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POJ 1005 I Think I Need a Houseboat

Vontroy — Sat, 02 Oct 2010 11:57:00 GMT

/******************************************
��N��要n�q?br />讑֍�圆面�U��ؓ S�Q�半径�ؓ r
S = 50 * n;
S = (PI * r * r) / 2;
解得 n = (PI * r * r ) / 100;
所�l�点到原点距��?nbsp;len = sqrt( x * x + y * y );
令len = r卛_��解出 n
*******************************************/

#include <iostream>
#include <cstdio>
#include <cmath>

const double PI = 3.1415927;

using namespace std;

int main()
{
    double x, y;
    int cnt;

    cin >> cnt;
    int pro = 1;
    while( cnt-- )
    {
        cin >> x >> y;
        double len = sqrt( x * x + y * y );
        int n = (PI * len * len ) / (100 * 1.0);
        printf("Property %d: This property will begin eroding in year %d.\n", pro++, n + 1);
    }
    cout << "END OF OUTPUT.\n";
    return 0;
}

Vontroy 2010-10-02 19:57 发表评论

POJ 1004 Financial Management

Vontroy — Sat, 02 Oct 2010 11:31:00 GMT

#include <iostream>
#include <cstdio>

using std :: cin;
using std :: cout;
using std :: endl;

int main()
{
    double ans;
    double tmp;
    ans = 0;
    for( int i = 0; i < 12; i++ )
    {
        cin >> tmp;
        ans += tmp;
    }
    cout << "$" << ans / 12.0<< endl;
    return 0;
}

Vontroy 2010-10-02 19:31 发表评论

HDU 1056 HangOver

Vontroy — Sat, 02 Oct 2010 08:08:00 GMT

#include <iostream>
#include <cstdio>

using namespace std;

int main()
{
    double len;
    double tmp;
    int ans;

    while( cin >> len, len )
    {
        tmp = 0;
        ans = 1;
        while( ans++ )
        {
            tmp += 1 / ( ans * 1.0 );
            if( tmp >= len )
            {
                cout << ans - 1 << " card(s)" << endl;
                break;
            }
        }
    }
    return 0;
}

Vontroy 2010-10-02 16:08 发表评论