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2023-09-07 20:51:56
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 ......
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=getchar();} 6 return f*k; 7 }
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