杭电acm4500

#include <stdio.h>
#include <string.h>
#include <math.h>

int main()
{
    int n,m,a[30][30],i,j,max,flag_i,flag_j,sum;
    while(~scanf("%d%d",&n,&m) && (n||m))
    {
        memset(a,0,sizeof(a));
        for(i = 1; i<=n; i++)
        {
            for(j = 1; j<=m; j++)
            {
                scanf("%d",&a[i][j]);
            }
        }
        max = -10000;
        for(i = 1; i<=n; i++)
        {
            for(j = 1; j<=m; j++)
            {
                 sum = 0;
                //int q,w,e,r;
                if(i<n)
                {
                    if(a[i+1][j]*a[i][j]<0)
                        sum+= fabs(a[i+1][j]);
                    else
                        sum-= fabs(a[i+1][j]);
                }
                if(i>1)
                {
                    if(a[i-1][j]*a[i][j]<0)
                        sum+= fabs(a[i-1][j]);
                    else
                        sum-= fabs(a[i-1][j]);
                }
                if(j<m)
                {
                    if(a[i][j+1]*a[i][j]<0)
                        sum+= fabs(a[i][j+1]);
                    else
                        sum-= fabs(a[i][j+1]);
                }
                if(j>1)
                {
                    if(a[i][j-1]*a[i][j]<0)
                        sum+= fabs(a[i][j-1]);
                    else
                        sum-= fabs(a[i][j-1]);
                }
                if(sum>max)
                {
                    max = sum;
                    flag_i = i;
                    flag_j = j;
                }
            }
        }
        printf("%d %d %d\n",flag_i,flag_j,max);
    }

    return 0;
}