/C04033 - Loại bỏ trùng nhau
<Problem>
https://code.ptit.edu.vn/student/question/C04033#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#define max(i, j) ((i > j) ? i : j)
#define min(i, j) ((i < j) ? i : j)
int main() {
int t;
//scanf("%d", &t);
t = 1;
while (t--) {
int n;
scanf("%d", &n);
int arr[101];
scanf("%d", &arr[0]);
int minVal = arr[0];
int check[100000] = { false };
for (int i = 1; i < n; i++) {
scanf("%d", &arr[i]);
}
for (int i = 0; i < n; i++) {
if (check[arr[i]] == false) {
printf("%d ", arr[i]);
check[arr[i]] = true;
}
}
printf("\n");
}
return 0;
}