题解 | #单组_一维数组#

#include <iostream>
using namespace std;
using ll=long long;
const int N=100100;
int a[N];
int main(void)
{
	ios::sync_with_stdio(false);
	cin.tie(0);
	ll sum=0;
	int n,i;
	cin>>n;
	for(i=1;i<=n;++i)
		cin>>a[i];
	for(i=1;i<=n;++i)
		sum+=a[i];
	cout<<sum;
	return 0;
}

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        long sum=0;
        int n,i;
        n=sc.nextInt();
        int[] a=new int[n+5];
        for(i=1;i<=n;++i)
            a[i]=sc.nextInt();
        for(i=1;i<=n;++i)
            sum+=a[i];
        System.out.print(sum);
    }
}

n=int(input())
a=list(map(int,input().split()))
# print(sum(a))
s=0
for i in a:
    s+=i
print(s)