https://vjudge.net/problem/UVA-815
题意:一个n*m的方格区域，共有n*m个方格，每个方格是边长为10米的正方形，整个区域的外围是无限高的高墙，给出这n*m个方格的初始高度，和洪水的总体积，计算灌入洪水后这个方格区域的水面高度，以及洪水淹没比例。
思路：
看这张图就很容易明白。
#include<iostream>
#include<algorithm>
using namespace std; int ans[]; int main()
{
//freopen("D:\\txt.txt", "r", stdin);
int m, n, kase = ;
double flood, percent;
while (cin >> m >> n,m&&n)
{
percent = ;
for (int i = ; i < m*n; i++)
cin >> ans[i];
cin >> flood;
flood /= 100.0;
sort(ans, ans + m*n);
double high;
for (int i = ; i <= m*n; i++)
{
flood += ans[i - ];
high = flood / i;
if (high <= ans[i])
{
percent = (double)i / (m*n);
break;
}
} cout << "Region " << ++kase << endl;
printf("Water level is %.2lf meters.\n", high);
printf("%.2lf percent of the region is under water.\n\n", percent * );
}
return ;
}
