#include<bits/stdc++.h>

using namespace std;

long long n,S,a[1000001];

int main ()

{

cin>>n;

S=0;

for(int i=1;i<=n;i++)

cin>>a[i];

for(int i=1;i<=n;i++)

S=S+a[i];

cout<<S;

}

*Vì bạn ko nói ngôn ngữ nào nên mình làm C++ nhé

(by @chiakisuzuki02012008)

Program qtruong;
Uses crt;
Var n, i: integer;
      s: real;
      b:array[1..1000000] of longint;
Begin
Clrscr;
Write('Nhap n = '); readln(n);
For i:=1 to n do
Begin
      Write('b[',i,']=');
      readln(b[i]);
end;
s:=0;
For i:=1 to n do s:=s+b[i];
Writeln('Tong day so do la: ',s:10:10);
readln
end.