#include <stdio.h> int main(void) { int recv,num,i = 0; int flag[501] = {0}; scanf("%d\n",&num); for(i=0;i<num;i++){ scanf("%d\n",&recv); if(flag[recv] == 0) flag[recv] = 1; } for(i=0;i<500;i++) if(flag[i] == 1) printf("%d\n",i); }
