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快速读入

Posted by yygy at 2014-07-01 18:49:23 
bool dig(char x){return x>='0'&&x<='9';}
int getval()
{
	int ret=0,sign=1;
	char c;
	while(!dig(c=getchar())&&c!='-');
	if(c=='-')sign=-1;
	else ret=c-'0';
	while(dig(c=getchar()))ret=ret*10+c-'0';
	return ret*sign;
}
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