教教我

int n; cin >> n; cout << 43

#include<iostream> using namespace std; int main(){ int n,sum=0; cin>>n; for(int i=0;i<=n;i++){ int a; cin>>a; sum+=a; } cout<<sum; return 0; }

#include <iostream> using namespace std; int main() { int n, sum=0; cin >> n; for (int i = 1; i <= n; i++) { int a; cin >> a; sum += a; } cout << sum; return 0; }

#include<stdio.h> int n,s,b,a; int main(){ scanf("%d", &b); for(n=1;n<=b;n++){ scanf("%d", &a); s+=a; } printf("%d",s); return 0; }