@[TigerDuan](/user/927587) 您定义一个二维数组他不香吗
by Indufty_666 @ 2023-05-20 10:43:53
@[TigerDuan](/user/927587)
## AC代码
```cpp
#include <bits/stdc++.h>
int main()
{
long long n,m;
long long tmp,s=0;
scanf("%lld %lld",&n,&m);
for (long long i=1;i<=n;i++)
{
for (long long j=1;j<=m;j++)//这是j++
{
scanf("%lld",&tmp);
if (i==1||j==1||i==n||j==m)
{
s+=tmp;
}
}
}
printf("%lld",s);
return 0;
}
```
by Yangbowen0108 @ 2023-05-20 10:45:11
楼上正解
by zjw806903 @ 2023-05-20 10:48:08
em
by TigerDuan @ 2023-05-20 10:51:25
[已AC](https://www.luogu.com.cn/record/110778675)
by TigerDuan @ 2023-05-20 11:06:33
[更优解(卡常)](https://www.luogu.com.cn/record/110780192)
by TigerDuan @ 2023-05-20 11:18:33