错了好多遍，不知道为啥出错，如果有大神发现，请求指点！！！
附错误代码（错的不知道怎么回事）：
#include<iostream>
#include<cstdio>
#include<algorithm>
using namespace std;
const int maxn = 32 + 5;
int hblock[maxn*maxn]; /*elevation*/
int main()
{
int n, m;
while(scanf("%d%d", &n, &m) != EOF)
{
if(n == 0 && m == 0)
break;
// memset(hblock, 0, sizeof(hblock));
for(int i = 0; i < m * n; i++)
scanf("%d", &hblock[i]);
hblock[m*n] = 2147483647;
// cout << hblock[m*n] << endl;
sort(hblock, hblock + m*n);
double v;
double h;
cin >> v;
v = v / 100.0; /*除以一个区的底面积，得到其高度*/
double mark = 0; /*标记被淹的极限*/
for(int i = 1; i <= m * n; i++)
{
v += hblock[i-1];
h = v / i; /**淹完一个时的高度**/
if(h < hblock[i])
{
mark = i;
break;
}
}
int cases = 0;
printf("Region %d
", ++cases);
printf("Water level is %.2lf meters.
", h);
printf("%.2lf percent of the region is under water.
", 100.0*mark/double(n*m)); /*double强制转换不可忘，不然会有大量损失*/
}
return 0;
}
正确代码：
#include <algorithm>
#include <iostream>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
using namespace std;
#define INF 0x7fffffff
int h[35 * 35], n, m;
double v, H, k;
int main()
{
int cas = 0;
while(scanf("%d%d", &n, &m), n)
{
n *= m;
for(int i = 0; i < n; i++)
scanf("%d", h + i);
h[n] = INF, n++;
sort(h, h + n);
scanf("%lf", &v);
v /= 100.0;
for(int i = 1; i <= n; i++)
{
v += h[i - 1];
H = v / i;
if(H < h[i])
{
k = i;
break;
}
}
printf("Region %d
", ++cas);
printf("Water level is %.2lf meters.
", H);
printf("%.2lf percent of the region is under water.
", 100.0 * k / (n - 1));
}
return 0;
}