int k=1;
    while(k<=n) {
        if(k&1)
            printf("签到\n");
        else
            printf("QAQ\n");
        k++;
    }
    return 0;
}