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总是WA..

Posted by perturbation at 2005-07-07 17:02:38 on Problem 2460
#include <fstream>
using namespace std;
void main(){
	int Stan=0,Ollie=0;
	int x[200000],y[200000],cx,cy;
	int len;
	ifstream finput("input.txt");
	finput>>len;
	for(int i=1;i<=len;i++){
		finput>>x[i]>>y[i];
	}
	finput.close();
	cx=x[(len+1)/2];
	cy=y[(len+1)/2];
	for(i=1;i<=len;i++){
		if((x[i]>cx&&y[i]>cy)||(x[i]<cx&&y[i]<cy))
			Stan++;
		else if((x[i]>cx&&y[i]<cy)||(x[i]<cx&&y[i]>cy))
			Ollie++;
	}
	ofstream foutput("output.txt");
	foutput<<Stan<<' '<<Ollie;
	foutput.close();
}

哪里出问题了啊?

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