ural 1910. Titan Ruins: Hidden Entrance（Titan Ruins系列题目）

#include <iostream>
#include <vector>
using namespace std;
int main()
{
int n;
cin >> n;
int *a = new int[n+1];
for (int i = 1; i <= n; ++i)
cin >> a[i];
int max = 0;
int index = 0;
for (int i = 1; i <= n-2; ++i)
{
int sum = a[i] + a[i+1] + a[i+2];
{
if (sum > max)
{
max = sum;
index = i+1;
}
}
}
cout << max << " " << index << endl;
return 0;
}