我擦,这道题的代码写的那是一个纠结,写出来之后自己看着也是非常的搓。。这是道水题啊,还纠结了这么久,,太弱了。。。。。。

   思路:由于只有1000个点,所以可以枚举,复杂度为(n*n),是可以过的。对于每个点,枚举去掉每条边后的值,取最小的即可。

ac代码:

#include <iostream>
#include <cstdio>
#include <string.h>
#include <cmath>

using namespace std;
#define min(x,y) x<y ? x:y
#define max(x,y) x>y ? x:y
const int N = 1010;
int num[N],leftedge[N],rightedge[N],sum[N],ans[N];

void init()
{
    memset(num,0,sizeof(num));
    memset(leftedge,0,sizeof(leftedge));
    memset(rightedge,0,sizeof(rightedge));
    memset(sum,0,sizeof(sum));
    memset(ans,0,sizeof(ans));
}
int main()
{
    int numcase;
    scanf("%d",&numcase);
    for(int k = 1;k <= numcase;++k)
    {
        init();
        int n;
        scanf("%d",&n);
        int total = 0;
        for(int i = 1;i <= n;++i)
        {
            scanf("%d",&num[i]);
            sum[i] = sum[i-1] + num[i];
            total += num[i];
        }
        for(int i = 2;i <= n-1;++i)
        {
            leftedge[i] = i-1;
            rightedge[i] = i;
        }
        leftedge[1] = n;
        rightedge[1] = 1;
        leftedge[n] = n-1;
        rightedge[n] = n;
        for(int i = 1;i <= n;++i)
        {
            int min = 100000000;
            for(int j = 1;j <= n;++j)
            {
                if(j == leftedge[i] || j == rightedge[i])
                {
                    ans[i] = total - num[j];
                    if(ans[i]<min)
                    {
                        min = ans[i];
                    }
                }
                else
                {
                    int x;
                    if(j > i)
                      x=fabs(sum[j-1] - sum[i-1]);
                    else
                      x=fabs(sum[j] - sum[i-1]);
                    int y=total - x - num[j];
                    int mi = min(x,y);
                    int ma = max(x,y);
                    ans[i] = total - num[j] + mi;
                    if(ans[i] < min && ans[i] > 0)
                    {
                        min = ans[i];
                             }
                }
            }
            ans[i] = min;
        }
        printf("Case #%d: ",k);
        for(int i = 1;i < n;++i)
        {
            printf("%d ",ans[i]);
        }
        printf("%d",ans[n]);
        puts("");
    }
    return 0;
}