快读

 1 #include <bits/stdc++.h>
 2 using namespace std;
 3 int read(){
 4     int flag=0,x=0;
 5     char a=getchar();
 6     while(a<'0'||a>'9'){
 7         if(a=='-')flag=1;
 8         a=getchar();
 9     }
10     while(a>='0'||a<='9'){
11         x=x*10+a-'0';
12         a=getchar();
13     }
14     return flag?-x:x;
15 }
16 int main(){
17     
18     return 0;
19 }

标签：std,10,int,flag,while,快读,getchar
来源： https://www.cnblogs.com/TFLSc1908lzs/p/15160049.html