#include "park.h"
#include <string.h>
const int N = 1400;
int t, n;
int query(int *used, int a, int b) {
int tmp;
if (a > b)
tmp = a, a = b, b = tmp;
return Ask(a, b, used);
}
void answer(int a, int b) {
int tmp;
if (a > b)
tmp = a, a = b, b = tmp;
Answer(a, b);
}
void Detect(int t_, int n_) {
t = t_, n = n_;
if (t == 1) {
static int used[N];
for (int i = 0; i < n; i++)
for (int j = i + 1; j < n; j++) {
for (int k = 0; k < n; k++)
used[k] = k == i || k == j ? 1 : 0;
if (query(used, i, j))
answer(i, j);
}
} else if (t <= 4) {
static int ii[N], used[N];
for (int j = 0; j < n; j++) {
int lower = 0, upper = j;
while (upper - lower > 1) {
int h = (lower + upper) / 2;
for (int i = 0; i < n; i++)
used[i] = 1;
for (int h_ = h; h_ < j; h_++)
used[ii[h_]] = 0;
if (query(used, 0, j))
upper = h;
else
lower = h;
}
for (int h = j; h > upper; h--)
ii[h] = ii[h - 1];
ii[upper] = j;
}
for (int h = 1; h < n; h++) {
int lower = -1, upper = h - 1;
while (upper - lower > 1) {
int g = (lower + upper) / 2;
for (int i = 0; i < n; i++)
used[i] = 0;
for (int f = 0; f <= g; f++)
used[ii[f]] = 1;
used[ii[h]] = 1;
if (query(used, 0, ii[h]))
upper = g;
else
lower = g;
}
answer(ii[upper], ii[h]);
}
}
}
Compilation message
park.c: In function 'Detect':
park.c:25:14: error: storage size of 'used' isn't constant
25 | static int used[N];
| ^~~~
park.c:25:14: warning: unused variable 'used' [-Wunused-variable]
park.c:34:14: error: storage size of 'ii' isn't constant
34 | static int ii[N], used[N];
| ^~
park.c:34:21: error: storage size of 'used' isn't constant
34 | static int ii[N], used[N];
| ^~~~
park.c:34:21: warning: unused variable 'used' [-Wunused-variable]
park.c:34:14: warning: unused variable 'ii' [-Wunused-variable]
34 | static int ii[N], used[N];
| ^~
