//转载而来，暂时还没看懂，有同学愿意的话可以测试一下
char buf[16 * 1024 * 1024 + 5]; // 10 MiB Buffer
int curpos = 0, iseof;
int nextInt()
{
int ret = 0;
if (iseof) return 0;
while (!('0' <= buf[curpos] && buf[curpos] <= '9'))
{
if (buf[curpos] == 0)
{
if (fgets(buf, 16 * 1024 * 1024, stdin) == NULL) iseof = true;
curpos = 0;
continue;
}
curpos++;
}
int flg = 0;
if (curpos && buf[curpos - 1] == '-') flg = -1;
else flg = 1;
while ('0' <= buf[curpos] && buf[curpos] <= '9')
{
ret = ret * 10 + (buf[curpos] - '0');
curpos++;
}
return ret * flg;
}
转载自WHU-二价氢
原文链接：https://b.ejq.me/2016/10/11/kuai-su-du-ru/
