代码如下```cpp #include #include #include

using namespace std;

int main(){ char str1[101];//存输入数据 char str2[101];//输出数据 scanf("%[^\n]",str1);

//printf("%s",str1);
int length = strlen(str1);

for(int i = 0;i < length-1;i++){
    //printf("%d",str1[i]);
    str2[i]  = (int)str1[i] + (int)str1[i+1];
}

str2[length-1] = str1[length-1] + str1[0];

printf("%s",str2);


return 0;

}

[未开O2优化](https://www.luogu.com.cn/record/102242342)
[开了O2优化](https://www.luogu.com.cn/record/102242336)