#include <stdio.h>
int main() {
int i, j;
int n;
int mid;
mid = n / 2;
for (i = 0; i < n + 2; i++) {
for (j = 0; j < n; j++) {
if (j == mid) {
} else {
}
}
}
for (i = 0; i < n + 2; i++) {
for (j = 0; j < n; j++) {
}
}
for (j = 0; j < n + 2; j++) {
for (i = 0; i < n; i++) {
if (i == mid) {
} else {
}
}
}
return 0;
}
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