AC记录https://hydro.ac/d/atcoder/record/66beb59cb385d8ada2dd9dd7

#include <bits/stdc++.h>
#include <algorithm>

#define endl '\n';


const int N = 1e6 + 10;
const int M = 2e6 + 10;
const int P = 998244353; 
const int Base = 3221225477;
const int INF = 0x3f3f3f3f3f3f3f3f; 

int mod(int x)
{
   return x % P;
}
using namespace std;
int n,m;
signed main()
{
	cin >> n;
	int a[n];
	for(int i = 0;i < n;i++)
	{
		cin >> a[i];
	}
	cin >> m;
	for(int i = 0;i < m;i++)
	{
		int p,x;
		cin >> p >> x;
		int ans = 0;
          for(int j = 0;j < n;j++)
          {
          	if(j != p-1)
          	{
          		ans+=a[j];
          	}else {
          		ans+=x;
          	}
          }
          cout << ans << endl;
	}
	return 0;
}