@[武怡雯_](/user/472945) 你把当前的和定义为一个参数，m不要，循环条件改成i+sum<=n试试
by zhjzhmh @ 2021-09-06 20:10:21
@[zhjzhmh](/user/233815) 哦哦 wo试试 蟹蟹
by 武怡雯_ @ 2021-09-06 20:12:04
@[zhjzhmh](/user/233815) 还是不行qaq
by 武怡雯_ @ 2021-09-06 20:15:58
@[武怡雯_](/user/472945) 你没回shu(return)
by zhjzhmh @ 2021-09-06 20:18:51
回溯
by zhjzhmh @ 2021-09-06 20:21:51
@[武怡雯_](/user/472945) dfs中`i`应是小于 $m$ 而不是小于等于。
by Universal_xtr @ 2021-09-06 20:21:51
@[zhjzhmh](/user/233815) 加了也不行 www
by 武怡雯_ @ 2021-09-06 20:22:03
@[武怡雯_](/user/472945)
by Universal_xtr @ 2021-09-06 20:22:34
@[Universal_xtr](/user/540148) 改了之后就不输出了
哎
by 武怡雯_ @ 2021-09-06 20:24:18
```
#include<iostream>
using namespace std;
int n , m , f[10] = {1};
void print(int xx)
{
for(int i = 1; i < xx; ++i)
cout << f[i] <<"+";
cout << f[xx] << endl;
}
void dfs(int x,int y,int low)
{
if(y==n)
{
print(x-1);
return;
}
for(int i = low; i+y <= n; ++i)
{
f[x] = i;
dfs(x + 1,y+i,i);
}
}
int main()
{
cin >> n;
dfs(1,0,1);
return 0;
}
```
@[武怡雯_](/user/472945) 这样应该可以了
by zhjzhmh @ 2021-09-06 20:25:09