由于作者会坑我们，所以我们要用高精度算法

代码如下：

using namespace std;
string x,y;
int a[101],b[101],c[101];
int main(){
    cin>>x>>y;
    int len1 = x.size(),len2 = y.size();
    for(auto i = 0;i<len1;++i){
        a[i] = x[len1-1-i]-'0';
    }
    for(auto i = 0;i<len2;++i){
        b[i] = y[len2-1-i]-'0';
    }
    int str = max(len1,len2);
    for(auto i = 0;i<str;++i){
        c[i] += a[i]+b[i];
        if(c[i]>=10){
            c[i+1]++;
            c[i]%=10;
        }
    }
    while(str>1 and c[str] == 0) str--;
    for(auto i = str;i>=0;--i){
        cout<<c[i];
    }
    return 0;
}