```cpp
for(int i=1;i<=3;i++){
for(int j=i+1;j<=4;j++){
```
改成
```cpp
for(int i=1;i<=2;i++){
for(int j=3;j<=4;j++){
```
不然会计算到a[1]*a[2]
by yzdcde @ 2024-07-16 17:57:23
@[duminghao123](/user/1120480)
by yzdcde @ 2024-07-16 18:20:12
@[yzdcde](/user/373620) 非常感谢！
by duminghao123 @ 2024-07-16 20:46:04