参考https://blog.csdn.net/weixin_43960287/article/details/85337291
1.用scanf,printf代替cin,cout
2.取消同步和绑定
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ios::sync_with_stdio(false);
cin.tie(0);
//cout.tie(0);
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此时只能用cin,cout
3.对整型输入输出，将每个数字变成字符
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inline int read()
{
int x=0;int f=1;char s=getchar();
while(s<'0' or s>'9')
{
if(s=='-')
f-=1;
s=getchar();
}
while(s>='0' and s<='9')
{
x=x*10+s-'0';
s=getchar();
}
return x*f;
}
void write(int x)
{
if(x/10>0) write(x/10);
putchar(char(x%10+'0'));
}
int main()
{
//freopen("input.txt","r",stdin);
int n=read();
cout<<n<<endl;
write(200);
return 0;
}
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