__int128
输入:
__int128 read()
{
__int128 x = 0;
char c = getchar();
while (c < 48 || c > 57)
c = getchar();
while (c > 47 && c < 58)
x = (x << 1) + (x << 3) + c - 48, c = getchar();
return x;
}
__int128
输出:
void write(__int128 x)
{
if (x > 9)
write(x / 10);
putchar(x % 10 + 48);
}
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