Submission #1051405

#	Time	Username	Problem	Language	Result	Execution time	Memory
1051405		NeroZein	Flooding Wall (BOI24_wall)	C++17	8 / 100	248 ms	456 KiB

Main

#include "bits/stdc++.h"
using namespace std;

#ifdef Nero
#include "Deb.h"
#else
#define debug(...)
#endif

const int md = (int) 1e9 + 7;

void add(int& x, int y) {
  x += y;
  if (x >= md) {
    x -= md; 
  }
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  cin >> n;
  vector<int> a(n); 
  for (int i = 0; i < n; ++i) {
    cin >> a[i];
  }
  vector<int> b(n);
  for (int i = 0; i < n; ++i) {
    cin >> b[i];
  }
  int water = 0; 
  for (int mask = 0; mask < (1 << n); ++mask) {
    vector<int> c(n); 
    for (int i = 0; i < n; ++i) {
      c[i] = (mask >> i & 1 ? b[i] : a[i]); 
    }
    vector<int> d(n); 
    for (int i = 0; i < n; ++i) {
      int mxL = *max_element(c.begin(), c.begin() + i + 1);
      int mxR = *max_element(c.begin() + i, c.end());
      d[i] = min(mxL, mxR);
      add(water, d[i] - c[i]);
    }
  }
  cout << water << '\n';
  return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 17
• Subtask 3: 0 / 19
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 30