#include <math.h>
#include <stdio.h>
#include <string.h>
#define N 1000
#define INF 0x3f3f3f3f3f3f3f3fLL
long long min(long long a, long long b) { return a < b ? a : b; }
long long max(long long a, long long b) { return a > b ? a : b; }
int main() {
static int xx[N], yy[N];
static long long dd[N];
int n, m, i;
long long ans;
scanf("%d", &n);
for (i = 0; i < n; i++)
scanf("%d%d", &xx[i], &yy[i]);
ans = 0;
memset(dd, 0x3f, n * sizeof *dd), dd[0] = 0;
for (m = 1; m <= n; m++) {
int i_ = -1;
for (i = 0; i < n; i++)
if (dd[i] != -1 && (i_ == -1 || dd[i_] > dd[i]))
i_ = i;
ans = max(ans, dd[i_]);
dd[i_] = -1;
for (i = 0; i < n; i++)
dd[i] = min(dd[i], (long long) (xx[i] - xx[i_]) * (xx[i] - xx[i_]) + (long long) (yy[i] - yy[i_]) * (yy[i] - yy[i_]));
}
printf("%f\n", sqrt(ans) / 2);
return 0;
}
Compilation message
odasiljaci.c: In function 'main':
odasiljaci.c:17:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
17 | scanf("%d", &n);
| ^~~~~~~~~~~~~~~
odasiljaci.c:19:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
19 | scanf("%d%d", &xx[i], &yy[i]);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccFoddpS.o: in function `main':
odasiljaci.c:(.text.startup+0x206): undefined reference to `sqrt'
collect2: error: ld returned 1 exit status
