#include "nice_lines_c.h"
#include <math.h>
#define N 100
#define M 10000
#define X 10000000
#define Y ((long long) M * X + M + 1)
#define eps 1e-9
typedef long double ld;
void solve(int subtask_id, int n) {
static int aa[N], bb[N];
int i, a, a_, b, lower, upper;
long long y1, y2;
ld u1, u2, v1, v1_, v2, v2_;
a_ = -(M + 1), u1 = query(X, (long long) -(M + 1) * X + M), u2 = query(X, (long long) -M * X - M);
for (i = 0; i < n; i++) {
lower = a_, upper = M + 1, v1_ = -1, v2_ = -1;
while (upper - lower > 1) {
a = (lower + upper) / 2;
v1 = query(X, (long long) a * X + M);
v2 = query(X, (long long) (a + 1) * X - M);
if (fabsl(((v2 - v1) - (u2 - u1)) / (X - M * 2)) < eps)
lower = a;
else
upper = a, v1_ = v1, v2_ = v2;
}
a = upper, v1 = v1_, v2 = v2_;
y1 = (long long) (a_ + 1) * X - M, y2 = (long long) a * X + M;
b = roundl(((X - M * 2) * (v1 - u2) + y1 * (u2 - u1) - y2 * (v2 - v1)) / ((u2 - u1) - (v2 - v1)) - (ld) a * X);
aa[i] = a, bb[i] = b;
a_ = a, u1 = v1, u2 = v2;
}
the_lines_are(aa, bb);
}
Compilation message
/usr/bin/ld: /tmp/cconr7Ij.o: in function `solve':
nicelines.c:(.text+0x240): undefined reference to `roundl'
collect2: error: ld returned 1 exit status
