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Cod sursa(job #541398)
#include<fstream.h>
#include<math.h>
ifstream fin("cmap.in");
ofstream fout("cmap.out");
long long a[10000][2],c[10000];
int main()
{
long long n, min=100000, i, j, s1, s2, k=0;
float d;
fin>>n;
for(i=1;i<=n;i++)
{
for(j=1;j<=2;j++)
fin>>a[i][j];
}
for(i=1;i<=n-1;i++)
for(j=i+1;j<=n;j++)
{
k++;
s1=a[i][1]-a[j][1];
s2=a[i][2]-a[j][2];
c[k]=s1*s1+s2*s2;
}
for(i=1;i<=k;i++)
if(min>c[i])
min=c[i];
d=sqrt(min);
fout<<d;
return 0;
}