83396

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
83396	sh25_shengmy	求和	C++	Accepted	0 MS	256 KB	116	2026-01-25 20:31:36

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