粘贴就完了

include int shu[1000]; int s[1000]; using namespace std; int main() {

int a,b,num=0,temp=0,m=0,k=0; scanf("%d",&a); for(int i=1;i<=a;i++) { scanf("%d",&shu[i]); b=shu[i]; s[b]=s[b]+1; if (s[b] == 1)

    num++;
if (s[b] > 1)
    shu[i] = 0;

} printf("%d\n",num); for (int i = 1; i <= a; i++) {

if (shu[i] != 0) {
    k++;
    shu[k] = shu[i];
}

} for (int j = 1; j <= num; j++) {

m = j;
for (int i = j + 1; i <= num; i++)
    if (shu[i] < shu[m] && shu[i] != 0)
        m = i;
temp = shu[j];
shu[j] = shu[m];
shu[m] = temp;

} for(int i=1;i<=num;i++) printf("%d ",shu[i]); return 0; }