C++(씨쁠쁠)(cplusplus)-백준(baekjoon)(BaekJoon)코딩 13701번:중복 제거 답

#include<iostream>
using namespace std;
int main() {
    int a[1 << 20] = { 0 }, t;
    while (~scanf("%d", &t)) {
        if (!((a[t / 32] >> (t % 32)) & 1)) {
            printf("%d ", t);
            a[t / 32] += 1 << (t % 32);
        }
    }
}