ac 棨戟 · 发布于 2026-08-05 · 浏览 85 回复 0 include using namespace std; int main(){ long long a,b,c; cin>>a>>b>>c; if(c-b==2&&c-a==1)cout<<"3"; if(a-b==0&&a-c==2)cout<<"2"; return 0; }
