神秘缺省源

#include<bits/stdc++.h>
using namespace std;
constexpr int maxn=;
int read()
{
    int x=0,f=1;
    char ch=getchar();
    while (ch<'0' || ch>'9')
    {
        if (ch == '-') f=-1;
        ch=getchar();
    }
    while (ch>='0' && ch<='9')
    {
        x=(x<<1)+(x<<3)+ch-'0';
        ch=getchar();
    }
    return x*f;
}
int main()
{
    
    return 0;
}

#include<bits/stdc++.h>
#define Honkai ios::sync_with_stdio(0);
#define StarRail cin.tie(0);cout.tie(0);
#define endl '\n'
using namespace std;
constexpr int maxn=;
int main()
{
	Honkai StarRail
	
	return 0;
}

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
int read() {int x=0,f=1;char ch=getchar();while (ch<'0' || ch>'9'){if (ch == '-') f=-1;ch=getchar();}while (ch>='0' && ch<='9'){x=(x<<1)+(x<<3)+ch-'0';ch=getchar();}return x*f;}
int main()
{
	
	return 0;
}