快读快写

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inline int read()
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{
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  int x = 0,f = 1;
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  char ch = getchar();
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  while (ch < '0' || ch>'9')
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  {
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    if (ch == '-')
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      f = -1;
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    ch = getchar();
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  }
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  while (ch >= '0' && ch <= '9')
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  {
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    x = (x << 1) + (x << 3) + (ch ^ 48);
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    ch = getchar();
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  }
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  return x * f;
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}

1
#include <iostream>
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using namespace std;
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typedef long long LL;
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inline LL read()
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{
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  LL x = 0, f = 1;
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  char ch = getchar();
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  while (!isdigit(ch))
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  {
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    if (ch == '-')
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      f = -1;
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    ch = getchar();
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  }
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  while (isdigit(ch))
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  {
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    x = (x << 1) + (x << 3) + (ch ^ 48);
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    ch = getchar();
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  }
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  return x * f;
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}
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inline void write(LL x)
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{
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  if (x < 0) putchar('-'), x = -x;
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  if (x > 9) write(x / 10);
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  putchar(x % 10 + '0');
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}
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int main()
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{
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  int a = read();
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  write(a);
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  return 0;
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}