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userId_undefined

油麦菜浙大任小粟

倔强青铜

2024-07-30 20:12:52

发布于：浙江

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#include <bits/stdc++.h>
using namespace std;
int n,a[1005],flag;
int main(){
	freopen("happy.in","r",stdin);
	freopen("happy.out","w",stdout);
	cin>>n;
	for(int i=1;i<=n;++i){
		cin>>a[i];
	}
	sort(a+1,a+n+1);
	for(int i=1;i<=n;++i){
		if(a[i]!=i*2){
			cout<<"sad";
			flag=1;
		}
	}
	if(!flag){
		cout<<"happy";
	}
	fclose(stdin);
	fclose(stdout);
	return 0;
}
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