@[lucy2012](/user/1252442) 你这输出是什么啊？加号没有，换行没有？
by cui_cui_sha @ 2024-04-20 16:38:36
sum每次都是0啊，有什么意义？
by cui_cui_sha @ 2024-04-20 16:40:59
```cpp
#include <bits/stdc++.h>
using namespace std;
int n,ans[50],cnt = 0;
void dfs(int sum){
if (sum == n) {
if (cnt == 1) return;
for (int i = 1; i <= cnt; i++) {
printf("%d",ans[i]);
if (i != cnt) printf("+");
}
printf("\n");
return;
}
for (int i = ans[cnt]; i <= (n - sum) / 2; i++) {
if (i == 0) continue;
cnt++;
ans[cnt] = i;
dfs(sum + i);
ans[cnt] = 0;
cnt--;
}
cnt++;
ans[cnt] = n - sum;
dfs(n);
ans[cnt] = 0;
cnt--;
return;
}
int main(){
scanf("%d",&n);
dfs(0);
return 0;
}
```
by liuruiqing @ 2024-04-20 16:42:41
@[lucy2012](/user/1252442) 我还是不太理解你的代码
by liuruiqing @ 2024-04-20 16:43:17
```
#include<bits/stdc++.h>
using namespace std;
long long n, num[111];
void dfs(int i, int x)
{
if (x == 0)
{
for (int j = 1; j < i; j++)
{
if (j > 1) cout << '+';
cout << num[j];
}
cout << endl;
}
for (int v = num[i - 1]; v <= x && v < n; v++)
{
num[i] = v;
dfs(i + 1, x - v);
}
}
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n;
num[0] = 1;
dfs(1, n);
return 0;
}
```
by cui_cui_sha @ 2024-04-20 16:43:52
@[lucy2012](/user/1252442) 我也不太理解你的代码
by cui_cui_sha @ 2024-04-20 16:44:17