int read() {
	int x = 0, f = 1;
	char ch = getchar();
	for (; ch < '0' || ch > '9'; ch = getchar()) if (ch == '-') f = -1;
	for (; ch >= '0' && ch <= '9'; ch = getchar()) x = (x << 3) + (x << 1);
	return x * f; 
}

void write(int x) {
	if (x < 0) putchar('-'), x = -x;
	if (x > 9) write(x / 10);
	putchar(x % 10 + '0');
}

这份代码中如果想读入或输出 -2147483648 会爆掉，有没有不用 long long 的解决方法