POJ 1005.I Think I Need a Houseboat

#include <iostream>
#include <stdio.h>
#include <algorithm>
#include <iomanip>
#include <string.h>
#include <map>
#include <math.h>

using namespace std;

#define PI 3.141592653

int main(void) {
int n;
cin >> n;
double* a;
double* b;
int* m;
a = new double[n];
b = new double[n];
m = new int[n];
for (int i = 0; i < n; i++) {
cin >> a[i] >> b[i];
double l = sqrt(a[i] * a[i] + b[i] * b[i]);
double area = l*l*PI / 2;
int mm = area / 50;
m[i] = mm + 1;
}
for (int i = 0; i < n; i++) {
cout << "Property " << i + 1 << ": This property will begin eroding in year " << m[i] << ".\n";
}
cout << "END OF OUTPUT.";

//system("pause");
}