Submission #4829899

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int x[10001],y[10001];
long double s;
inline int read()
{
    int X=0,w=0; char ch=0;
    while(!isdigit(ch)) {w|=ch=='-';ch=getchar();}
    while(isdigit(ch)) X=(X<<3)+(X<<1)+(ch^48),ch=getchar();
    return w?-X:X;
}
void p(){
	printf("\n");
}
int main(){
	int n=read();
	for(int i=1;i<=n;i++){
		x[i]=read();y[i]=read();
	}
	for(int i=1;i<=n;i++){
		for(int j=i+1;j<=n;j++){
			long double t=sqrt((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]));
			s=t>s?t:s;
		}
	}
	printf("%.6Lf",s);
	p();
	return 0;
}

Submission Info

Judge Result