输入输出挂

 1 bool Finish_read;
 2 template<class T>inline void read(T &x)
 3 {
 4     Finish_read=0;
 5     x=0;
 6     int f=1;
 7     char ch=getchar();
 8     while(!isdigit(ch))
 9     {
10         if(ch==‘-‘)f=-1;
11         if(ch==EOF)return;
12         ch=getchar();
13     }
14     while(isdigit(ch))x=x*10+ch-‘0‘,ch=getchar();
15     x*=f;
16     Finish_read=1;
17 }
18 template<class T>inline void print(T x)
19 {
20     if(x/10!=0)print(x/10);
21     putchar(x%10+‘0‘);
22 }
23 template<class T>inline void writeln(T x)
24 {
25     if(x<0)putchar(‘-‘);
26     x=abs(x);
27     print(x);
28     putchar(‘\n‘);
29 }
30 template<class T>inline void write(T x)
31 {
32     if(x<0)putchar(‘-‘);
33     x=abs(x);
34     print(x);
35 }