#include<bits/stdc++.h>
using namespace std;
__int128 n,m,a[110][110],ans,f[110][110];
void scan(__int128 &x)//输入
{
x = 0;
int f = 1;
char ch;
if((ch = getchar()) == '-') f = -f;
else x = x*10 + ch-'0';
while((ch = getchar()) >= '0' && ch <= '9')
x = x*10 + ch-'0';
x *= f;
}
void _print(__int128 x)
{
if(x > 9) _print(x/10);
putchar(x%10 + '0');
}
void print(__int128 x)//输出
{
if(x < 0)
{
x = -x;
putchar('-');
}
_print(x);
}
int main(){
scan(n);
scan(m);
for(int i=1; i<=n; i++){
for(int j=1; j<=m; j++){
scan(a[i][j]);
}
}
for(int k=1; k<=n; k++){
__int128 Max=0; memset(f,0,sizeof(f));
for(int i=0; i<=m; i++){
for(int j=0; i+j<=m; j++){
if(j!=0) f[i][j]=max(f[i][j],f[i][j-1]+a[k][m-j+1]*(2<<(i+j-1)));
if(i!=0) f[i][j]=max(f[i][j],f[i-1][j]+a[k][i]*(2<<(i+j-1)));
}
}
for(int i=0; i<=m; i++) Max=max(Max,f[i][m-i]);
ans+=Max;
}
print(ans);
return 0;
}
输入:5 5 0 0 0 0 0 0 0 0 0 1 876 1 566 920 598 259 945 123 659 997 176 478 293 464 278 应输出118214
实输出118214