题解区公式会炸，请移步讨论区

https://ac.nowcoder.com/discuss/1298659

补丁，放抽楼

#include <bits/stdc++.h>
using namespace std;
const long long INF = 5e18;
int n;
int main()
{
    long long x, y, z;
    cin >> x >> y >> z;
    cout << z<<"