#include <iostream>
#include <stdlib.h>
#include <math.h>

using namespace std;

void nhapMang(float *p, int n) {
	for (int i = 0; i < n; i++) {
		cout<<"a["<<i<<"] = ";
		cin>>*(p+i);
	}
}

void hienThiMang(float *p, int n) {
	for (int i = 0; i < n; i++) {
		cout<<"\t"<<*(p+i);
	}
}

float soDuongNhoNhat(float *p, int n) {
	float min;
	for (int i = 0; i < n; i++) {
		if (*(p+i) > 0) {
			min = *(p+i);
			break;
		}
	}
	for (int i = 0; i < n; i++) {
		if (*(p+i) < min && *(p+i) > 0) {
			min = *(p+i);
		}
	}
	return min;
}

void soSanh(float *p, int n) {
	float min = soDuongNhoNhat(p, n);
	cout<<"\nSo duong nho nhat la: "<<min<<endl;
	cout<<"Cac so co tri tuyet doi lon "<<min<<" la: "<<endl;
	for (int i = 0; i < n; i++) {
		if (fabs(*(p+i)) > min) {
			cout<<"So "<<*(p+i)<<" vi tri "<<i<<endl;
		}
	}
}

void xoaPhanTu(float *p, int &n, int k) {
	for (int i = k; i < n-1; i++) {
		*(p+i) = *(p+i+1);
	}
	n--;
	p = (float*)realloc(p, n * sizeof(float));
}

int main() {
	int n, k;
	float *p;
	do {
		cout<<"Nhap n: ";
		cin>>n;
	} while (n < 1 || n > 20);
	p = (float*)malloc(n * sizeof(float));
	nhapMang(p, n);
	cout<<"Mang vua nhap: "<<endl;
	hienThiMang(p, n);
	soSanh(p, n);
	cout<<"Nhap k: "; cin>>k;
	xoaPhanTu(p, n, k);
	hienThiMang(p, n);
	free(p);
	return 0;
}