太猛了，剛考完題目就出來了:D，氣死剛剛想好久

下面隨便打的參考參考

#include <bits/stdc++.h>
#define fast_as_a_fuckboy ios_base::sync_with_stdio(0); cin.tie(0);
using namespace std;

int main() {
  fast_as_a_fuckboy
  int n, w1, w2, h1, h2;
  cin >> n >> w1 >> w2 >> h1 >> h2;
  int vol[2], nh[n];
  vol[0] = w1*w1*h1;
  vol[1] = w2*w2*h2;
  int now = 0;
  int v[n];
  for(int i = 0;i < n;i++){
    cin >> v[i];
  }
  for(int i = 0;i < n;i++){
    now += v[i];
    if(vol[0] > now){
      nh[i] = now/w1/w1;
    }
    else if(vol[0] + vol[1] > now){
      nh[i] = (now-vol[0])/w2/w2 + h1;
    }
    else{
      nh[i] = h1+h2;
    }
  }
  int ans = nh[0];
  for(int i = 1;i < n;i++){
    ans = max(ans, nh[i] - nh[i-1]);
  }
  cout << ans;
}