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摘要： 快读： 1 int read () { 2 int k=0,f=1; 3 char c=getchar(); 4 while (c<'0'||c>'9') {if (c=='-') f=-1;c=getchar();} 5 while (c>='0'||c<='9') {k=k*10+c-'0';c 阅读全文