@[zhongdongyifan](/user/1194487) 两层循环都是m，改成外层m内层n就可以啦^_^
by Papy @ 2024-03-03 14:51:15
@[Papy](/user/595697) 谢谢
by zhongdongyifan @ 2024-03-03 14:56:13
```
#include<bits/stdc++.h>
using namespace std;
int n,m,sum,c;
int main(){
cin>>m>>n;
for(int i=1;i<=m;i++){
for(int j=1;j<=n;j++){
cin>>c;
if((i==1||i==n)||(j==1||j==n)){
sum+=c;
}
}
}
cout<<sum;
return 0;
}
```
@[Papy](/user/595697) 还错了
o(╥﹏╥)o
by zhongdongyifan @ 2024-03-03 14:58:07
@[Papy](/user/595697)
by zhongdongyifan @ 2024-03-03 14:58:41
@[zhongdongyifan](/user/1194487) 我在看我在看awq
by Papy @ 2024-03-03 15:01:49
@[zhongdongyifan](/user/1194487) 哦哦哦哦
内部i判断不是n
by Papy @ 2024-03-03 15:06:58
@[zhongdongyifan](/user/1194487) 因为i循环的1-m，里面应该是i==m才对
by Papy @ 2024-03-03 15:07:40
@[Papy](/user/595697) AC了\(^o^)/~
by zhongdongyifan @ 2024-03-03 15:12:49
@[zhongdongyifan](/user/1194487) (/^o^)/恭喜！～加油加油！
by Papy @ 2024-03-03 15:16:33