Submission #3368693

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int n,a[100001],b[100001];
double sum,maxx=0;
int main(){
	cin>>n;
	for(int i=1;i<=n;i++)
		cin>>a[i]>>b[i];
	for(int i=1;i<=n-1;i++){
		for(int j=1;j<=n-1;j++){
			sum=sqrt((a[i]-a[j+1])*(a[i]-a[j+1])+(b[i]-b[j+1])*(b[i]-b[j+1]));
			if(sum>maxx)
				maxx=sum;
		}
	}
	printf("%.6f",(double)maxx);
	cout<<endl;
	return 0;
}

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