inline int read(){ int s=0,w=1; char ch=getchar(); while(ch<‘0‘||ch>‘9‘){if(ch==‘-‘)w=-1;ch=getchar();} while(ch>=‘0‘&&ch<=‘9‘) s=s*10+ch-‘0‘,ch=getchar(); return s*w; }
ACM:快读读入技巧
原文:https://www.cnblogs.com/RioTian/p/12926113.html