我的代码:
```cpp
#include<bits/stdc++.h>
using namespace std;
int n,a[101],num;
bool b[20010];
int main(){
scanf("%d",&n);
for(int i=0;i<n;i++)
scanf("%d",a+i);
for(int i=0;i<n;i++){
for(int j=i+1;j<n;j++){
int t=a[i]+a[j];
for(int k=0;k<n;k++){
if(a[k]==t)
b[t]=1;
}
}
}
for(int i=0;i<20010;i++){
if(b[i])
num++;
}
printf("%d",num);
return 0;
}
```
by dengyongjia133 @ 2023-08-21 21:45:51
@[123cat](/user/895614) 最里面循环从1开始，和是要整个找过去
by dino @ 2023-08-21 21:46:44
@[dengyongjia133](/user/746969) 你是不是叶公好桶
by bohemiao @ 2023-08-21 21:49:18
额
by dengyongjia133 @ 2023-08-21 21:49:59
咱能别提这事儿吗？
by dengyongjia133 @ 2023-08-21 21:50:27
```
#include<bits/stdc++.h>
using namespace std;
int n,a[102],sum;
int main(){
cin>>n;
for(int i=1;i<=n;i++) cin>>a[i];
for(int i=1;i<n-1;i++){
for(int j=i+1;j<n;j++){
for(int k=1;k<=n;k++){
if(a[i]!=a[j]&&a[i]+a[j]==a[k]) sum++;
}
}
}
cout<<sum;
return 0;
}
```
改了个寂寞
by bohemiao @ 2023-08-21 22:03:45
```
i<=n
```
by dino @ 2023-08-21 22:10:25
@[dino](/user/194756) j<=n
by dino @ 2023-08-21 22:10:57
@[123cat](/user/895614) 改改看
by dino @ 2023-08-21 22:17:08
@[dino](/user/194756) 无语；只比上次多了10分。
by bohemiao @ 2023-08-22 08:53:27