83599

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
83599	sh25_huangse	求和	C++	Accepted	0 MS	248 KB	120	2026-01-28 19:48:28

#include<iostream> using namespace std; int main(){ int n; cin>>n; cout<<(n-1)+(n+1); return 0; }