#include<stdio.h>
void deleteStudentID(int n,int ids[],int index_to_delete)
if(Index_to_delete<0||Index_to_delete>=n){
    printf("Invalid input.\n");
    return;
}
for(int i=index_to_delete;i<n-1;i++)
{
    ids[i]=ids[i+1];
}
int new_n=n-1;
for(int i=0;i<new_n;i++){
    printf("%d",ids[i]);
    if(i<new_n-1){
        printf("");
    }
}
printf("\n");
int N;
int index_to_delete;
if(scanf("%d",&N)!=1){
    return 1;
}
for(int i=0;i<N;i++){
    if(scanf("%d",&student_IDs[i])!=1){
        return 1;
    }
}
if(scanf("%d",&index_to_delete)!=1){
    return 1;
}
deleteStudentID(N,student_IDs,index_to_dele)