通用OI快读/写代码模板

#include <bits/stdc++.h>
using namespace std;
inline 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 << 3) + (x << 1) + (ch ^ 48);
        ch = getchar();
    }
    return x * f;
}
inline void write(int x) 
{
    if (x < 0) {
        putchar('-');
        x = -x;
    }
    if (x > 9) write(x / 10);
    putchar(x % 10 + '0');
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cou.tie(0);
    return 0;
}